MPC-based cooperative braking control for rear-wheel-drive electric vehicle

With the aim of regeneration efficiency and braking effect, this paper focuses on cooperative control of regenerative braking and hydraulic braking for rear-wheel-drive electric vehicle (EV), and designs a model predictive controller to maintain the slip ratio within an optimal range by adjusting the braking torque continuously. Besides, a new braking torque allocation strategy is put forward in view of energy regeneration and the comfort of operation. In these regards, the proposed controller guarantees the optimal braking torque on each wheel by individually controlling the slip ratio of each tire within the stable zone. The control effects and regeneration efficiency of the control strategies in a typical deceleration process are simulated and analysed. Theoretical analyses and simulation show that the proposed controller and allocation strategy are effective for better braking performance.