基于MATLAB_Simulin_省略_电动助力转向系统控制算法仿真研究_何字满.pdfVIP

25 4 　　　　　　 V ol.25 　No.4 20 11 12 D RIV E SY ST EM T ECHN IQU E December 20 11 　　:1006-8244 (2011)04-33-05 基于MATLAB /Simulink 的电动助力转向 系统控制算法仿真研究 A Study on the Control Algorithm of Electric Power Steering System Based on MATLAB/Simulink (1) (2) 　 (1. 　200240; 2.　201620) (1) (2) He Ziman 　Gu Mengyan (1.National Engineering Laboratory f or Automotive Electronic Control Technology,ShanghaiJ iao Tong University , Shanghai 200240; 2.Shanghai University of Engineering Science, Shanghai 201620) []简述了电动助力转向系统(EPS)的组成机构和不同控制模式下的工作原理。根据简化的 理模型, 将电动助力转向系统划分为了三 个组成部分, 并分别陈列了各 个组成部分的数学模型。针对汽车不同的行 驶工况,提出了三种不同的转向控制模式。基于电动助力转向系统的数学模型和不同控制模式, 在MA T- LAB/Simulink 中构建了控制器的仿真模型。通过追踪助力电机的目标电流,分析转向轻便性和路感, 验证 了本文施加的基本PID 和PWM 控制策略较好地协调了汽车转向时“轻”与“灵”的矛盾, 提高了汽车转向时 的操作稳定性。` [Abstract]The component of Electric Pow er Steering (EPS )y tem and the w orking principle ba ed on different control mode w ere de cribed imply .A ccording to the implified phy ical model , EPS y tem w a divided into three part .T he mathematical model of every part w ere e tabli hed eparately.Three kind of teering control mode w ere introduced for adapting different operating condition .On the ba i of mathematical model and different control mode of EPS y tem, the imulation model of the controller w a built in MA T LA B/Simulink.Through tracking the target current of the a i t motor and analyzing the teering agility and r oad feel, it i verified that the control trategie of PID and PW M propo ed in thi pa- per can regulate conflict betw een road feel and teering agility w hen the vehicle i teering, and the ma- neuverability and tability are both improved eff