摘要
电动助力转向系统实际上存在着系统参数变化、路面干扰等不确定性因素,传统的PID控制方法只能在特定的系统参数情况下基本满足控制要求,无法处理系统的不确定性.针对这一问题,采用指数趋近律方法设计了滑模变结构控制器.仿真结果表明,滑模变结构控制方法具有较好的稳态性能和动态性能,而且其滑动模态对系统参数的摄动具有完全的自适应性,可以对电动助力转向系统实现鲁棒控制.
Actually there are many uncertain factors including a variety of system parameters and the road surface disturbance,so a PID controller only is used suitably when the system parameters are certain.A sliding mode variable structure controller is proposed for it.Simulation shows that the controller has steady and dynamic performance,and its sliding mode has an absolute self-adaptation,so the sliding mode controller can be used to robust control for electric power steering system.
出处
《山东理工大学学报(自然科学版)》
CAS
2010年第2期71-73,共3页
Journal of Shandong University of Technology:Natural Science Edition
基金
山东省自然科学基金资助项目(2003ZX15)
山东省教育厅项目(JB06B06)
关键词
电动助力转向
滑模变结构控制
指数趋近律
electric power steering system
sliding mode variable structure control
exponential approach law