补偿转向盘振动力矩的控制策略研究  

Research on Compensation of Steering Vibration of Electric Power Steering System

作　　者：孙运全[1] 李亚杰[1] 张蕴昕 

机构地区：[1]江苏大学电气信息工程学院,江苏镇江212013

出　　处：《计算机测量与控制》2015年第4期1179-1181,1208,共4页Computer Measurement &Control

基　　金：中国博士后科学基金资助项目(20110491358);江苏大学高级人才项目(13DG054)

摘　　要：在Matlab/Simulink中建立了电动助力转向系统动力学模型,根据路感信息与不平路面引起的振动干扰在频率上的区别,经过高通滤波检测出路面不平整产生的转向系统干扰力矩,通过助力电机提供相反大小的力矩对其进行补偿;针对路感信息与路面振动干扰在频率上区分界限的不固定性,设计了一种在线可调节滤波器截止频率的控制方法,避免对车辆路感信息正常传递的影响;仿真结果表明,所设计的补偿控制策略能够有效衰减不平路面干扰力矩到方向盘的传递。A car steering dynamic model with EPS is built in Matlab/Simulink. In order to compensate steering vibration associated with disturbance from road wheels, The same torque in the opposite direction is provided by power motor, without influencing road information considering the difference in frequency. Since the boundaries in frequency are not fixed, a method is devised to adjust cut--off frequency of HPF on--line. The simulation results show that the proposed control algorithm can reduce steering vibration associated with disturbance from unpaved roads without influencing the road information.

关 键 词：电动助力转向系统 路面不平度 振动 补偿控制 高通滤波 截止频率 

分 类 号：U463.4[机械工程—车辆工程]