期刊论文

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

Du, R.

中文

汽车工程

1000-680X

2019

41

3

327-333,345

10.19562/j.chinasae.qcgc.2019.03.013

国家自然科学基金(11272067) 湖南省自然科学基金(2016JJ2006)资助.

本校为第一且通讯机构

针对分布式驱动电动汽车,提出了一种复合制动系统控制策略。采用分层的制动转矩分配控制结构,上层控制器采用滑模控制策略,对目标纵向力和横摆力矩进行求解,以满足车辆在制动时制动效能和制动稳定性的要求;下层控制器采用加权最小二乘控制,对四轮液压制动转矩和电机制动转矩进行分配,通过增大电机制动力分配的权值达到能量回收的最大化,并采用有效集算法完成目标函数的求解。在此基础上,在Simulink中建立了7自由度整车动力学模型,在对开路面的工况下进行了仿真分析,结果表明:所制定的控制策略能满足要求,在保证车辆制动稳定性的同时,最大限度回收制动能量。

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...