Bai Zhifeng1,Zhang Chuanwei1,Li Shuxin1,Lin Jiarang2,Cao Binggang1
(1.School of Mechanical Engineering,Xi'an Jiaotong University,Xi'an 710049, China;2.School of Energy and Power Engineering,Xi'an Jiaotong University,Xi'an 710049,China)
Abstract:The H¡Þ robust controllers for driving and regenerative braking of electric vehicle (EV)is proposed£®To ensure the robustness of the closed-loop system under the presence of uncertainties£¬such as parameter perturbation and unknown model dynamics£¬and to minimize the effects of disturbances£¬ such as the variation of the voltage of battery£¬state of the road£¬and the driving profile of vehicle£¬the design of controllers for driving and regenerative braking of EV are transformed into the weighted mixed-sensitivity problem,The experimental results with different road states and driving modes show that H¡Þ robust controllers are superior to the traditional proportional integral(PI)controller for reducing steady-state tracking error and accelerating response rate£®Additionally the H¡Þ robust controller for regenerative braking can recover more energy than PI controller and the peak recovery increases by 40£¥ during the EV braking£®
Keywords:electric vehicle;driving control;regenerative braking; H¡Þ robust control