Design the structure of the vehicle system for overturning prevention and set up the system dynamic model. Based on the Matlab/Simulink, establish the dynamic simulation system of the vehicle system for overturning prevention for the Chery A3 car. Using the brake / drive integrated ESP control principle, based on the simulation model, respectively simulate and analyze the ESP control performances of the vehicle system and the vehicle system for overturning prevention on different simulation conditions. The study results indicate that when there is no ESP control or ESP control system failure, the vehicle system for overturning prevention can simulate the ESP control performances of the vehicle system effectively, the ESP control performances of the vehicle system and the vehicle system for overturning prevention have remarkable consistency. The theory of the vehicle system for overturning prevention for the ESP control performances test provides a basis for the vehicle stability control performance research.
This paper proposes an active braking control dynamical system in order to establish a safe and efficient vehicle driving stability control test system. Aiming at Chery A3 sedan, set up the active braking control dynamic simulation system base on MATLAB/Simulink. Adopting the brake driving integration ESP control strategy, analyze and verify the stability control performance of independent vehicle system and vehicle ESP test system based on active braking control respectively in under steering and excessive steering two test conditions. The analyzing results indicate that the test system based on active braking control can effectively assist vehicle travelling in the absence of ESP control or ESP control system failure; when vehicle has ESP control system, the driving stability control performance of this system and independent vehicle system has remarkable consistency. The active braking control system provides a basis for research of vehicle driving stability control test.
Project the structure of the yaw elastic restriction vehicle system, and set up the system dynamic model. Establish yaw elastic restriction vehicle dynamics simulation system based on Matlab/Simulink aimed at Chery A3 sedan. Adopting the brake driving integration ESP control strategy, analyze and verify the stability control performance of independent vehicle systems and yaw elastic restriction vehicle system respectively in neutral steer, understeer and oversteer three test conditions. The results of the study show that the stability control performance of yaw elastic restriction vehicle system and independent vehicle systems has remarkable consistency. This provides a basis for vehicle driving stability control test.
This paper sets up high energy regenerative braking and driving integrated system for electric vehicle and its dynamic model based on the wheel hub motor and friction brake integrated into electric vehicle braking system. Bend EBD hierarchical strategy of control is put forward, which is based on ABS system. Establish dynamic simulation system of electric vehicle integrated brake system and EBD control simulation system based on the Matlab /Simulink. Based on CheryA3 model car, the wheel hub motor drive system replaces the power system; carry out simulation and analyze the control performance of the integrated braking system during cornering braking. The results show that the bend EBD control performance of high energy regenerative braking/driving integrated system for electric vehicle is good, which has a high braking energy recovery rate, braking efficiency and braking stability.
Project the lateral restricted vehicle system to establish a safe and efficient vehicle driving stability control test system. Aimed at Chery A3 car, based on Matlab/Simulink, establish the lateral restricted vehicle dynamic simulation system. Used the braking and driving integrated ESP control strategy, separately analyze the ESP control performances of the independent vehicle system and the lateral restricted vehicle system on three test conditions including neutral steering, under steering, over steering. The research results indicate that the ESP control performances of the lateral restricted vehicle system and the independent vehicle system have great uniformity on the three test conditions, provide a basis for the vehicle driving stability control test research.
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