Wszystkie pola: M model - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Construction of freight transport model for transport planning in urban agglomerations
Autorzy:: Jacyna, M.
Wasiak, M.
Kłodawski, M.
Gołębiowski, P.
Powiązania:: https://bibliotekanauki.pl/articles/246857.pdf
Data publikacji:: 2016
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: model of freight traffic
urban agglomeration
Warsaw Travel Household Survey 2015
trip modelling
Opis:: The article presents the principles of freight transport model for transport planning in urban agglomerations construction. We presented one of the concept for its preparation and necessary assumptions, which should be adopted on conceptual stage. We show the example of freight model for Warsaw agglomeration, which was prepared under the Warsaw Travel Household Survey 2015. We presented formal record of the model with its implementation in the environment PTV VISUM. We characterized the network model and demand model and presented the issues of the model calibration. Developed model is a fully featured tool for modelling of travels of heavy goods vehicles in the area of Warsaw agglomeration. In addition, in accordance to the cooperation with the model of passenger traffic in the individual and public transport, as well as the model of bicycle traffic, it is an integral part of a comprehensive tool for modelling, analysis and evaluation of mobility behaviour of Warsaw agglomeration inhabitants, as well as business entities located in this area. Calibrated model of freight traffic for the existing situation is the basis for the implementation of traffic forecasts, which are analyses the state of the transport system in the future.
Źródło:: Journal of KONES; 2016, 23, 4; 143-150
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 2.

Tytuł:: Mass model of microgasturbine single spool turbojet engine
Autorzy:: Czarnecki, M.
Powiązania:: https://bibliotekanauki.pl/articles/247344.pdf
Data publikacji:: 2013
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: gas turbine
micro gas turbine
mass model
Schreckling
turbojet
Opis:: Presented paper consists detailed mass model of micro gas turbine single spool turbojet in well-known Scheckling design layout (1R/1A). One of major criteria in aviation is weight that is granted by airworthiness requirements. At present, exempt from certification process are RC airplanes or UAV with total take-off weight less than 22.5 kg. From the 70's mass model was added as a part of aero engines design process. Engine weight affects airplane or UAV weight greatly, because it is a source of variety structure loads. Weight reduction efficiency factor, verifying in terms of design quality a micro gas turbine, and the flying object as a system. Developed computational model allows to estimate weight of the components (gas generator shaft, compressor rotor, compressor diffuser, combustor, turbine nozzle, turbine rotor, jet pipe, casings and housings) and whole engine as well. Model inputs are related to technological axisymmetric dimensions obtained from thermo gas dynamic and construction equations, making it easy to use. Obtained results was presented for several micro gas turbines (mSO1-designed by author, FD3-64, TK-50, JF-50, MW-54, KJ-66, AMT Olympus). Advantage of this model allows to avoid time consuming CAD modelling process at design study level. Presented algorithm can be used also in the design of UAV as well as issues related to the preliminary multidisciplinary design and optimization PMDO cases.
Źródło:: Journal of KONES; 2013, 20, 1; 49-54
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 3.

Tytuł:: Development of model for testing of driving properties
Autorzy:: Brabec, P.
Maly, M.
Vozenilek, R.
Powiązania:: https://bibliotekanauki.pl/articles/243366.pdf
Data publikacji:: 2007
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: 4WS
Four-Wheel Steering
Scale car model
Opis:: Technical University of Liberec prepares a functional car model with a four-wheel steering in a reduced scale (1:5). For years, reduced scale models have been a valuable tool (especially in the aircraft and ship industry) for analyses of properties and experimenting. Consequently, experiments, which would be otherwise unrealistic, can be made, the system functionality can be verified and the impact of slight changes and design modifications can be analysed. All of this within a relatively short period of time and at low costs. The paper presents the application of a reduced scale car model for the 4WS (Four-Wheel Steering) system development and practical assignment necessary for set up. Also shows the use of individual components for functional implementation of this system. The 4WS system pursues the target of enhanced overtaking stability, elimination of positional variances towards its vertical axis, lower sensitivity to side wind, neutral cornering behaviour etc., thus higher active safety. On the basis of results of driving tests of the scale model and after evaluation of parameters of steering behaviour and driving stability, the computer simulation model of the vehicle could be refined. The reduced scale vehicle model, equipped with the respective sensors of quantities and actuating units, allows carrying out driving tests under laboratory conditions, verification and possible optimisation of algorithms for the control of direction steering of the model is presented in the paper.
Źródło:: Journal of KONES; 2007, 14, 3; 109-115
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 4.

Tytuł:: Initial model of transport means availability of real city transport system
Autorzy:: Woropay, M.
Migawa, K.
Bojar, P.
Powiązania:: https://bibliotekanauki.pl/articles/242151.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: city transport system
Markov's model
technical object
Opis:: The article presents a determination method of transport means service ability in a real city transport system. The considerations have been demonstrated on the basis of a real city bus transport system in a chosen agglomeration. The executive subsystem consisting of elementary subsystems of the type human - technical object (operator - transport means) whose service ability and reliability have a direct influence on capability to perform the transport task is directly responsible for accomplishment of the city transport system tasks. In order to develop a model of means of transport serviceability there were determined significant states of the operational use process and there was made a division and reduction of the number of states in terms of the availability criterion. On this basis, an event model of the process of transport means operational use, and then a mathematical model of this process, were built with the assumption that its model is a homogenous Markov 's process X(t). Next, boundary values of availability coefficient for the distinguished availability levels of transport means used in the city transport system were determined for operational data obtained from a real city bus transport system. The discussed model for determination of transport means availability is an initial one, developed on the basis of a nine-state model of operational use. In further part of the paper, there will be developed a resultant model of transport means availability determination (semi-Markov 's sixteen-state model), being a component of a wider, decision model for creation and assessment of transport means availability.
Źródło:: Journal of KONES; 2009, 16, 2; 495-502
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 5.

Tytuł:: Method for assessment of risks connected with technical object functioning on the basis of Markov model of operation process
Autorzy:: Woropay, M.
Migawa, K.
Bojar, P.
Szubartowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/247063.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport system
operation process
Markov model
risk
Opis:: In the article, a method for assessment of risks connected with a technical object functioning has been studied, in a selected operating system. An urban system of bus transportation, in a selected urban complex, has been chosen as the research object. Functioning of each technical object operating system, including transportation systems, is dependent on its possibility to perform properly the assigned transport task. One of the methods for assessment of the transportation system ability to accomplish the assigned transport task in a proper way is determination of the transport means operation risk. The presented approach involves determination of indexes defining the risks connected with functioning of one technical object (transport means) in an executive subsystem. Indexes of the risk connected with functioning of a single technical object have been determined on the basis of a mathematical model of the operation process, in the studied transportation system. On the basis of the identification of the authentic transport system and the means of transport operation process carried out in it, crucial operational states were designed as well as the possibilities of transferring between the particular states. Based on that, an event-centered model of the use of the means of transport was built, followed by a mathematical model of that process. A Mathematical model of the operation process has been developed with acceptance of an assumption that the process model is to be represented by a homogeneous Markov model X(t). In this paper, the transport means operation risk is determined as a product of probability (or sum of probabilities) of its being in an undesirable state (states) of the Markov model of transport means operation process and the size of the damage in effect of being in the state (states). The size of the suffered damage is measured by a product of time and unit cost whose quantities are connected with being in the operation process undesirable state or states. Assessment of risk connected with technical objects operation and maintenance can be the point of reference to formulate design requirements concerning durability and reliability of the operated objects (transport means) as well as assumptions concerning design or modernization of the technical means necessary for assurance of the vehicle availability in a given transport system.
Źródło:: Journal of KONES; 2011, 18, 4; 563-569
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 6.

Tytuł:: The car fleet management model with including expectations of the users
Autorzy:: Szczepański, E.
Nivette, M.
Jacyna-Gołda, I.
Izdebski, M.
Powiązania:: https://bibliotekanauki.pl/articles/243821.pdf
Data publikacji:: 2018
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Car Fleet Management
assignment
vehicle to task
decision-making model
fleet management
Opis:: The paper presents a certain approach to fleet management in the company, taking into account the mobility of employees and the selection of vehicles for tasks. The main objective is to indicate the factors that significantly affect the proper selection of vehicles for the task, as well as concurrently meeting recipients' needs. The general model for fleet management was presented, taking into account not only the mobility of employees but also the method of obtaining funds for the replacement of greener cars. The current approach is based on the car purchase model in the form of credit, low-purchase leasing, and supervision over the use process and operating costs by the company's internal resources. The problem solved in the article concerns the analysis of entrusting fleet management to specialized Car Fleet Management (CFM) companies. It was pointed out that in this calculation model, CFM companies have to take into account many variables related to vehicle selection and mobility of employees in order to perform tasks. In this article, particular attention has been paid to the areas that CFM analyses when choosing a vehicle for a given company.
Źródło:: Journal of KONES; 2018, 25, 4; 489-500
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 7.

Tytuł:: Mathematical model of the main battle tank witch stabilized turret and gun
Autorzy:: Papliński, K. M.
Powiązania:: https://bibliotekanauki.pl/articles/950133.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: main battle tank
tank gun stabiliser
mathematical model
Opis:: The subject of discussion is the T-72 main battle tank. The tank is treated as three distinct bodies, representing thull, the turret and the gun. The rigid bodies are subject to a set of kinematics constraint relationships, which provide the physical interface of the system. The gun and turret are assumed to bend in the elevation and azimuth direction. Angular and axial displacements of vehicle are the input signals acting on the turret and the gun. The tank gun stabiliser, minimise the effects of vehicle motion on the main armament of tank and compensates the velocities of the vehicle. Stabilisation system, automatically maintain the position of the gun at a fixed bearing in space, in spate of any motion of the vehicle in roll, inpitch or in yaw. Mathematical model of the tank, the turret and the gun functioned as one system with the model of tank gun stabiliser (verified on the base of experimental investigations) were build. The equations of motion associated with a military tank are derived using Lagrange equations. In the next stage of the work the mathematical model could be used for versatile numerical tests of existing, modernized types of combat vehicles.
Źródło:: Journal of KONES; 2009, 16, 1; 387-395
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 8.

Tytuł:: Global FEM model of combat helicopter
Autorzy:: Gmurczyk, G.
Reymer, P.
Kurdelski, M.
Powiązania:: https://bibliotekanauki.pl/articles/242175.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Mi-24 global FEM model
photogrammetry
3D scanning
reverse engineering
FEM
Opis:: Air structures like Mi-24 were designed in last decades of the XX century, when computer aided design was not available. Philosophy of the exploitation so-called "safe life" postulate exploitation is defined by the manufacturer time. Such attitude turned out very uneconomical because of the various profiles of the use of aircrafts. Extending the initial period of exploitation is a quite common way to extend an aircrafts' life. Such solutions are accepted in the majority of countries, even the richest. In order to obtain detailed geometry of the real structure reversed engineering techniques were used. The geometry was obtained using two methods: digital photogrammetry and optical scanning using ATOS scanner from GOM Company. Geometric model, which was used for numerical Finite Element Method model, was developed based on the data from measurements, available technical documentation and detailed inspection of the structure. Global FEM model is being used for finding critical elements of aircraft's structure. Structure elements such as stringers, ribs or frames were modelled using bar and beam elements with specially defined properties and cross sections. Structure elements which didn't take part in transferring the loads, but with significant mass were made in a simplified manner so that their weight in the model correspond to actual or were modelled as concentrated masses.
Źródło:: Journal of KONES; 2011, 18, 2; 137-144
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 9.

Tytuł:: Numerical model of fricional damper for glas – making robot lance
Autorzy:: Stembalski, M.
Skoczyński, W.
Roszkowski, A.
Powiązania:: https://bibliotekanauki.pl/articles/247991.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: robot
vibration damping
friction damper
numerical model
damping decrement
Opis:: The need to design a friction damper for glass-making robots arose because of the excessive vibrations, which occur in the course of their work. The robots are commonly used in the manufacture of glassware. The vibrations adversely affect the work of ball gatherers, which results in a large number of defects in the finished glass products. As a result of the vibrations molten glass may become unevenly distributed on the ball's surface and as the material flows down the ball into the mould the thermal conditions of its solidification may change. It is proposed to damp the vibrations by means of a prototype friction damper mounted directly on the ball gatherer lance. The glass-making robot lance with the friction damper was modelled. The vibrations of the glass-making robot lance tip under static load and impact excitation were measured during simulations. Also the relative displacements of the damper rings in the course of the excitations were measured. Moreover, the dependence between the preload force and the system's damping decrement was determined. The main aim was to select proper operating parameters for the proposed structure in order to obtain maximum system damping.
Źródło:: Journal of KONES; 2012, 19, 1; 391-398
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 10.

Tytuł:: The model of vertical acceleration impact on backbone of member of the crew
Autorzy:: Michalczyk, M.
Szcześniak, K.
Powiązania:: https://bibliotekanauki.pl/articles/244530.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: blast tests
vertical acceleration impact model
anthropomorphic test dummy
Opis:: This paper presents procedure methodology allowing to evaluate the impact of vertical acceleration (mine detonation under the vehicle) for damages of backbone of the crew member This problem is presented globally with stress on model being the estimator of the backbone damages. Then this study includes standard requirements in this field and discusses the necessary instrumentation and then method for development of model input data is indicated. the vertical impact model is presented on example. The mechanisms allowing to evaluate the level of potential injuries are presented in the final part in this paper. The range of problems concerning metrology of physical values associating explosion and evaluation of its impact on the human body is very wide. Problems discussed in this paper do not exhaust this field. The research are under way on several topics for their more full recognition. Development of this field will be correctly used, having in mind the aspect and usefulness of such research. The main criterion for evaluation of explosion impact on people protected by armour of the vehicle is the measurement of physical and mechanical values occurring during explosion. The high accelerations and pressures constitute serious danger for health and life of people. Tests are necessary to determine effectiveness of the crew's protection both in vehicles and in other objects.
Źródło:: Journal of KONES; 2011, 18, 1; 351-358
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 11.

Tytuł:: Application of the rans flow model for the analysis of the motion of floating objects in waves
Autorzy:: Kraskowski, M.
Powiązania:: https://bibliotekanauki.pl/articles/248052.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: computational fluid dynamics (CFD)
ship
drilling platform
mooring
model tests
Opis:: The present paper describes a proposal of the method for simulating the motion of freely floating and moored objects in waves, based on the RANS (Reynolds Averaged Navier-Stokes Equations) flow model. Attempts on using this model for simulating the floating body dynamic started quite recently due to its large requirements for the computer power. Only in the past few years such analyses became more common, however, no unique approach can be observed due to large variety of existing possibilities, numerical methods etc. The paper includes the description of the proposed method, which consists in mesh generation technique, efficient wave generation method, and the mooring system module, as well as two samples of marine applications: analyses of the motion of fishing vessel in head waves and the motion of moored semi-submersible drilling platform. The results were verified basing on the towing tank experiments, conducted by Centrum Techniki Okrętowej (Ship Design and Research Centre) S.A. Generating the waves by prescribed wave motion on both ends of the domain, generating the waves by prescribed wave motion and suppressing them in the damping zone, sliding mesh example, mooring system scheme, forcedisplacement characteristics of the mooring chain, fishing vessel in head waves, heave motion history, outline of the semi-submersible are presented.
Źródło:: Journal of KONES; 2012, 19, 1; 199-206
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 12.

Tytuł:: Giving prognosis for the chosen features of the operation and maintenance system based on model investigations
Autorzy:: Woropay, M.
Landowski, B.
Powiązania:: https://bibliotekanauki.pl/articles/245348.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: Perczyński, D.
Markov's model
maintenance process
forecasting
urban public
Opis:: The paper deals with the chosen issues related to modelling, giving prognosis and controlling maintenance process of a certain class of the technical objects being realized in a complex maintenance system. Supporting a decision maker in the decision making process related to the analysed maintenance system is to forecast behaviour of the maintenance system and evaluate influence of the chosen decision making variants on the maintenance process course. The object of the investigation, being the basis to illustrate the considerations presented herein, is an urban bus maintenance system in a selected urban agglomeration. The purpose of the paper is to present a possibility to use the Markov 's model of the technical object maintenance process to preliminarily forecast the maintenance system state after changing the model input parameter values. The change of the model input parameter values may simulate influence of the internal and external factors on the system behaviour. The presented method to model and forecast a maintenance system due to the assumed generalization degree of the description and the system approach to the problem may be used to forecast and analyse a maintenance process being carried out in other maintenance systems than the one in an urban bus transport system.
Źródło:: Journal of KONES; 2009, 16, 4; 513-520
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 13.

Tytuł:: Model testing of stabilising and tracking control system in main battle tank
Autorzy:: Papliński, K. M.
Powiązania:: https://bibliotekanauki.pl/articles/242585.pdf
Data publikacji:: 2015
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: main battle tank
stabilising and tracking control system
tank gun stabiliser
model testing
Opis:: The subject of discussion is a tank gun stabiliser (in azimuth and elevation). For the investigation of the considered control system one applied a method of computer simulations. The mathematical model and its numerical implementation were experimentally verified. The results of experimental and model simulation investigations showed that the mathematical model and its numerical implementation were worked-out correctly. Using the verified mathematical model of the system, the simulation investigations of the influence of regulation potentiometers settlings on stabilisation exactness and transient processes quality were carried-out. The possibilities of improving performance characteristics of the stabiliser via altering of feedback’s gain coefficients as well as the influence of disturbing inputs amplitude and frequency (propagated from the hull on the gun and turret) on stabilisation exactness of a given position were also analysed. The presented technique is quite general and may be applied to any type of vehicle to study dynamic effects of several rigid bodies, which move relative to each other (when displacements are small) and are connected by constraint equations.
Źródło:: Journal of KONES; 2015, 22, 4; 221-226
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 14.

Tytuł:: Markovs model of means of transport operation and maintenance in a city transport system
Autorzy:: Woropay, M.
Migawa, K.
Wdzięczny, A.
Powiązania:: https://bibliotekanauki.pl/articles/245783.pdf
Data publikacji:: 2009
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: city transport system
operation and maintenance process
Markov's model
Opis:: The paper deals with an analysis and mathematical model of means of transport operation and maintenance. The considerations are based on a selected real transport means system - city bus transport system in a chosen agglomeration. The model has been built on the basis of a real city transport system involving realization of the process of operation and maintenance of means of transport. For this purpose, the process significant states and possible transitions between theses states have been determined. On this basis, an event model of means of transport operational use process was built, and next its mathematical model was made, with the assumption of its being the homogenous Markov 's model. Means of transport values of boundary probabilities for their being in the process particular states, were determined for data concerning their operational use. This serves as the basis for an analysis of the studied process of operational use. The presented Markov's model of the means of transport operational use process is the effect of accomplishmen of the first stage of the resultant model (semi-Markov's model) of operational use. The resultant model will be a part of a wide scale, decision model for creation and assessment of the transport system being ready for operation.
Źródło:: Journal of KONES; 2009, 16, 3; 511-516
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Skocz do pozycji: 15.

Tytuł:: Simulation model for testing wheleed armour fighting vehicle
Model symulacyjny do badań kołowego wozu bojowgo
Autorzy:: Simiński, P.
Zając, M.
Powiązania:: https://bibliotekanauki.pl/articles/243534.pdf
Data publikacji:: 2008
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: badania symulacyjne
multibody systems
opancerzony wóz bojowy
simulation tests
AFV
Opis:: Experimental research studies of vehicles are of high cognitive importance. However, they are expensive, time-consuming and sometimes dangerous, especially when they refer to edge safety parameters of a vehicle motion. Their scope can be limited if researchers conducting the studies have at their disposal a mathematical model of the vehicle motion and dynamics and a simulation program allowing for carrying out research in „virtual space." A start-up of the simulation process requires gathering a relevant and require amount of data. If the simulation research studies that have been conducted are used for experimental verification, it is essential to obtain them to carry out a „package" of a series of experiments and a detailed design documentation analysis. Such a proceeding has been conducted with reference to research and development project of Ministry of Science and Higher Education (MNiSzW) No. R0000502. As part of its implementation, a model has inter alia been constructed using a multi-body-system class of software. The model has also gone through its experimental verification process basing on a test of a double change of traffic lane recommended by ISO standards. Developed simulation model of vehicle became to a considerable degree parameterized, this means that it allows to change of the values of the defined parameter in the options ..Parameters" - in the main model window. As a result of performed initial simulations computer basing on the above simplifying results assumptions, that model reflects real object in the certain range, however requires a further development looking for a fuller model verification in aspect of the particular values obtained in real measurements, that will be continued in the later stages of work. Additionally, for the purpose of the presentation of the work first stage results to ,,the media", computer visualization of the vehicle movement was made in the form of *.avi files.
Badania eksperymentalne pojazdów mają bardzo duże znaczenie poznawcze. Są jednak drogie, czasochłonne i niekiedy niebezpieczne, szczególnie jeśli dotyczą granicznych parametrów bezpieczeństwa ruchu pojazdu. Ich zakres może być ograniczony, jeżeli prowadzący badania dysponuje modelem matematycznym ruchu i dynamiki pojazdu oraz programem symulacyjnym umożliwiającym prowadzenie badań w „przestrzeni wirtualnej". Uruchomienie procesu symulacji wymaga zgromadzenia odpowiednie, wymaganej ilości danych. Jeśli prowadzone badania symulacyjne będą wykorzystywane do weryfikacji eksperymentalnej, do ich pozyskania niezbędne jest przeprowadzenie „pakietu" szeregu eksperymentów oraz szczegółowej analizy dokumentacji konstrukcyjnej. Takie postępowanie zostało przeprowadzono w związku z projektem badawczo-rozwojowemu MNiSzW nr R0000502. W ramach jego realizacji zbudowano, między innymi, model z wykorzystaniem oprogramowania klasy multi body system. Model tez został poddany procesowi weryfikacji eksperymentalnej bazując na teście podwójnej zmiany pasa ruchu zalecanym przez unormowania ISO. Opracowany model symulacyjny pojazdu został w znacznym stopniu sparametryzowany, to znaczy umożliwia zmianę wartości określonego parametru w opcjach „Parameters" - w oknie głównym modelu. W wyniku przeprowadzonych wstępnych symulacji komputerowych bazujących na ww. założeniach upraszczających wynika, iż model odzwierciedla w pewnym zakresie obiekt rzeczywisty, nie mniej jednak wymaga dalszego dopracowania pod kątem pełniejszej weryfikacji w aspekcie uzyskanych podczas pomiarów określonych wartości, co będzie kontynuowane w dalszych etapach pracy. Dodatkowo, w celu „medialnej" prezentacji wyników I etapu, dokonano komputerowej wizualizacji ruchu pojazdu w postaci plików *.avi.
Źródło:: Journal of KONES; 2008, 15, 3; 479-486
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

Artykuł

Zmień widok

na półce

Informacja

Wyszukujesz frazę "M model" wg kryterium: Wszystkie pola

Źródło danych

Dostawca treści

Kolekcja

Rok wydania

Wydawca

Temat

Autor

Typ dokumentu

Język