Sliding Mode Control Algorithm for Regenerative Braking of an Electric Bus with a Pneumatic Anti-lock Braking System

4th International Conference on Manufacturing, Material and Metallurgical Engineering

Zhao, Yiming^1 ; Zhang, Junzhi^1^2 ; Li, Chao^1 ; He, Chengkun^1

State Key Laboratory of Automotive Safety and Energy, Tsinghua University, Beijing, China^1

Innovation Center of Electric Vehicles, Beijing, China^2

关键词: Anti-lock braking systems (ABS);    Co-operative control;    Electric bus;    Emergency stop;    Friction braking;    MATLAB/Simulink environment;    Regenerative braking systems;    Stopping distance;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/538/1/012067/pdf
DOI  :  10.1088/1757-899X/538/1/012067

来源: IOP

【 摘 要 】

Equipped with regenerative braking system, electric vehicles have the function of coordinating regenerative braking and friction braking simultaneously in normal braking situations. However, the usual operation is withdrawing the regenerative braking when the anti-lock braking system (ABS) is triggered. In order to make full use of regenerative braking, this article focuses on the cooperative control between the regenerative braking and the pneumatic friction braking during emergency stops. A sliding mode control (SMC) algorithm for regenerative braking is proposed to control the electric motor and help improve the braking performance and braking comfort. The proposed control algorithm is validated in the MATLAB/Simulink environment. A maximum mean deceleration of 25.3% is achieved and the stopping distance is shortened by 13.2m comparing to the pure pneumatic ABS on the wet gravel road, which verifies the feasibility and effectiveness of the developed control algorithm greatly.