【摘要】 针对混合动力汽车发动机参与工作模式下附着系数分离路面起步或低速行驶,防止产生更大的附加横摆力矩而影响车辆的稳定性,提出基于多目标动态协调的发动机电机液压制动协调控制策略。根据混合动力车辆多动力源的特点,搭建车辆驱动轮在该工况下的受力模型,基于逆模型的液压制动力矩控制算法和发动机目标转矩设计算法,制定所研究控制策略。基于Simulink仿真分析了混合动力汽车控制系统进入发动机电机液压制动协调控制策略时在不同工况下的仿真结果。结果可知采取这种电控策略能够提高车辆的加速性能,更加有效地抑制低附着侧驱动轮打滑。为了验证提出的这种控制策略对实际执行系统的有效性,采取了试验验证的方法搭建了试验平台,通过仿真分析和试验数据的对比,证明了所提出控制策略的合理性和有效性。更多还原

【Abstract】 To the hybrid electric vehicle in the adhesion coefficient road to start or in low speed under engine participation mode,prevent the generation of a greater additional yaw moment and affect the stability of the vehicle,coordinated control strategy of engine and motor unit hydraulic brake based on multi-target dynamic coordinate control is proposed. According to the characteristics of the hybrid vehicle,the force model of the vehicle driving wheel was built,and the control strategy was formulated based on the inverse model of the hydraulic brake torque control algorithm and the engine target torque design.Based on Simulink simulation,the simulation results of hybrid electric vehicle control system in the hydraulic brake coordination control strategy of the engine were analyzed. The results show that this method can improve the vehicle’s acceleration performance,and more effectively inhibit the low adhesion side drive wheel slip. In order to verify the validity of the proposed control strategy to the actual execution system,the experimental platform was built up. Through simulation analysis and comparison of experimental data,the rationality and effectiveness of the proposed hybrid electric vehicle multitarget dynamic coordination of engine hydraulic motor control strategy is proved.更多还原