Browse Publications Technical Papers 2019-01-0436
2019-04-02

Research on the Driving Stability Control System of the Dual-Motor Drive Electric Vehicle 2019-01-0436

In order to improve the steering stability of the dual-motor drive electric vehicle, Taking the yaw rate and the sideslip angle as the control variables, Using the improved two degree of freedom linear dynamic model and seven degree of freedom nonlinear vehicle dynamics model, The hierarchical structure is used to establish the dual-motor drive electric vehicle steering stability control strategy which consist of the upper direct yaw moment decision-making layer based on the sliding mode controller and the lower additional yaw moment distribution layer based on the optimization theory. The Matlab/Simulink-Carsim joint simulation platform was built. The control strategy proposed in this paper was simulated and verified under the snake test condition and double-line shift test condition. The results show that the proposed control strategy can ensure the vehicle yaw stability, and avoid the safety problem caused by the longitudinal speed reduction when the braking force is used as the yaw moment.

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