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Wyświetlanie 1-35 z 35
Tytuł:
Car assembly management with CAN
Zarządzanie podzespołami pojazdu samochodowego za pomocą sieci CAN
Autorzy:
Śmieja, M.
Powiązania:
https://bibliotekanauki.pl/articles/245577.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
CAN
transmisja
integracja
komunikacja
samochód
transmission
network
integration
communication
car
Opis:
Ongoing scientific developments connected with processing information as well as new methods to find compile and utilize it, has a direct impact on automotives. Such a complex object as a car, in term of the versatility connected with its components and their numerous functions demands the transfer of a vast amount of information. These procedures, which are conducted by the most high profiled producers and their associates in the field of preparing and implementing new standards in network communication , are continually being modified and advanced due to increasing demands for greater efficiency and improved reliability to data transmission. This article will attempt to introduce the CAN network as an element responsible for integrating and coordinating the working process ofsuch as complex system as the modern car. In the first part of this article there is a review of the basic solutions in automotives such as K-Line, LIN, CAN, Flex Ray for the purpose of outlining their ability to fulfill the demands imposed by car users and producers and the limitations that are subsequent to the various realization and their degree of complexity. Following on from this, there is a basic communication description of CAN and some applications of this standard in the modern car. Observations and remarks enclosed in the final part reports on the prognosis concerning the information described in this article with on emphasis on safety and ecology.
Ciągły rozwój nauk związanych z szeroko rozumianym przetwarzaniem informacji oraz nowe możliwości jej pozyskiwania i wykorzystania ,znajdują bezpośrednie odbicie w technice motoryzacyjnej. Złożoność obiektu jakim jest samochód pod względem różnorodności procesów i zjawisk zachodzących w nim począwszy od termodynamiki skończywszy na psychice kierowcy wiąże się nieodłącznie z przesyłaniem dużej ilości informacji. Prowadzone przez czołowych producentów samochodów oraz ich kooperantów prace w zakresie opracowania i wdrożenia nowych standardów komunikacji sieciowej determinowane są coraz wyższymi wymaganiami dotyczącymi wydajności i niezawodności systemów odpowiedzialnych za transmisje danych. W niniejszym artykule podjęto próbę przedstawienia sieci CAN jako elementu integrującego i koordynującego działanie złożonego systemu, jakim jest współczesny pojazd samochodowy. Dokonano przeglądu obecnych w motoryzacji rozwiązań sieciowych takich jak K-Line, LIN, CAN, Flex Ray pod katem ich zdolności do spełnienia narzuconych przez producentów i użytkowników oczekiwań, a także ze względu na ograniczenia natury ekonomicznej oraz technicznej wynikające z rożnego stopnia złożoności poszczególnych realizacji. Przedstawiono podstawowy opis komunikacji w standardzie CAN, oraz aplikacje tego standardu we współczesnych pojazdach samochodowych. Ujęte w podsumowaniu uwagi starają się przedstawić obecne prognozy dotyczące omawianych zagadnień uwzględniając silnie akcentowane w ostatnich latach kwestie bezpieczeństwa i ekologii.
Źródło:
Journal of KONES; 2009, 16, 3; 423-430
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The flexray networks in the modern motorcars
Autorzy:
Śmieja, M.
Powiązania:
https://bibliotekanauki.pl/articles/247452.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
FlexRay
car networks
data exchange
engine operation
motorcars
Opis:
Advancing the evolution of motor cars, understood as complex mechatronic systems are connected with the ever emerging constrains on coordination between the components of the system objects. Adopted by all environment related to the automotive, the way of communication between the vehicle components via network for data exchange, connected with the necessity to keep up with increasing demands on the transmission speed and level of security. The answers to these requirements concerning the ways to control x-by-wire or complex mechanism to optimize the operation of the engine, seems to have been created by the big automobile companies FlexRay protocol. The article presents the basie features of this method of communication that allows for a 10 fold increase in data rates compared to the conventional CAN network. The remaining features of transmission such as reliability and level of time determinism, which are important for control systems are discussed later in the paper. Included in the summary comments indicate potential further developments and the possibilities of the application if this method of transmission in automotive applications.
Źródło:
Journal of KONES; 2010, 17, 3; 431-435
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
ZigBee phase shift measurement approach to mobile inspection robot indoor positioning techniques
Wykorzystanie pomiaru przesunięcia fazowego w transmisji ZigBee do pozycjonowania mobilnych robotów inspekcyjnych
Autorzy:
Śmieja, M.
Powiązania:
https://bibliotekanauki.pl/articles/327998.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
indoor positioning
phase shift measurement
ZigBee
pozycjonowanie w przestrzeniach zamkniętych
przesunięcie fazowe
Opis:
This paper presents the new approach to ZigBee ranging against the background of currently using techniques. This new approach involves a phase shift measurement instead of standard time of arrival or radio signal strength approaches. The ZigBee device used in this study and preliminary tests of ranging and positioning performed using phase shift measurements are presented. The positioning results encourages for further research on the performance verification and algorithms for processing of ranging results.
W artykule przedstawiono zmodyfikowane w stosunku do najczęściej obecnie stosowanych podejście do określania położenia obiektów wykorzystujące propagacje sygnały w protokole ZigBee. Typowe rozwiązania stosowane aktualnie w systemach lokalizacji opartych o bezprzewodowe sieci wymiany danych bazują na pomiarach czasu propagacji lub mocy sygnału. Opisane w artykule podejście odwołuje się do pomiaru przesunięcia fazowego sygnału wynikającego z wykorzystania do transmisji różnych częstotliwości. Przedstawione w artykule wstępne wyniki eksperymentów uzasadniają dalsze prace nad wykorzystaniem przedstawionej metody w zakresie opracowania algorytmów obliczeniowych pozycjonowania oraz weryfikacji efektów w warunkach rzeczywistych.
Źródło:
Diagnostyka; 2018, 19, 3; 101-107
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sterowanie układem zasilania silnika o zapłonie samoczynnym w środowisku rapid-prototyping z wykorzystaniem LabView
Controlling the fuel feeding system in a self-ignition engine under fast-prototyping conditions using LabView
Autorzy:
Wierzbicki, S.
Śmieja, M.
Powiązania:
https://bibliotekanauki.pl/articles/156563.pdf
Data publikacji:
2014
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
silnik spalinowy o zapłonie samoczynnym
układ zasilania
sterownik
LabView
compression ignition engine
fueling system
controller
LabVIEW
Opis:
Układ sterujący zasilaniem to najistotniejszy element silnika spalinowego decydujący o jego osiągach. W artykule opisano budowę laboratoryjnego układu sterowania zasilaniem silnika z wykorzystaniem narzędzi naukowo-inżynierskich. Opracowany układ oparto na oprogramowaniu LabView i sterowniku rodziny CRio wykorzystujący układy FPGA i mikrokontroler rodziny PowerPc. Zawarte w artykule przykładowe wyniki sterowania potwierdzają skuteczność prezentowanego podejścia do projektowania tego typu stanowisk.
Modern control systems for fuel feeding to self-ignition engines are complex, both in terms of their structure and software. Their complexity virtually prevents their use for controlling engines at test stands, where the major expected features include easy access and control of selected engine parameters. Therefore, in order to study such objects, it is necessary to develop control systems adapted to specific needs [4, 9]. In order to ensure proper operation of an engine and to reproduce the actual conditions of its operation, it is necessary to control its input parameters precisely as well as ensure the complex series of impulses which control fuel injections (Fig. 6). This paper describes the structure of a LabView-based Common Rail-type laboratory controller of a feeding system. The controller was developed based on a CompactRio programmable controller using FPGA systems and PowerPC family microcontrollers, with real-time operation capability. A Driven DI card was used as an injection control output module, which is a card dedicated for controlling this type of elements. The parameters of a PID regulator, which controls the pressure regulation valve, were also selected to ensure that the set fuel pressure is maintained regardless of the operating conditions. The structure of the controller developed in the study is open, which enables its use in different kinds of research and its expansion by additional control systems, as well as recording the operation parameters.
Źródło:
Pomiary Automatyka Kontrola; 2014, R. 60, nr 11, 11; 1049-1052
0032-4140
Pojawia się w:
Pomiary Automatyka Kontrola
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The concept of an integrated laboratory control system for a dual - fuel diesel engine
Autorzy:
Śmieja, M.
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/246809.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
biogas
diesel engine
dual-fuel feed system
microprocessor engine control system
Opis:
The need to limit greenhouse gases emissions and to increase the share of renewable fuels in the general energy balance forces people to look for new alternative energy sources. Methane or biogas, in which methane is the main combustible component, is one of such fuels, which is believed to be a promising diesel engine fuel. It is worth emphasizing that biogas might be believed to be one of the cleanest fuels due to the fact that it can be produced from waste, which in normal conditions decomposes releasing methane into the atmosphere. Methane (biogas) combustion in diesel engines requires a dual-fuel feed system, in which the liquid fuel initiating auto-ignition will be injected into the combustion chamber. It comes as a consequence of a relatively high spontaneous combustion temperature of methane, which is not able to self-ignite in the chamber without an external source of ignition. This article presents a concept of constructing an integrated laboratory control system, which will provide optimal feed control of complex composition gaseous fuel and of the injection of an appropriate pilot dose of a liquid fuel into the combustion chamber. The solution proposed to control a dual-fuel diesel engine, which was mounted on the test bed, enables performing comprehensive diesel engine research, ensuring not only stable working conditions for the engine, but also granting an opportunity to smoothly regulate the composition of the artificial biogas which feeds the engine and to control basic parameters of the liquid fuel pilot dose.
Źródło:
Journal of KONES; 2012, 19, 3; 451-458
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Pseudolite augmented navigation for automotive application
Autorzy:
Rapiński, J.
Śmieja, M.
Powiązania:
https://bibliotekanauki.pl/articles/247112.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
OBD
GNSS
pseudolite
navigation
road safety
road telematics
Opis:
This paper presents the idea of the Local Area Navigation Systems (LANS) for automotive application in combination with standard GNSS navigation systems. The navigation system is based on four components: the widely available GPS, pseudolites located in areas where GPS signal is obstructed (tunnels, parking lots, city canyons), GPRS communication and supervisory informatics system. In this kind of system, reliable positioning is crucial. This article covers basic aspects of GPS single point positioning commonly used in navigation applications. Some information about differential positioning (DGPS/RTK) is also provided. A strong pressure is put on the application of pseudolite, its design and possible usability. This article presents authors own pseudolite design and the idea of pseudolite application to increase road safety in areas where standard GNSS signals are not available. The pseudolite presented in this paper is in the stage of development and testing. It is a device designed at the University of Warmia and Mazury in Olsztyn in cooperation with Canadian Center for Geodetic Engineering, University of New Brunswick, Canada. Different approach to the navigation in harsh environment is to move the source of the navigation outside of the vehicle and place it inside of the obstructions. It is much more efficient way to use in vehicles standard GPS receivers augmented with signals from the pseudolites, when the satellite signals are unavailable.
Źródło:
Journal of KONES; 2011, 18, 4; 405-411
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Information systems safety in a context of autmotive applications
Autorzy:
Śmieja, M.
Rygiewicz, A.
Powiązania:
https://bibliotekanauki.pl/articles/243016.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
data safety
motion sensor
system of digital tachograph
Opis:
Strong expansion of IT tools in area of management and control of systems and devices of road transport is connected inseparably with a need of assurance of proper level of credibility and data safety. In paper one related to issues connected with threatens and ways of their reduction in a context of selected law regulation and analysis obtained during studies on modern motion sensor applied in system of digital tachograph in vehicles from delivery trucks and buses group. Departures from assumed scheme of information flow in vehicle can result from random interfering environmental factors as well as , action taken deliberately for specific purpose, as change of object's operation (e.g. tuning of power transmission system), or illicit modification of data subjected to revision by institutions obligated to control of vehicle. Presented in the paper example of threads and methods of information protection are part of the whole system of defined threats and securities necessary to obtain applied certificates granted by selected institutions such as BSI (Bundesamt für Sicherheit in der Informationstechnik) and development of so called PPprotection profile. In summary there are also pointed another ways to enhance a security level of described system such as e.g. redundancy in acquiring and transmission of data.
Źródło:
Journal of KONES; 2012, 19, 4; 565-570
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prospects for the development of automotive networks based on ethernet
Autorzy:
Śmieja, M.
Rapiński, J.
Powiązania:
https://bibliotekanauki.pl/articles/245983.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
Ethernet ABV
TTEthernet
automotive networks
Opis:
The increasing complexity of automotive electronic systems is linked to the continuous development of new or adaptation of those already proven has been efficient in other fields of information management. Contemporary vehicles are characterized by great diversity of data exchange used in them ways. Communication protocols proposed and used by car manufacturers, such as the K-line, Can, Lin, and FlexRay have been changing their position as a part of formally adopted group of standards. The article is an attempt to outline the evolution and prospects of implementation of automotive networks, taking into account current technological capabilities as well as the requirements and expectations of potential users. The advantages of Ethernet are proved by the fact, that many of the leading automation companies which developed and popularized the standards of their own network such as Profibus (Siemens), Cc-link (Mitsubishi), Modbus (Modicon/Shneider) for years, move to Ethernet protocols, which is solutions based on the OSI layer 2 -respectively Profinet, CC-Link IE, Modbus TCP. It is a significant difference between industrial and automotive network applications is the difference in desired behaviour of controlled object. In most of the cases in the industrial systems, a proper reaction in critical situations should be to stop the activity of particular elements of controlled plant.
Źródło:
Journal of KONES; 2011, 18, 3; 445-452
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The use of can in automation test bench to test the engine cooling system
Autorzy:
Kneba, Z.
Śmieja, M.
Powiązania:
https://bibliotekanauki.pl/articles/243994.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
CAN networks
car networks
data exchange
cooling system
engine operation
Opis:
Can is widely distributed network in the industry and automotive applications with high availability enable its electronic components and the easy integration projects with software engineering research Matlab type, tends to encourage the use of these precious features of CAN to build research stands. The article presents a data transmission system using the CAN protocol as a test of a new generation of cooling systems for internal combustion engines. Adopted for the object of research methodology which involves the simulation of variable parameters of the different control strategies require data processing in real time. A large number of recorded and interpreted online information about the temperatures in many parts of the facility and other variables such as instantaneous fuel consumption, secreted mechanical power, crankshaft and throttle position together with the need to control the plant justify departure from the traditional methods of transmitting signals in separate lines , for the application data exchange network, adopted by the authors as a way of organizing the flow of data based on the CAN protocol using the Matlab Simulink Real Time. The article contains a description of the implementation of networks in the context of very specific features for Controller Area Network particularly regarding mechanisms such as arbitration on the bus, the method of initiation and the provision of sufficient transmission capacity. The presented graphs and diagrams illustrate the proposed and implemented solutions and the results obtained from stucties measuring temperatures for the warm-up and cooling of the engine.
Źródło:
Journal of KONES; 2010, 17, 3; 205-210
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Data exchange in a tachograph system as the element of the cybersecurity of the modern car
Autorzy:
Śmieja, M.
Rychter, M.
Sułek, P.
Powiązania:
https://bibliotekanauki.pl/articles/243811.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
tachograph
motion sensor
cybersecurity
sensor pairing
encryption data
Opis:
A numerous flows of data in the modern vehicle are necessary to maintain the complexity of systems included on-board. Unfortunately, along with the increase of the road security and many useful facilities there are arising vulnerabilities coming from cyberattacks and reliability of the communication systems. Because many components are based on highly advanced E/E technology, the security measures known from IT are more and more important. The data encryption mechanisms, used in IT for memory content and data transfer protection, are getting important in automotive. In the paper there are presented considerations connected with the cybersecurity of the vehicle, as a part of the transportation system, as well as the effect of the process of the production. In the article authors focused on the encryption of the communication between the tachograph device and the motion sensor. The normal operation of the interface tachograph-sensor follows the operation of pairing based on authentication and identification services. The pairing operation takes place in an authorized workshop and its goal is to check the legality of devices paired, and the so-called establishment of the session key, which contains encryption keys used for 3DES encryption. The description of data encryption for the motion sensor, presented in the article, is the example of the bunch of solutions required for the modern vehicle.
Źródło:
Journal of KONES; 2016, 23, 4; 535-540
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of CO2 content in CNG on the combustion process in a dual-fuel compression ignition engine
Wpływ zawartości CO2 w CNG na przebieg spalania w dwupaliwowym silniku o zapłonie samoczynnym
Autorzy:
Wierzbicki, S.
Mikulski, M.
Śmieja, M.
Powiązania:
https://bibliotekanauki.pl/articles/133672.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
dual-fuel compression ignition engine
carbon dioxide
combustion process
emission of toxic compounds
dwupaliwowy silnik o ZS
CNG
dwutlenek węgla
proces spalania
emisja związków toksycznych
Opis:
Seeking alternative sources of energy for its more effective use, reducing emissions of toxic pollutants to the atmosphere and counteracting global warming are nowadays the major areas of development in the power industry, including the design of combustion engines. Currently, the research into the use of new fuels, which may be effective sources of energy, is performed by many scientific centres. The use of biogas for production of energy in cogeneration systems is one of the ways for improvement of energy balance. In the research described herein, a dual-fuel compression ignition engine was fuelled with gaseous fuel with variable CNG and CO2 ratios. The tests were performed for engine fuelling controlled by both an original controller with the software optimised for single-fuel operation and for the injection of a pilot dose of diesel controlled by a dedicated controller enabling the adjustment and control of the injection and dose parameters. This paper presents the effect of carbon dioxide content in gaseous fuel on the combustion process and emission of toxic compounds in the engine examined.
Poszukiwanie alternatywnych źródeł energii, zwiększenie efektywności jej wykorzystania, a także zmniejszenie emisji związków toksycznych do atmosfery i walka z globalnym ociepleniem są głównymi współczesnymi kierunkami rozwoju przemysłu energetycznego, w tym również silników spalinowych. Obecnie w wielu ośrodkach naukowych prowadzone są badania nad wykorzystaniem nowych paliw, które mogą być efektywnym źródłem energii. Jednym ze sposobów poprawy bilansu energetycznego jest wykorzystanie biogazu do wytwarzania energii w układach kogeneracyjnych. W opisanych w artykule badaniach dwupaliwowy silnik o zapłonie samoczynnym zasilany był paliwem gazowym o zmiennych proporcjach CNG i dwutlenku węgla. Badania przeprowadzono przy sterowaniu zasilaniem silnika zarówno przez oryginalny sterownik oprogramowany do pracy jednopaliwowej, jak i przy sterowaniu wtryskiem dawki pilotującej oleju napędowego przez dedykowany sterownik umożliwiający regulację i kontrolę parametrów wtrysku tej dawki. W artykule przedstawiono wpływ zawartości dwutlenku węgla w paliwie gazowym na przebieg procesu spalania oraz emisję związków toksycznych badanego silnika.
Źródło:
Combustion Engines; 2015, 54, 3; 91-101
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
LoRaWAN networks in automotive applications
Autorzy:
Śmieja, M.
Duda, K.
Mamala, J.
Powiązania:
https://bibliotekanauki.pl/articles/243751.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
automotive
communication networks
car parameter monitoring
CAN
modular system
Opis:
Development of IoT is tightly coupled with the use of the wireless communication solutions. Nowadays there are several standard wireless protocols, which are responsible for carrying information. The increase of the communication traffic tends to specialize the kind of used data interchange methods for the sake of demanded size of data packet, frequency of connections, meaning of the data, security and safety of the transmission as well as many others. One of the intensively spreading wireless networks is LoRaWAN. Because of its low energy consumption, long distance range, and high flexibility, it seems to be very effective solution to apply in the field of road traffic. The article presented the base features of LoRaWAN as well as the conception of virtual local traffic system based on the data yield from the board systems of cars. Accessed from OBD information about f. e.g. temporary cars speed or accelerations associated with their current position can be significant factor in creating the real image of the traffic situation.
Źródło:
Journal of KONES; 2018, 25, 3; 431-435
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Preliminary tests on an integrated laboratory control system for the feeding system of a dual - fuel diesel engine and its load
Autorzy:
Wierzbicki, S.
Śmieja, M.
Piętak, A.
Powiązania:
https://bibliotekanauki.pl/articles/244419.pdf
Data publikacji:
2013
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
CI engine
engine test bed
CR system
control system
combustion engine tests
Opis:
Comprehensive testing of diesel engines currently requires not only a control system for the feeding system of the engine, but also a system ensuring precise control of its load and providing constant measurement conditions. Additionally, it is necessary during the tests to record a considerable number of operating parameters of both the engine and the loading system. The currently available stands for diesel engine tests, the so-called “engine test beds”, are standardly-equipped with special systems controlled using computer applications to ensure the maintenance of the assumed engine operation parameters. For compression-ignition engines, this most often takes place by control of the accelerator pedal position. In this solution, the engine is controlled by the engine controller, which controls the fuel charge based on the measurement of the rotational speed and the accelerator pedal position depending on the assumed control algorithm. The shortcoming of this solution is no possibility of controlling selected fuel feeding parameters, such as fuel pressure or the injection advance angle. This paper presents preliminary tests on an integrated control system for both engine load and the parameters of fuel fed to a compression-ignition engine. The developed control system enables engine test bed control, which, depending on the measurement variant, ensures the maintenance of a constant rotational speed or a constant engine load as well as control of the Common Rail system actuators.
Źródło:
Journal of KONES; 2013, 20, 2; 393-399
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie protokołu Ethernet do komunikacji w systemach diagnostyki pokładowej pojazdów
Application of Ethernet protocol for communication in onboard diagnostic systems
Autorzy:
Śmieja, M.
Wierzbicki, S.
Mamala, J.
Powiązania:
https://bibliotekanauki.pl/articles/132900.pdf
Data publikacji:
2015
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
OBD
Ethernet
DoIP
CAN-FD
diagnostyka pokładowa
vehicle diagnostics
Opis:
System diagnostyczny jest źródłem informacji o stanie pojazdu w postaci symptomów diagnostycznych w formie danych pozyskiwanych wprost z sensorów, przetworzonych informacji diagnostycznych lub gotowych decyzji wpływających na funkcjonowanie diagnozowanego obiektu. Mając na względzie znaczenie tych informacji dla bezpiecznej i efektywnej eksploatacji pojazdu na obsługujące je systemy komunikacji nakłada się określone wymagania dotyczące wiarygodności i przepustowości informacyjnej. Klasycznym obecnie protokołem wymiany danych w zakresie diagnostyki OBD jest sieć CAN. Wzrastająca złożoność układów napędowych pod względem ich sterowania oraz ewolucji w stronę systemów hybrydowych czy wykorzystania alternatywnych źródeł zasilania wiąże się z potrzebą zwiększenia przepustowości sieci pokładowych obsługujących te obiekty od strony systemów diagnostycznych. Jednym z najbardziej realnych scenariuszy zastąpienia CAN w systemach diagnostyki pokładowej wydaje się być zastosowanie szeroko wykorzystywanego w wielu poza motoryzacyjnych obszarach protokołu Ethernet. Liczne doświadczenia z Ethernet 802.3 znajdują swe odbicie w podejmowanych przez środowiska inżynierskie działaniach w kierunku aplikacji tego protokołu w systemach OBD.
Diagnostic system is a source of informations about the state of a vehicle. The diagnostic symptoms are in the form of raw sensor data, processed diagnostic informations or decisions inflicting object being diagnosed. Taking into account the meaning of this informations for safe and efficient use of a vehicle, the requirements for the reliability and information capacity are put on the systems that support them. A standard protocol for data exchange in the area of OBD diagnostics is CAN. Increasing complexity of drive systems control and their evolution towards hybrid systems or alternate power sources envolves the increase of the onboard network transfer rate (which supports this objects diagnostics). One of the most plausible scenarios is replacing the CAN in onboard diagnostics is the application of widely used in other areas Ethernet protocol. Numerous experiences (performed by various engineers) with Ethernet 802.3 founds its reflection in application of this protocol in OBD systems.
Źródło:
Combustion Engines; 2015, 54, 3; 982-987
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sterowanie dawką wtryskiwanego paliwa w układzie common rail z wykorzystaniem środowiska LabView
Control of the injected fuel charge in the common rail system using the LabVIEW environment
Autorzy:
Śmieja, M.
Wierzbicki, S.
Mamala, J.
Powiązania:
https://bibliotekanauki.pl/articles/134086.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
common rail
elektromagnetyczny wtryskiwacz paliwa CR
impuls sterujący wtryskiwaczem
wartość dawki wtryskiwanego paliwa
CR electromagnetic fuel injector
injector control pulse
value of the injected fuel charge
Opis:
Obecnie system common rail stał się powszechnie wykorzystywanym układem zasilania w paliwo silników o zapłonie samoczynnym. W tym układzie, wielkość wtryskiwanej dawki paliwa jest ściśle uzależniona od przebiegu parametrów impulsu elektrycznego wysłanego przez końcówkę mocy układu zasilania wtryskiwacza paliwem z sterownika silnika. Konstruując, zatem własny sterownik do tego typu układów niezwykle ważny jest właściwy dobór parametrów przebiegu impulsu gwarantującego precyzyjny wtrysk paliwa. W artykule przestawione wyniki badań eksperymentalnych elektromagnetycznych wtryskiwaczy układu common rail, sterowanych za pomocą dedykowanej karty Drivven, współpracującej z programowalnym sterownikiem CompactRIO firmy National Instruments. Opisane w artykule wyniki badań przedstawiają wpływ podstawowych parametrów impulsu elektrycznego otwierającego wtryskiwacz elektromagnetyczny na wartość dawki wtryskiwanego paliwa.
The common rail system has currently become a commonly used fuel feed system for compression ignition engines. In this system, the amount of the injected fuel charge closely depends on the course of the parameters of the electrical pulse sent by the power output unit of the system for injector fuel feed from the engine controller. Therefore, when designing your own controller for this type of system, it is extremely important to properly select the parameters of the course of the pulse guaranteeing precise fuel injection. The article presents the results of experimental tests for common rail electromagnetic injectors, controlled with a dedicated Drivven card, cooperating with a National Instruments CompactRIO programmable controller. The test results described in the article present the effect of the basic parameters of the electrical pulse opening the electromagnetic injector on the value of the injected fuel charge.
Źródło:
Combustion Engines; 2013, 52, 3; 542-548
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The impact of the share of CNG on the combustion process in a dual-fuel compression-ignition engine with the common rail system
Autorzy:
Wierzbicki, S.
Śmieja, M.
Mikulski, M.
Powiązania:
https://bibliotekanauki.pl/articles/242699.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
natural gas
dual-fuel compression-ignition engine
Common Rail system
combustion process
Opis:
The struggle against global warming necessitates the search for new sources of energy, which limit the emission of carbon dioxide into the atmosphere. Among various fuels used to supply energy nowadays, the importance of natural gas is constantly growing. This is caused by the fact that this fuel is characterised by the lowest share of coal among all fossil fuels. Because of its properties, natural gas can be used directly to power spark-ignition engines. The use of this fuel for compression-ignition engines on the other hand is limited due to the high autoignition temperature of methane. Currently, research is being conducted in numerous centres on the possibility of using fuel gases to power CI engines operating in a dual-fuel system. The present article discusses the impact of the share of CNG in the supply dose on the operation of a CI engine. An engine with the Common Rail injection system programmed for mono-fuel operation was used in the research. Based on the conducted tests it has been proved that supplying this type of engine with fuel gas considerably changes the course of the combustion process, which is caused by the fact that the gas and air mixture present in the combustion chamber starts burning now of the autoignition of the first portion of liquid fuel. The obtained test results confirm the necessity to change the injection parameters of the pilot dose of diesel fuel (the timing angle of injection and the pressure of fuel) in cases when this type of engine operates in a dual-fuel system.
Źródło:
Journal of KONES; 2016, 23, 2; 415-422
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The correctness function of intelligent device recording in aspect used and their safety
Autorzy:
Rychter, M.
Sułek, P.
Śmieja, M.
Powiązania:
https://bibliotekanauki.pl/articles/244271.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
transport road
card driver
digital recorder
manipulations digital reco
Opis:
The duty of applying recorders in the road transport was implemented in states of the European Union on regulations (EWG) no. 3820 / 85 on harmonisations of some social welfare legislation referring to the transport, which was changing with regulation (EWG) no. 3821 / 85 on recorders applied in the road transport. The preamble unequivocally that in order to ensure effective control of the recording devices used in road transport, they must be reliable, easy to use and constructed to minimize any possibility of fraud. The duty of implementation of the digital tachograph is also considered in the context of improving road safety. Through the analysis of the records of the registering devices can be defined in each specific case of speeding by more than the allowable value in the area. Technical requirements for your device recorded in the resolution, which defines the main parameters, are measured, among things other, the traversed path length of the car, speed, time driving, other periods of work, politeness of the driver and the correct operation of the check authorized for those authorities. The duty of States-members of the European Union is identify organizations that will conduct research and verification of the recording equipment together will also introduce solutions that improve their security. This article contains responsibilities after part rest on the drivers of vehicles takes the issues of system security and optimum performance of recording devices and consequences may arise from non-compliance with regulations and them subjecting to tachograph manipulation.
Źródło:
Journal of KONES; 2016, 23, 3; 419-426
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The new data exchange facilities with CAN-FD
Autorzy:
Śmieja, M.
Duda, K.
Mamala, J.
Powiązania:
https://bibliotekanauki.pl/articles/247556.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
automotive
communication networks
CAN
CAN-FD
transmission bandwidth
Opis:
The modern vehicles demand more and more data exchange to coordinate, control and monitor functions of on board system. The variety of networks applied in these systems is featured mainly by the bandwidth and time determinism. The development electronic information and network sciences find its reflection in the new and new automotive implementations. The last significant step towards the increase the throughout put of the on board network channels are works on CAN-FD. CAN is now the most common network present on board. It helps to manage the maintenance with the numerous subassemblies of the modern car. Next to the many features making CAN so useful and popular, there is a bandwidth limitation, which slows down further implementation of it. The new CAN-FD specification adds new properties that extend the possibilities of CAN as automotive network protocol. These are: different speed transmission in the arbitration phase and in the data phase during the message transmission as well as the extending the maximum size of data filed of the frame from 8 (CAN) to 64 (CAN-FD). In the paper there have been presented the limitations of existing CAN protocol usage, the explanation of the basics of the arbitration mechanisms and the response of the scientist and engineers to cope with it, as well as the formal result outlined in the CAN-FD specification.
Źródło:
Journal of KONES; 2016, 23, 4; 527-533
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CAN network in real time on board systems
Autorzy:
Śmieja, M.
Wierzbicki, S.
Mamala, J.
Powiązania:
https://bibliotekanauki.pl/articles/133069.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
controller area network
CAN
tan triggered CAN
TTCAN
real time architecture
tachograph
time triggered networks
automotive networks
obszar pod kontrolą sieci
tachograf
sieci motoryzacyjne
Opis:
The network system of data exchange between the various components is an inherent element of every car. Because of the specific and different requirements for data transfer between specific devices, currently used communication protocols have different properties of performance, security, and degree of determinism. The paper presents the increasing complexity of the data exchange system based on the example of the latest requirements for digital tachographs. The article describes also the data transmission initialization methods in the context of network data exchange organization. The hybrid use of time triggering and event triggering mechanisms has been presented in relation to the operation of the CAN network under increased real-time conditions requirements implemented as TTCAN (time triggered CAN).
Źródło:
Combustion Engines; 2017, 56, 4; 211-214
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Zintegrowane sterowanie stanowiskiem badawczym silników o ZS w środowisku fast prototyping
Integrated control of a test stand for compression ignition engines in a fast prototyping environment
Autorzy:
Wierzbicki, S.
Śmieja, M.
Grzeszczyk, R.
Powiązania:
https://bibliotekanauki.pl/articles/133083.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
sterowanie silnikiem o zapłonie samoczynnym
hamownia silnikowa
sieć CAN
LabVIEW
compression ignition engine control
engine test bed
CAN network
Opis:
Prawidłowe prowadzenie badań silników spalinowych wymaga zapewnienia i utrzymywania stałych zadanych wartości obciążeń. W przypadku badań laboratoryjnych najlepszym rozwiązaniem jest wykorzystanie hamowni silnikowych. Współcześnie stosowane rozwiązania hamowni dzięki użyciu sterowanych mikroprocesorowo układów zapewniają automatyczne precyzyjne sterowanie i kontrolę poszczególnych parametrów hamulca. W niniejszym artykule przedstawiono zbudowany w oparciu o środowisko programistyczne LabView układ umożliwiający zintegrowanie układu sterowania hamownią silnikową z układem sterowania zasilaniem silnika.
Proper performance of combustion engine tests requires ensuring and maintaining fixed set load values. For laboratory tests, the best solution is the use of engine test beds. Currently applied test bed solutions ensure automatic precise control and monitoring of individual brake parameters due to the use of microprocessor controlled systems. This article presents a system built on the basis of the LabVIEW programming environment enabling the integration of the engine test bed control system with the engine fuel feed control system.
Źródło:
Combustion Engines; 2013, 52, 3; 536-541
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostyka maszyn tłokowych w energetyce
Diagnosis in the power piston machines
Autorzy:
Kneba, Z.
Fabjanowicz, R.
Śmieja, M.
Ziółkowski, M.
Powiązania:
https://bibliotekanauki.pl/articles/133619.pdf
Data publikacji:
2013
Wydawca:
Polskie Towarzystwo Naukowe Silników Spalinowych
Tematy:
diagnostyka silników
diagnostyka sprężarek tłokowych
indykowanie
sprężarka tłokowa
engine diagnostics
diagnostics of reciprocating compressors
indication
Opis:
W artykule przedstawiono obecne techniki monitorowania pracy silników i sprężarek dużej mocy. Ze względu na znaczne koszty ewentualnego wyłączenia z ruchu tego typu maszyn są one poddane obserwacji dla przewidywania ewentualnych awarii oraz planowych zatrzymań. Rośnie liczba zaawansowanych systemów pomiarowych z indykowaniem cylindrów. Dawne metody wibroakustyczne zastępowane są pomiarami parametrów procesu termodynamicznego.
This paper presents current techniques for monitoring the performance of engines and compressors power. Due to the significant costs of a possible exemption from the movement of this type of machine they are subjected to observation to predict possible failures and scheduled stops. There is a growing number of advanced metering systems with indykowaniem cylinders. The old methods are replaced vibroacoustic measurements of thermodynamic parameters of the process.
Źródło:
Combustion Engines; 2013, 52, 3; 297-301
2300-9896
2658-1442
Pojawia się w:
Combustion Engines
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wykorzystanie sieci komunikacyjnych w aspekcie rozwoju systemów diagnostycznych pojazdów mechanicznych
Application of communication nets in aspect of development of modern systems of car diagnostics
Autorzy:
Śmieja, M.
Piętak, A.
Imiołek, M.
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/208645.pdf
Data publikacji:
2011
Wydawca:
Wojskowa Akademia Techniczna im. Jarosława Dąbrowskiego
Tematy:
sieci wymiany danych
CAN
OBD
diagnostyka
network area
diagnostics
Opis:
Rozwój konstrukcji pojazdów samochodowych podyktowany wzrastającymi wymaganiami w stosunku do emisji związków toksycznych oraz poprawy bezpieczeństwa oznacza coraz większą złożoność układów odpowiedzialnych za sterowanie i diagnostykę. Przepływ dużych ilości danych pomiędzy poszczególnymi elementami tych systemów wymusza stosowanie sieci o coraz większej przepustowości i niezawodności. Różnorodny charakter przesyłanych informacji wiąże się z koniecznością dostosowania sposobu transmisji do konkretnych zastosowań. Najistotniejsze właściwości wykorzystywanych protokołów sieciowych, takie jak maksymalne szybkości transmisji, sposób jej inicjacji czy stopień determinizmu czasowego, decydują m.in. o ich przydatności dla efektywnej diagnostyki. Przyjęcie międzynarodowych regulacji prawnych obowiązujących producentów pojazdów takich jak OBD II w zakresie bieżącej i okresowej kontroli stanu technicznego pojazdów obejmuje wymagania i standardy dotyczące przesyłania informacji diagnostycznej. Konsekwencją ciągłego rozwoju motoryzacji są również działania w kierunku traktowania samochodu jako elementu większej struktury niezawodnościowej, możliwej do osiągnięcia dzięki coraz dostępniejszym metodom komunikacji między pojazdem a jego otoczeniem.
The development of modern cars is caused by the ever increasing demand to reduce toxic emission as well as to improve safety. This means that the systems responsible for diagnostics and controlling are becoming more and more complex. The flow of huge amounts of data between particular elements of these systems forces application of nets with greater capacity and increased reliability. Heterogeneous character of carried information is connected with the necessity to fit a type of transmission for a specific use. The most significant features of the used net protocols such as maximum speed, the way of triggering and the degree of time determinism, are the factors which decide about their helpfulness for effective diagnostics. Adoption of international regulations, obligatory for manufactures of cars such as OBDII ones, in the field of current and periodical checks on the technical state of cars, include demands and standards concerning the carrying of diagnostic information. The subsequent effect of such continual developments in motorisation is activity connected with treating a car as an element of a much wider reliability structure. This is possible to achieve thanks to more and more common methods of communication between a car and its environment.
Źródło:
Biuletyn Wojskowej Akademii Technicznej; 2011, 60, 1; 231-241
1234-5865
Pojawia się w:
Biuletyn Wojskowej Akademii Technicznej
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Choice of a pilot dose in dual fuel self-ignition engine of a generator, depending on its load
Autorzy:
Imiołek, M.
Piętak, A.
Śmieja, M.
Wierzbicki, S.
Powiązania:
https://bibliotekanauki.pl/articles/247241.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
combustion engine
gas engine
dual fuel powering
CNG
Opis:
One of the basic problems concerning dual fuel powering of self-ignition engines is to determine the minimal dose of diesel oil injected into the combustion chamber in order to trigger self-ignition. Most research conducted to date on double-fuel powering self-ignition has been carried out on engines with mechanical injection systems, which does not ensure the possibility of obtaining very small diesel oil doses initiating self-ignition. The original system of fuelling the engine with diesel oil was replaced with a laboratory Common Rail system. The basic parameters of injector operation were controlled by a specially-developed system ensuring continuous choice of parameters of injector operation. The examined engine was fitted with a prototypical system of methane-air fuelling and a system for controlling and adjusting the supplied dose of methane This study presents the results of research aiming at determining the pilot dose injected into the combustion chamber of the engine to ensure the course of combustion in the engine operating under various loads. The results presented in the paper concern tests of a single-cylinder self-ignition engine, HATZ 1B40, operating in a generator adopted for CNG fuelling.
Źródło:
Journal of KONES; 2011, 18, 4; 129-136
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Effect of pilot charge size and biogas composition on the operating efficiency of a dual-fuel compression-ignition engine
Autorzy:
Wierzbicki, S.
Śmieja, M.
Mikulski, M.
Piętak, A.
Powiązania:
https://bibliotekanauki.pl/articles/243597.pdf
Data publikacji:
2014
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
CI engine
biogas
dual-fuel engine
pilot dose
efficiency of engine
Opis:
Reduction of greenhouse gases emissions into the atmosphere, as well as increasing the share of renewables in the overall energy balance, forces the search for new, alternative energy sources. One of the fuels, which presents high potential for combustion engines are biomethane or biogas, with methane as the main flammable component. Biogas can be obtained from different products and using a variety of technologies which results in its wide availability and relatively easy manufacture. The largest sources of biogas can be animal farms or sewage treatment plants and waste dumps in which significant quantities of biogas are obtained as a result of naturally occurring processes. Biogas can also be obtained from processing of energy crops or waste processing in agricultural, food and meat processing plants. In this article, the possibility of using biogas as a fuel for CI engines has been examined. In such engine, combustion of biogas (methane) requires the use of dual fuel supply system, in which in addition to methane, liquid fuel is injected into the combustion chamber, in order to initiate the self-ignition of gaseous fuel. The paper presents exemplary results of the impact of the proportion of different fuels and biogas composition on the efficiency of the engine work cycle.
Źródło:
Journal of KONES; 2014, 21, 3; 279-284
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The conception of modular monitor of car exploitation parameters
Autorzy:
Śmieja, M.
Ziejewski, K.
Wierzbicki, S.
Mamala, J.
Powiązania:
https://bibliotekanauki.pl/articles/247378.pdf
Data publikacji:
2017
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
automotive
communication networks
car parameter monitoring
CAN
modular system
Opis:
Current tendencies in electronics and informatics development going towards Internet of Things (IoT), Big Data or Data Cloud technologies create new possibilities in acquiring and utilizing data. The article presents the concept of modular monitoring of vehicles operating parameters. Presented device registers data from the OBD system and a set of independent, configurable sensor modules. Data from the OBD system is acquired via protocol. CAN Bus with a DLC connector. The signal from sensor modules is transferred via a Bluetooth wireless network. The registered data can be storage on board as CD card memory or alternatively on a typical user interface such as laptop, tablet, cell phone etc. The communication with the user interface is realised with USB. Moving vehicles modular monitoring system presented in the article can be used to attain a fuller representation of the vehicles state in relation to its environment. The base assumption of the device is maximal flexibility in term of sensors versality as well as possibilities of assembly on board. In connection with the concept, a prototype of the device was made and tested with an inertial measurement unit (IMU) module and a pressure sensor. Appliances modules are based on Cortex M4 and M0 processing units. A users interface in LabVIEW and examples of registered signals are showed at the end of the article.
Źródło:
Journal of KONES; 2017, 24, 4; 321-326
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Prototyp stacji pogodowej dla potrzeb leśnictwa - badania pilotażowe
Prototype of the weather station for the needs of forestry - a pilot study
Autorzy:
Szymański, P.
Szymański, M.
Śmieja, M.
Brach, M.
Ożga, W.
Powiązania:
https://bibliotekanauki.pl/articles/989036.pdf
Data publikacji:
2017
Wydawca:
Polskie Towarzystwo Leśne
Tematy:
lesnictwo
meteorologia
lasy
pomiary meteorologiczne
stacja pogodowa
prototypy
badania pilotazowe
arduino™
stevenson screen
sensors meteorological parameters
forest
Opis:
The aim of the study was to design a weather station dedicated for applications in the forestry. The device is thought to be used to measure temperature, pressure, humidity and sunlight and to record that data to the microSD memory card supplementing also the information on the time of measurement. The objective of the field part of the study was to gather accurate meteorological data from the interior of the forest to the geostatistical analysis, necessary for breeding purposes. Here we present the assumptions for technical equipment and describe the components of the device, including the systems of sensor and control. In the further stage of the study we performed the comparative test of the prototype with a professional weather station. The results show a very strong correlation between data form both devices, while the average error relative is at a very satisfactory level: temperature (0.15°C), relative humidity (–3.73%), pressure (–3.37 hPa) and light intensity (–0.82 klx). The project proved that it is possible to construct simple and economically grounded weather station. The total cost of presented prototype does not exceed 500 PLN (ca. 110 US$). We suggest to continue further research and development of the network of similar weather stations. It may allow to create a model of meteorological factors for bigger areas.
Źródło:
Sylwan; 2017, 161, 05; 405-412
0039-7660
Pojawia się w:
Sylwan
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Experimental tests on a dual fuel compression-ignition engine powered by biogas with a varying chemical composition
Autorzy:
Wierzbicki, S.
Śmieja, M.
Kozłowski, M.
Nieoczym, A.
Krzysiak, Z.
Powiązania:
https://bibliotekanauki.pl/articles/247546.pdf
Data publikacji:
2016
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
biogas
dual fuel compression-ignition engine
emission of toxic compounds
Opis:
Biogas is among the fuels whose significance in the general energy balance will increase. These results from the fact that it may be produced from various kinds of waste materials, and it is therefore considered a renewable fuel of the second generation. Because of its properties, biogas may be used directly to power spark-ignition engines. Nonetheless, numerous tests are underway involving the possibility of using biogas to power compression-ignition engines. In order to use biogas, whose main combustible component is methane, in compression-ignition engines, it is necessary to use a dual fuel power supply system. With such a system supplying power to the engine, the gas and air mixture in the cylinder is ignited by a small dose of liquid fuel. This paper presents a fragment of the research on the use of biogas with a varying chemical composition for powering compression-ignition engines. The described tests were conducted using a one-cylinder compressionignition engine mounted on an engine test stand. The fuel gas consisted of a mixture of natural gas and carbon dioxide; the share of each individual component was regulated from the station, which controlled the operation of the whole test stand. The developed control system also enabled the adjustment of the operating parameters of the engine test stand and the parameters of the injection of liquid fuel, such as the injection pressure, the timing angle of injection and the size of the dose. The results presented in the paper show the impact of the individual control parameters of the engine on the value of the engine’s torque and the amount of toxic compounds in the exhaust fumes.
Źródło:
Journal of KONES; 2016, 23, 3; 549-554
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Objectification of Diagnostic Symptoms in Examination of Nervous System Damage by Static Interactions and Kinematic Parameters of Ankle Joint
Autorzy:
Nitkiewicz, Sz.
Śmieja, M.
Gogolewski, T.
Majchrowski, A.
Grabarczyk, Ł.
Maksymowicz, W.
Powiązania:
https://bibliotekanauki.pl/articles/1197514.pdf
Data publikacji:
2014-04
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
87.85.G-
87.85.Ox
87.85.Tu
Opis:
Current diagnostics of patients' condition as well as assumed effects of the used medical diagnostic methods are a significant part of every medical treatment. The process of continuous gathering experience and comparing it with current knowledge leads to development of medical sciences and still growing effectiveness in practice. Numerous relations between particular human body systems and their interactions are very important for fast and precise diagnosis. In the paper, evaluation of the effects of neurosurgical procedures expressed as improvement of mechanical parameters of skeleton muscle system have been considered. The approach presented in the paper assumes description of results in terms of common physical units.
Źródło:
Acta Physica Polonica A; 2014, 125, 4A; A-27-A-30
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Assessment of usefulness of the mems-based integrated navigation unit in car navigation
Autorzy:
Uradziński, M.
Rapiński, J.
Tomaszewski, D.
Śmieja, M.
Guo, H.
Yu, S.
Jian, X.
Powiązania:
https://bibliotekanauki.pl/articles/298138.pdf
Data publikacji:
2017
Wydawca:
Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:
MEMS
inertial navigation
GNSS
GNSS/IMU integration
car navigation
Opis:
Due to the development of MEMS, there is an opportunity to build a low-cost integrated navigation systems, operating independently of horizon visibility. This paper presents the proposal of an integrated GPS/IMU platform using MEMS technology. In order to verify the performance of a system built at the University of Warmia and Mazury, an experiment was conducted. In this experiment a precise Javad GNSS receiver, commercial grade GPS/IMU XW – ADU5660 and own-built system were used. The experiment was conducted to compare the results obtained from self built device with the working military integrated navigation unit. During the study all three devices were mounted inside moving vehicle. The car drove route inside the Kortowo campus, during which, all equipment performed measurements. Then, the results from both integrated systems were compared with RTK (Real Time Kinematic) results from Javad receiver. Experiments prove that the performance of own device is comparable to the commercial device.
Źródło:
Technical Sciences / University of Warmia and Mazury in Olsztyn; 2017, 20(4); 321-331
1505-4675
2083-4527
Pojawia się w:
Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensitivity analysis of signaling pathway models based on discrete-time measurements
Autorzy:
Kardynska, M.
Smieja, J.
Powiązania:
https://bibliotekanauki.pl/articles/229721.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
sensitivity analysis
signaling pathways
measurement uncertainty
discretetime measurements
Opis:
The paper is focused on sensitivity analysis of large-scale models of biological systems that describe dynamics of the so called signaling pathways. These systems are continuous in time but their models are based on discrete-time measurements. Therefore, if sensitivity analysis is used as a tool supporting model development and evaluation of its quality, it should take this fact into account. Such models are usually very complex and include many parameters difficult to estimate in an experimental way. Changes of many of those parameters have little effect on model dynamics, and therefore they are called sloppy. In contrast, other parameters, when changed, lead to substantial changes in model responses and these are called stiff parameters. While this is a well-known fact, and there are methods to discern sloppy parameters from the stiff ones, they have not been utilized, so far, to create parameter rankings and quantify the influence of single parameter changes on system time responses. These single parameter changes are particularly important in analysis of signalling pathways, because they may pinpoint parameters, associated with the processes to be targeted at the molecular level in laboratory experiments. In the paper we present a new, original method of creating parameter rankings, based on an Hessian of a cost function which describes the fit of the model to a discrete experimental data. Its application is explained with simple dynamical systems, representing two typical dynamics exhibited by the signaling pathways.
Źródło:
Archives of Control Sciences; 2017, 27, 2; 239-250
1230-2384
Pojawia się w:
Archives of Control Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of biodiesel origin on the exhaust gasses concentration in compression ignition engine
Autorzy:
Duda, K.
Śmieja, Ł.
Mikulski, M.
Hunicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/245106.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
exhaust gas emission
common rail. biodiesel combustion
animal fat biodiesel mixtures
vegetable oil
biodiesel mixture
Opis:
The use of renewable fuels can reduce consumption of fossil fuels as well as diversify the range of alternative energy carriers. The advantage of biofuels is that they can be obtained from waste materials. Biofuels derived from vegetable or animal raw fatty material, as a result of transesterification, are characterized by similar physicochemical properties to mineral diesel fuel in terms of quality standards, however the fatty acid composition of the raw material can significantly influence exhaust gas emissions. The aim of the research is to determine the impact of the origin of various renewable biocomponents on exhaust gasses concentration emitted by compression ignition engine. The tests were conducted on a Common Rail, direct injection engine, operating under steady state conditions. Two kinds of biofuels produced from different fatty raw materials (rapeseed oil and swine lard) were used. All the experiments were performed on fuels containing a total of 50% biocomponent shares admixed to commercial diesel fuel. The tested samples included both: binary and ternary mixtures. During the experiments the differences in: hydrocarbons, carbon monoxide and nitrogen oxides concentrations were examined as a result of different fuel composition. The study shows that the best results were achieved for fuel containing both plant and animal biocomponents.
Źródło:
Journal of KONES; 2018, 25, 3; 145-152
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Sensitivity analysis of deterministic signaling pathways models
Autorzy:
Puszyński, K.
Lachor, P.
Kardyńska, M.
Śmieja, J.
Powiązania:
https://bibliotekanauki.pl/articles/201589.pdf
Data publikacji:
2012
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
signaling pathways
sensitivity analysis
Opis:
The paper is focused on application of sensitivity methods to analysis of signaling pathway models. Two basic methods are compared: local, based on standard sensitivity functions, and global, based on Sobol indices. Firstly, a general outline of modeling of signaling pathways by means of ordinary differential equations is briefly described. Afterwards, the methods of sensitivity analysis, known from literature, are introduced and illustrated with a simple example of a dynamical system of the second order. Subsequently, the analysis of the p53/Mdm2 regulatory module, which is a key element of any pathway involving p53 protein, is presented. The results of this analysis suggest that no single method should be chosen for investigation of any signaling pathway model but several of them should be applied to answer important questions about sources of heterogeneity in cells behavior, robustness of signaling pathways and possible molecular drug targets.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 3; 471-479
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Are infinite dimensional models applicable in modelling and analysis of cancer chemotherapy?
Autorzy:
Świerniak, A.
Kimmel, M.
Śmieja, J.
Rzeszowska-Wolny, J.
Powiązania:
https://bibliotekanauki.pl/articles/333061.pdf
Data publikacji:
2004
Wydawca:
Uniwersytet Śląski. Wydział Informatyki i Nauki o Materiałach. Instytut Informatyki. Zakład Systemów Komputerowych
Tematy:
odporność na leki
nieskończenie wymiarowy system
przekształcenia Laplace'a
drug resistance
branching random walk
infinite-dimensional systems
Laplace transforms
Opis:
Drug resistance and phase dependence have been regarded by many authors as the main obstacles against successful cancer chemotherapy. We propose a model which takes into account both these phenomena and give a tool to use phase specificity as an advantage rather than a fault and make it resistant of drug resistance. It combines models that so far have been studied separately, taking into account both the phenomenon of gene amplification and drug specificity in chemotherapy, in their different aspects. The mathematical description is given by an infinite dimensional state equation with a system matrix, the form of which enables decomposition of the model into two interacting subsystems. While the first one, of finite dimension, can have any form, the second one is infinite dimensional and tridiagonal.
Źródło:
Journal of Medical Informatics & Technologies; 2004, 8; MM3-10
1642-6037
Pojawia się w:
Journal of Medical Informatics & Technologies
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Qualitative analysis of controlled drug resistance model - inverse Laplace and and semigroup approach
Autorzy:
Świerniak, A.
Polański, A.
Kimmel, M.
Bobrowski, A.
Śmieja, J.
Powiązania:
https://bibliotekanauki.pl/articles/205965.pdf
Data publikacji:
1999
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
modele biomedyczne
proces gałązkowy
stabilność
układy nieskończenie wymiarowe
biomedical models
branching processes
infinite dimensional systems
stability
Opis:
In this paper we study some properties of infinite models of the controlled evolution of drug resistance. We combine asymptotic techniques used in previous studies of similar models with methods of control theory and of semigroup theory. It enables us to find conditions for stability of the model both when the sensitive population is annihilated and when there exists a permanent influx from the sensivite compartment into drug resistant one. The conditions are expressed in terms of relationships between amplification and deamplification ratios as well as average life times of cells and intensity of anticancer drug action.
Źródło:
Control and Cybernetics; 1999, 28, 1; 61-73
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Asymptotic analysis of three random branching walk models arising in molecular biology
Analiza asymptotyczna trzech modeli błądzenia z rozgałęzieniami z dziedziny biologii molekularnej
Autorzy:
Świerniak, A.
Polański, A.
Śmieja, J.
Kimmel, M.
Rzeszowska-Wolny, J.
Powiązania:
https://bibliotekanauki.pl/articles/206737.pdf
Data publikacji:
2003
Wydawca:
Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:
analiza asymptotyczna
modelowanie biomatematyczne
procesy rozgałęzień
systemy nieskończenie wymiarowe
asymptotic analysis
biomathematical modelling
branching processes
infinite dimensional systems
Opis:
Using asymptotic techniques based on Laplace transforms, spectral analysis and theory of feedback systems, we characterise the asymptotic behaviour of the repeat loci in microsatellite DNA and cancer cells with increasing number of copies of genes responsible for coding proteins causing drug removal or metabolisation as well as telomeres shortening, which is supposed to be the mechanism of ageing and death. These three problems are described by models in the form of infinitely many differential linear or bilinear first order equations, resulting from branching random walk processes used to represent the evolution of particles in these problems.
Wykorzystując techniki asymptotyczne oparte na transformatach Laplace'a, analizę spektralną oraz teorię układów ze sprzężeniem zwrotnym w artykule scharakteryzowano zachowanie asymptotyczne powtórek w DNA mikrosatelitarnym oraz w komórkach rakowych z rosnącą liczbą kopii genów odpowiedzialnych za kodowanie białek powodujących usuwanie lub przemianę metaboliczną leków, a także skracanie telomerów, o którym się sądzi, że jest mechanizmem starzenia się i śmierci. Te trzy zagadnienia są opisywane przy pomocy modeli w postaci nieskończonej liczby liniowych lub biliniowych równań pierwszego rzędu, wynikających z procesów błądzenia, stosowanych do opisu ewolucji cząstek w tych zagadnieniach.
Źródło:
Control and Cybernetics; 2003, 32, 1; 147-162
0324-8569
Pojawia się w:
Control and Cybernetics
Dostawca treści:
Biblioteka Nauki
Artykuł
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