| Autor: |
Sidorov, M. V., Karpov, M. A., Kalimullin, M. N., Barykin, A. Y., Nuretdinov, D. I., Galiyev, R. M., Sokolova, V. A. |
| Předmět: |
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| Zdroj: |
AIP Conference Proceedings; 6/22/2022, Vol. 2467 Issue 1, p1-7, 7p |
| Abstrakt: |
Article discusses use of mathematical modeling of vehicle transmission in Simulink environment. Proposed approach makes it possible to reasonably select acceptable design variants at low cost. Studies of individual transmission factors influence on functional parameters of KamAZ-4308 vehicle have been carried out. Blocks have been developed for determining moment of resistance on wheels when a vehicle is moving on a supporting surface, simulating clutch operation, calculating engine torque from its speed, gear shifting and dynamic transmission model that allows determining angular speeds of crankshaft rotation of engine and car wheels. Block simulating clutch operation ensures torque transmission from engine to gearbox, allows breaking power flow at the moment of shifting and smooth increase in torque when friction discs are closed. Gearshift unit provides gear changes depending on vehicle speed. Various speed values are used when changing from increased gear to low gear and, conversely, from low gear to high gear to avoid process of self-oscillations during switching, which is caused by introducing "dead zone". Differential equations describing transmission operation are solved in a matrix way, allowing studying vehicle dynamics, taking into account inertia of engine, transmission and individual wheels of vehicle. Use of simulation modeling in Simulink environment allowed studying influence of individual transmission and engine parameters on vehicle speed. Influence research of gear ratios of gearbox on vehicle speed when driving on asphalt highway have been carried out. Results of change in external characteristics of engine on dynamic and speed indicators of vehicle are obtained. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
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