分布式驱动电动汽车复合制动系统转矩分配控制策略仿真*

doi:10.19562/j.chinasae.qcgc.2019.03.013

Abstract

Abstract: Aiming at a distributed drive electric vehicle, a control strategy for compound brake system is proposed in this paper. A hierarchical braking torque allocation control structure is adopted, in which the upper controller uses the sliding mode control strategy to solve out the target longitudinal force and yaw moment for meeting the requirements of braking efficacy and stability. The lower controller allocates the hydraulic braking torque of four wheels and the motor braking torque with weighted least square control, maximizes energy recovery by increasing the weight of motor braking force allocation and solves the objective function by using effective set algorithm. On this basis, a seven-DOF vehicle dynamics model is established with Simulink, and a simulation is carried out under the condition of butted-joint road. The results show that the control strategy proposed can meet the requirements, maximizing the recovery of braking energy while ensuring the braking stability of vehicle

Key words: distributed drive electric vehicle, compound brake system, torque distribution, braking stability

Du Ronghua, Mi Siyu, Hu Lin & Meng Can. Simulation on Control Strategy for Torque Distribution of Compound Brake System in a Distributed Drive Electric Vehicle[J]., 2019, 41(3): 327-333.

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Simulation on Control Strategy for Torque Distribution of Compound Brake System in a Distributed Drive Electric Vehicle

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