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Tytuł:
Performance monitoring and diagnostics of drive units of heavy armoured equipment
Autorzy:
Piątek, M.
Powiązania:
https://bibliotekanauki.pl/articles/244477.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
diagnostics
engine diagnostics
monitoring
combustion engine
Opis:
Transform the way of visual indication of vehicle traction parameters and the introduction of instinctive, concentrated in one place on-board device service is now possible following the development of microprocessor systems. Centralize system for diagnosis and control of the vehicle in a single desktop, such as the one described here, brings except cost savings also facilitation in addition to the driver and service. Indicators of vehicle speed, engine rpm and other parameters of traction, and the rates and indication of operation states used for additional equipment during the performance of the activities are concentrated in one place. Controls elements, such as circuit breakers, switches and buttons are placed within the areas of appropriate comfort are grouped into blocks that are functionally similar, which further facilitates their location and service. The modern, multi-track switches allow additional control versatility, while reducing their volume, which facilitates access to each of them. Panel equipped with universal input and output circuits and system software provides the flexibility to work with the latest generation of sensors and actuators, and components used previously as well. This allows the design of modern devices and simple upgrading of vehicles already in service.
Źródło:
Journal of KONES; 2011, 18, 1; 443-446
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modelling in technical diagnostics
Autorzy:
Żółtowski, B.
Powiązania:
https://bibliotekanauki.pl/articles/247646.pdf
Data publikacji:
2010
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
technical diagnostics
identification
modelling
modal analysis
Opis:
The knowledge of the dynamic stat and structure of the system allows desercribing its behaviour, and allows creating prognosis models of the system behaviour in the function of dynamic evolution time, based on the model of the technical state symptoms growth. Most often, however, there are no known equations describing behaviours of the system in the function of dynamic evolution time, which accounts for the need to apply new tools to examine the dynamic state. There is, therefore, the requirement to experimentally verify analytical technical models as the proper one is a model which is verified in practice. An experiment is, therefore, often only an inspiration for further researches leading to the optimization of the construction. In this work presented are chosen problems of machines technical state diagnosis with the use of identification and technical diagnostics methods. Relations between methods of dynamic state evaluation and methods of technical state evaluation were indicated. Example modal analysis results illustrate the complexity of projecting dynamic state researches into diagnostic researches of machine state evaluation.
Źródło:
Journal of KONES; 2010, 17, 3; 541-546
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
CAN bus diagnostics
Autorzy:
Jajczyk, J.
Matwiejczyk, K.
Powiązania:
https://bibliotekanauki.pl/articles/97625.pdf
Data publikacji:
2014
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
data bus
diagnostics
vehicle electronics
Opis:
The paper contains information on the CAN bus, which is a data transmission network for communication between vehicle steering systems. Its structure is outlined, and the ways of message sending discussed. Methods of detecting faults when the CAN bus is physically damaged are presented. Signal changes are shown for typical faults.
Źródło:
Computer Applications in Electrical Engineering; 2014, 12; 376-385
1508-4248
Pojawia się w:
Computer Applications in Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostyka techniczna i diagnostyka medyczna - podobieństwa i zapożyczenia
Technical diagnostics and medical diagnostics - similarities and borrowings
Autorzy:
Langman, J.
Ślipek, Z.
Powiązania:
https://bibliotekanauki.pl/articles/290672.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Inżynierii Rolniczej
Tematy:
diagnostyka medyczna
diagnostyka techniczna
metoda diagnostyczna
medical diagnostics
technical diagnostics
diagnostic method
Opis:
Omówiono związki miedzy diagnostyką medyczną i techniczną. Mimo różnic w przedmiocie zainteresowań diagnostyki medycznej i technicznej, posługują się one podobnymi metodami diagnostycznymi (pomiarami sygnałów diagnostycznych), wspólne są też metody wnioskowania diagnostycznego.
Relations between medical and technical diagnostics are discussed. Despite differences in the subject of interest, both medical and technical diagnosis use similar diagnostic methods (diagnostic signals measurement). Methods of diagnostic inference are common, too.
Źródło:
Inżynieria Rolnicza; 2008, R. 12, nr 6(104), 6(104); 121-126
1429-7264
Pojawia się w:
Inżynieria Rolnicza
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
E-diagnostyka urządzeń końcowych sieci
E-diagnostics of network terminal units
Autorzy:
Lisowiec, A.
Kołodziejczyk, Z.
Powiązania:
https://bibliotekanauki.pl/articles/187593.pdf
Data publikacji:
2010
Wydawca:
Sieć Badawcza Łukasiewicz - Instytut Technik Innowacyjnych EMAG
Tematy:
diagnostyka
diagnostyka kontrolera pola
diagnostics
diagnostics of field controller
Opis:
W artykule przedstawiono urządzenie końcowe sieci - kontroler pola, z zintegrowanymi funkcjami zabezpieczeń. Dokonano analizy jakości energii wraz z rozszerzoną autodiagnostyką, obejmującą kompletne prądowe i napięciowe tory analogowe, przeprowadzaną bez przerywania normalnej pracy. Opisano również zastosowane w urządzeniu zaawansowane techniki cyfrowego przetwarzania sygnałów.
The article features a description of a network terminal unit - a field controller with integrated protection functions. The analysis of energy quality was carried out, along with extended auto-diagnostics which covered complete current and voltage analogue lines and was conducted without work interruptions. Additionally, the article describes advanced technologies of digital signal processing which were applied in the unit.
Źródło:
Mechanizacja i Automatyzacja Górnictwa; 2010, R. 48, nr 7, 7; 40-45
0208-7448
Pojawia się w:
Mechanizacja i Automatyzacja Górnictwa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibration diagnostics of spiroid gear
Autorzy:
Nikitin, Yury
Božek, Pavol
Turygin, Alexander
Powiązania:
https://bibliotekanauki.pl/articles/2175874.pdf
Data publikacji:
2022
Wydawca:
STE GROUP
Tematy:
spiroid gear
vibration
diagnostics
Opis:
Spiroid gear is one of the progressive varieties of intersecting axis gears. It has a number of advantages: increased overlap coefficient, favourable contact conditions. Spiroid gears are notable for high loading and overloading ability, increased smooth running and less sensitivity to manufacturing and assembly errors, high reliability and durability. The analysis of the results of experiment on research of vibration of the spiroid gear PS-124 has shown, that the vibration level at frequency 200-300 Hz is reduced on 5 dB at increase of the resistance moment up to 1000 Nm at clockwise rotation of the reducer and at increase of the resistance moment up to 800 Nm at counter-clockwise rotation of the reducer. The vibration level at frequency 700-800 Hz is also increased on 5 dB at increase of the resistance moment up to 1000 Nm at clockwise rotation of the reducer and at increase of the resistance moment up to 800 Nm. If these vibration levels are exceeded, a defect is likely to occur. Economic efficiency of application of diagnostics systems is caused by increase of reliability and quality, reduction of accidents, decrease in defects, reduction of idle time of expensive equipment, reduction of expenses for maintenance and repair.
Źródło:
Management Systems in Production Engineering; 2022, 1 (30); 69--73
2299-0461
Pojawia się w:
Management Systems in Production Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Dostępność, jakość i finansowanie diagnostyki laboratoryjnej - ważne źródło informacji medycznej
Quality, Access to and Financing of Laboratory Diagnostics – An Important Source of Medical Information
Autorzy:
Gniadek, Lila
Powiązania:
https://bibliotekanauki.pl/articles/416400.pdf
Data publikacji:
2018-04
Wydawca:
Najwyższa Izba Kontroli
Tematy:
laboratory diagnostics
medical laboratory diagnostics
laboratory tests
diagnostician
financing of laboratory diagnostics
Opis:
Laboratory tests are the cheapest and easily accessible source of medical information about a patient. Although they make an important and frequently decisive element of the diagnostic and therapeutic process, the expenditure on tests in Poland is many times lower than that in other countries of the European Union. The Supreme Audit Office, in accordance with its work plan and guided by the suggestions of the Parliamentary Health Committee, has conducted an audit to evaluate the organisation, quality, access to and financing of the activities related to laboratory diagnostics. The audit comprised: the Ministry of Health, medical entities and laboratory diagnostics subcontractors, including medical diagnostic laboratories in six regions of Poland.
Źródło:
Kontrola Państwowa; 2018, 63, 2 (379); 43-59
0452-5027
Pojawia się w:
Kontrola Państwowa
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Laboratory modelling and acoustic diagnostics of hydrodynamical processes
Autorzy:
Chernov, V.
Powiązania:
https://bibliotekanauki.pl/articles/331504.pdf
Data publikacji:
2008
Wydawca:
Polskie Towarzystwo Akustyczne
Tematy:
hydrodynamical processes
laboratory modelling
acoustic diagnostics
Opis:
In the present paper results of modelling of wind interaction with a water layer surface and research of the vortical structures arising downstream the flow around bodies are described. Results of the use of the method of acoustic diagnostics of spatially - periodic vortical flows are presented. At physical modelling in laboratory conditions wind was created with a low-velocity wind tunnel. The structure of an air stream and convective cells on water surface was investigated with the help of visualization. Some pictures of structures on the shallow sea surface are also demonstrated and discussed.
Źródło:
Hydroacoustics; 2008, 11; 47-54
1642-1817
Pojawia się w:
Hydroacoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Urine headspace analysis in medical diagnostics
Autorzy:
Kalinowska, Kaja
Namieśnik, Jacek
Powiązania:
https://bibliotekanauki.pl/articles/1163146.pdf
Data publikacji:
2018
Wydawca:
Przedsiębiorstwo Wydawnictw Naukowych Darwin / Scientific Publishing House DARWIN
Tematy:
VOC
biomarkers
medical diagnostics
medicine
urine
Opis:
The analysis of the volatile organic compounds in the bodily fluids such as urine may provide useful information on the patients’ general health. The potential application of urine headspace analysis could facilitate the diagnostics of various diseases such as metabolic disorders, urinary tract diseases and gastrointestinal conditions. Described in this paper are the currently available techniques of urine sample analysis as well as their different application in medical diagnostics.
Źródło:
World Scientific News; 2018, 110; 236-243
2392-2192
Pojawia się w:
World Scientific News
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibro-acoustic methods in marine diesel engines diagnostics
Autorzy:
Lus, T.
Powiązania:
https://bibliotekanauki.pl/articles/245521.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
marine diesel engine
turbocharger
diagnostics
vibration
Opis:
Vibro-acoustic diagnostic methods which are used on marine high-speed diesel engines with turbochargers are presented in this paper. Vibration and acoustic signals generated by turbochargers need different signal processing methods to be effective and faultless in turbochargers diagnostics. Diagnostic methods which based on vibration and acoustic signals analysis are sensitive on engine load and speed changes. Methods presented in this paper based on vibration and acoustic signals processing in time and frequency domain. Using this methods checking technical condition of the turbochargers and its rotors and bearings without stopping the engine and dismantling it is possible. Examples of radial-flow rotor turbine overgrown by carbon soot and axial-flow rotor turbine without turbine blades, sound intensity level of turbocharger and acoustic spectrum of turbocharger in octave mode acoustic spectrum of turbocharger in octave mode for two different technical conditions, acoustic and vibration signal spectrum of the turbocharger, vibration acceleration amplitude of first harmonic for three turbochargers, values of harmonic vibrations of accelerations equivalent of turbine blades number, amplitude of vibrations accelerations in frequency domain for turbocharger in good and bad technical conditions are presented in the paper.
Źródło:
Journal of KONES; 2011, 18, 3; 203-210
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Marine diesel engine valve gear mechanism diagnostics problems
Autorzy:
Lus, T.
Powiązania:
https://bibliotekanauki.pl/articles/245681.pdf
Data publikacji:
2009
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
marine diesel engine
diagnostics
valve gear
Opis:
Marine diesel engines have changed their construction last years because of electronic control implementation in fuelling process. Electronic control implementation could be also important in valve gear mechanism which is main part of the engine gas es exchange system. In this paper problems connected with of valve gear mechanisms operation and diagnostics have been presented. the diagnostic methods and processes which could impact diagnostic process will be shown together with examples from test bed and real vessels. diagnostic methods which based on vibration signals analysis are sensitive on engine load and speed change. separate engine cylinder 's loads generale differences in so called "dynamic valve gear diagrams " which will be shown for some marine engine types. opening and closing of inlet and exhaust valves generale vibration signals in entire engine structure. There are some tools available in signal analysis which gives opportunity to trace changes in signal patterns in real time monitoring systems. special diagnostic method based on vibration signal analysis worked out in the polish naval academy, gives opportunity to change engine maintenance philosophy from scheduled planed maintenance system to condition based maintenance system without fear about real operating engine conditions.
Źródło:
Journal of KONES; 2009, 16, 4; 287-292
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics and analysis of jet engine malfunctions
Autorzy:
Rojewski, A.
Bartoszewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/242847.pdf
Data publikacji:
2018
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
jet engine
aircraft
diagnostics
safety
Opis:
The article describes emergency situations occurring in the propulsion system of an aircraft with the jet engine used in Poland on planes such as MiG-29 or F-16. The article also presents statistics of polish aircrafts damage over the years. Due to the technological progress of turbine engines used in fighter aircraft, the authors decided to discuss the issue of monitoring emergency states in this study. In particular, efforts have been made to ensure that damage to the aircraft engine can be prevented by monitoring its operation with the equipment available on the aircraft. Counteracting phenomena that occur in the jet engine can lead to permanent damage; can lead to an increase in the safety of the pilot and the local population, but also to a reduction of costs. The authors also decided to se the threats that occur during take-off and landing, and the flight when they land outside the plane. Jet engines are almost reliable and most common cause of engine damages as the analysis shows are foreign bodies, particularly dangerous for a turbine engine on or near the runway, as well as birds, which provides to mechanical damage of engine. Securing the airport against foreign objects on the runway is one of the most important tasks of ground staff.
Źródło:
Journal of KONES; 2018, 25, 2; 313-318
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of vessel power plants
Autorzy:
Charchalis, A.
Powiązania:
https://bibliotekanauki.pl/articles/247146.pdf
Data publikacji:
2011
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
technical diagnostics
piston engines
gas turbine engines
vessel power plants
Opis:
In this paper, the problems of diagnostics of main propulsion marine engines are presented. Diesel or turbine engines are used for main propulsion of vessel power plants. Marine engine is a complex technical object. For the purpose of diagnostics it is convenient to divide the engine into several units - subsystems such as: piston -crank assembly; working medium exchange system, fuel supply system, lubricating system, cooling system, starting up -reversing system; combustion chamber. The organization of the marine engine diagnostic process can usually come down to two stages, general diagnostics and damage location. Most popular in marine engine diagnostics have been the periodic run analyzers, called pressure analyzers, electronic indicators or MIP (Mean Indicated Pressure) calculators. Marine turbine engine operation requires professional technical supervision. The basic diagnostic system of marine turbine engine is able to assess the current engine condition and give forecast concerning its future operation in a complex way with the use of computer technology. Working out operating decision was based on proper preparation of operational parameters which were processed in a computer according to defined algorithms. Diesel engine diagnostic systems of merchant vessel engines are discussed. Finally, description of diagnostic methods implemented in turbine and piston engines in Polish Navy ships are introduced.
Źródło:
Journal of KONES; 2011, 18, 2; 41-47
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Innovative approach to electric vehicle diagnostics
Autorzy:
Małek, Arkadiusz
Toccani, Rodolfo
Powiązania:
https://bibliotekanauki.pl/articles/1838337.pdf
Data publikacji:
2021
Wydawca:
Sieć Badawcza Łukasiewicz. Przemysłowy Instytut Motoryzacji
Tematy:
ecological transport
electric vehicle
diagnostics
battery charging
Opis:
Electromobility is associated with the ever faster development and introduction of new electric vehicles to the market. They use an electric motor to drive the wheels of the vehicle and the necessary electricity is stored in traction batteries. Electric vehicles have a different construction than traditional vehicles i.e. those powered by internal combustion engines. For this reason, the manner of use, maintenance and service are different. Familiarization with selected operational issues of electric vehicles positively affects the reliability of their use as well as safety and comfort of driving. An important component of electric vehicles is the traction battery. Its proper operation influences the long-term preservation of the initial energy capacity and, thus, the range of the vehicle. The article presents tests of the state of traction batteries of a small electrically powered city vehicle. The vehicle, the batteries and the diagnostic devices used to assess the condition of the battery are described in detail. Based on the literature analysis and the observation of market trends, a fast and effective method of assessment of the technical condition of batteries in electric vehicles is proposed. The method has been tested on the selected vehicle. The technical condition of the battery in the vehicle was assessed after 4.5 years of operation and 30,000 km mileage.
Źródło:
Archiwum Motoryzacji; 2021, 92, 2; 49-67
1234-754X
2084-476X
Pojawia się w:
Archiwum Motoryzacji
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Conditionings of Modeling of Electrical Devices Exploitation and Diagnostics Strategies
Autorzy:
Węgrzyn, B.
Powiązania:
https://bibliotekanauki.pl/articles/409256.pdf
Data publikacji:
2015
Wydawca:
Politechnika Poznańska. Wydawnictwo Politechniki Poznańskiej
Tematy:
exploitation strategies
electrical devices
diagnostics models
Opis:
Paper presents conditionings of exploitation diagnostics strategies of devices modeling of electro energetic distribution networks example. Management processes of technical infrastructure are described in exploitation theory and product’s quality evaluation of installations, machines and devices, which concerns synthesis, analyzes and exploitation system researches, in particular problems of their utilization and technical services. There are presented reliability models of exploitation are interrelated with user’s safety and device’s quality parameters. Conditionings of existing types of exploitation strategies selection have been discussed in regard to high voltage electrical devices (transformers). As conclusion of thesis proposal of optimal selection of exploitation and diagnostic’s strategy based on reliability strategy in compliance with technical status quo based service have been elaborated.
Źródło:
Research in Logistics & Production; 2015, 5, 5; 471-480
2083-4942
2083-4950
Pojawia się w:
Research in Logistics & Production
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechatronics in diagnostics
Mechatronika w diagnostyce
Autorzy:
Uhl, T.
Powiązania:
https://bibliotekanauki.pl/articles/329648.pdf
Data publikacji:
2008
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
mechatronika
diagnostyka
monitorowanie stanu konstrukcji
mechatronics
diagnostics
structural health monitoring
Opis:
This paper deals with current problems of diagnosing mechanical structures. The structural diagnostics have been presented as an interdisciplinary area integrating the fields of mechanics, electronics, computer science and materials engineering. The analogy between mechatronics and structural diagnostics will be discussed. The diagnostic methods contain three basic elements: measurements, including sensors designing and signal processing, procedures and diagnostic algorithms as well as structure properties prediction. The main issues within monitoring and structural diagnostics will be presented in the paper.
W pracy przedstawiono współczesna problematykę diagnozowania konstrukcji mechanicznych. Przedstawiono diagnostykę konstrukcji jako dziedzinę interdyscyplinarną, stanowiącą integrację mechaniki, elektroniki, informatyki i inżynierii materiałowej. Pokazana zostanie analogia pomiędzy mechatroniką, a diagnostyką konstrukcji. Metody diagnostyki zawierają trzy podstawowe elementy; pomiary, w tym konstrukcja czujników, przetwarzanie sygnałów; metody i algorytmy oraz przewidywanie własności konstrukcji. W ramach referatu przedstawione zostaną podstawowe problemy z dziedziny monitorowania i diagnostyki konstrukcji.
Źródło:
Diagnostyka; 2008, 3(47); 143-152
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A review of model based and data driven methods targeting hardware systems diagnostics
Autorzy:
Skliros, Christos
Esperon Miguez, Manuel
Fakhre, Ali
Jennions, Ian K.
Powiązania:
https://bibliotekanauki.pl/articles/328982.pdf
Data publikacji:
2019
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
diagnostics
system diagnostics
condition based maintenance
model based diagnostics
data driven
diagnostyka
eksploatacja oparta o stan systemu
diagnostyka na podstawie modelu
Opis:
System health diagnosis serves as an underpinning enabler for enhanced safety and optimized maintenance tasks in complex assets. In the past four decades, a wide-range of diagnostic methods have been proposed, focusing either on system or component level. Currently, one of the most quickly emerging concepts within the diagnostic community is system level diagnostics. This approach targets in accurately detecting faults and suggesting to the maintainers a component to be replaced in order to restore the system to a healthy state. System level diagnostics is of great value to complex systems whose downtime due to faults is expensive. This paper aims to provide a comprehensive review of the most recent diagnostics approaches applied to hardware systems. The main objective of this paper is to introduce the concept of system level diagnostics and review and evaluate the collated approaches. In order to achieve this, a comprehensive review of the most recent diagnostic methods implemented for hardware systems or components is conducted, highlighting merits and shortfalls.
Źródło:
Diagnostyka; 2019, 20, 1; 3-21
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wybrane zagadnienia diagnostyki wizyjnej toru kolejowego
Chosen issues of the visional diagnostics of the railway tracks
Autorzy:
Bojarczak, P.
Lesiak, P.
Powiązania:
https://bibliotekanauki.pl/articles/252897.pdf
Data publikacji:
2013
Wydawca:
Instytut Naukowo-Wydawniczy TTS
Tematy:
diagnostyka
tor kolejowy
wada
metoda wizyjna
diagnostics
railway track
defect
visional diagnostics
Opis:
Znaczący rozwój technologii wizyjnych, obejmujący zarówno sprzęt (kamery, serwery), jak również algorytmy obróbki i analizy obrazów, spowodował znaczące zwiększenie zainteresowania zastosowaniem tych technologii w diagnostyce toru kolejowego. Technologie wizyjne są szczególnie przydatne, a nawet niezbędne w przypadku detekcji wad powierzchniowych szyn. Zastosowanie w tym przypadku tradycyjnych metod diagnostycznych, bazujących na technice ultradźwiękowej, przynosi niedoskonałe rezultaty. Dlatego poszukuje się alternatywnych metod pozwalających na detekcje tego typu wad, czego przykładem może być metoda prądów wirowych, stosowana np. na kolejach niemieckich. Jednak jej praktyczne zastosowanie w systemach o znaczących prędkościach badania w trudnych warunkach, jakie panują na szlaku kolejowym, również powoduje określone ograniczenia. Stąd należy dążyć do zastosowania technologii w pełni bezkontaktowych, takich jak metody wizyjne.
Źródło:
TTS Technika Transportu Szynowego; 2013, 2-3; 65-70
1232-3829
2543-5728
Pojawia się w:
TTS Technika Transportu Szynowego
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Simultaneous Analysis of Noise and Vibration of Machines in Vibroacoustic Diagnostics
Autorzy:
Dąbrowski, Z.
Dziurdź, J.
Powiązania:
https://bibliotekanauki.pl/articles/176544.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
mechanical vibration
noise
vibroacoustic diagnostics
Opis:
The article is a continuation of the authors’ elaboration (Dąbrowski, Dziurdź, 2016). The aim of this continuation is to prove that a proposed way of modelling and using the coherent analysis to filter nonlinear disturbances is a useful technique in vibroacoustic diagnostics. The thesis was proved by solving the task of diagnosing the damage of the gear of the car gearbox on the basis of the measurement of mechanical vibrations and the noise in the engine chamber.
Źródło:
Archives of Acoustics; 2016, 41, 4; 783-789
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Newtonian and Bergsonian time in technical diagnostics
Autorzy:
Borowczyk, H.
Lindstedt, P.
Manerowski, J.
Powiązania:
https://bibliotekanauki.pl/articles/247474.pdf
Data publikacji:
2012
Wydawca:
Instytut Techniczny Wojsk Lotniczych
Tematy:
technical diagnostics
reliability
Newtonian time
Bergsonian time
Opis:
Testing and reasoning are two main closely related diagnostic activities. Diagnostic testing is realized in Newtonian (short) time while diagnostic reasoning - in (long) Bergsonian time. Both sort of time are used to analyze different kinds of problems in diagnostics and reliability of technical objects. Newtonian and Bersonian time differentiation needs some expert knowledge. In this paper, considerations are based on observation that Newtonian time of diagnostic testing is related to object maintenance (adjustment) and Bergsonian time is related to object is reliability. A significant change of the object’s technical condition (signals or parameters of the state) causes changes of its regulation state (quality indicators change) and the characteristics of reliability. As it is required for the operation and reliability to be always appropriate and permanent, the control should be adjusted to functional needs of the object, and the use should be adapted to the current characteristics of reliability. Therefore, change of the settings of the control device (made during the handling of the object) represents the change of technical condition and state of reliability. It is presumed that, during the operation of a technical object, the selection of the control settings for damaged object is impossible. This fact, when predicted, becomes the basis for the prediction of the object reliability.
Źródło:
Journal of KONES; 2012, 19, 2; 61-66
1231-4005
2354-0133
Pojawia się w:
Journal of KONES
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Diagnostics of the Passenger Lift Winch
Autorzy:
Szydło, Kamil
Longwic, Rafał
Powiązania:
https://bibliotekanauki.pl/articles/102126.pdf
Data publikacji:
2018
Wydawca:
Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:
diagnostics
noise
thermovision
passenger lifts
diagnostyka
hałas
termowizja
dźwigi osobowe
Opis:
The proposal of the diagnostics methodology for the passenger lift winch is presented in this article. The selected device is tested against the emitted volume of sound and vibrations observed in the regular operation (driving operation as per agreed testing sequence). Thermal images are prepared to catch incorrect operation of the winch mechanisms. On the basis of received measurements for the sound volume, accelerations (vibrations), the analysis of vibrations frequency and thermal images, the attempt is made to diagnose the winch condition and to indicate possible reasons of the malfunctions condition.
Źródło:
Advances in Science and Technology. Research Journal; 2018, 12, 1; 26-35
2299-8624
Pojawia się w:
Advances in Science and Technology. Research Journal
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Vibration diagnostics of footbridge with use of rotation sensor
Autorzy:
Banaś, A.
Wilde, K.
Powiązania:
https://bibliotekanauki.pl/articles/1395589.pdf
Data publikacji:
2014
Wydawca:
Polskie Towarzystwo Promocji Wiedzy
Tematy:
vibrational diagnostics
footbridge
sensitivity analysis
rotation sensors
Opis:
The benefits of the additional measurement of rotational degrees of free-dom on the performance of the vibration diagnosis of bridges are studied in this paper. The common vibrational diagnostics that uses translational degrees of freedom is extended by measurements of rotations. The study is curried out on a footbridge and the presence of damage as well as its location and size is determined with use of FEM updating procedure. The results showed that rotational degrees of freedom significantly improve the effectiveness of the vibrational method.
Źródło:
Applied Computer Science; 2014, 10, 4; 38-49
1895-3735
Pojawia się w:
Applied Computer Science
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Wektor innowacji w diagnozowaniu
Innovation vector in diagnostics
Autorzy:
Krzyworzeka, P.
Powiązania:
https://bibliotekanauki.pl/articles/328648.pdf
Data publikacji:
2004
Wydawca:
Polska Akademia Nauk. Polskie Towarzystwo Diagnostyki Technicznej PAN
Tematy:
diagnostyka
identyfikacja
rzutowanie optymalne
innowacje
diagnostics
identyfication
optimal projection
innovations
Opis:
Wektor innowacji może stanowić użyteczny opis rezultatów identyfikacji diagnostycznej obiektu w zmiennych warunkach eksploatacji. Reprezentuje kierunek minimalizujący wrażliwość odwzorowań lokalnych na zmiany nieinformacyjne. Wprowadzono jednolitą reprezentację różnych rodzajów zakłóceń właściwych diagnozowaniu i zastosowanie procedurę rzutowania optymalnego Odwzorowanie w kierunku innowacji pozwoliło w praktyce zredukować o kilka rzędów wpływ zakłóceń związanych ze zmiennymi warunkami pracy. Opisana metoda generuje także wskaźnik jakości informatywnych współrzędnych wektora obserwacji, co pozwoliło zweryfikować skuteczność prostej procedury selekcji danych. Podano przykłady zastosowań.
Some changes of signal features that don't occur in proper technical state are called innovative. The paper aims to show that in some identification experiments innovation vector co represents direction of maximum SNR especially towards variable exploitation state. A method of c estimation using optimal projection has been discussed. Based on co one-dimensional subspace simplifies symptoms and diagnostic discrimination. A bit of practical results is presented.
Źródło:
Diagnostyka; 2004, 31; 13-20
1641-6414
2449-5220
Pojawia się w:
Diagnostyka
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Application of expert systems in diagnostics, management and logistics
Autorzy:
Korczewski, Z.
Powiązania:
https://bibliotekanauki.pl/articles/259842.pdf
Data publikacji:
2008
Wydawca:
Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:
diagnostics
expert systems
logistics
management
power plants
simulate human behaviour
Opis:
There has been demonstrated base terms concerning expert systems and analysis of their organisation structure. Some possibilities of the expert knowledge codification worked out on the basis of different application of the object-attribute-value triplets have been presented as well.
Źródło:
Polish Maritime Research; 2008, 3; 86-91
1233-2585
Pojawia się w:
Polish Maritime Research
Dostawca treści:
Biblioteka Nauki
Artykuł
Wyświetlanie 1-25 z 2235

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