基于滑模变结构的转向控制器优化设计及研究

Optimal design and research of steering controller based on synovium variable structure mode

为了提高汽车电动助力转向系统(EPS)的瞬时响应速度及抗干扰能力,基于滑膜变结构模式建立EPS控制器。通过在Carsim中建立整车模型和在Simulink中建立控制器模型,并且进行联合仿真,对3种不同类型控制模式的动态特性曲线进行对比。仿真结果表明,滑模变结构控制下的转向系统响应速度、抗干扰能力以及鲁棒性更好,操纵稳定性比传统控制器提高15%。

For the purpose of improving the instantaneous response speed and anti-jamming ability of Electric Power Steering(EPS),EPS controller is established based on the synovium variable structure mode.By establishing the vehicle model in Carsim and the controller model in Simulink,and carrying out co-simulation,then a comparison of the dynamic characteristic curves of three different types of control modes is carried out.The simulation results show that the steering system under synovium variable structure control has better response speed,anti-interference ability and robustness,and the steering stability is increased by 15%compared with the traditional controller.