• CN:11-2187/TH
  • ISSN:0577-6686

›› 2004, Vol. 40 ›› Issue (4): 77-80.

• 论文 • 上一篇    下一篇

电动转向控制系统跟踪性能研究

吴文江;季学武;杜彦良   

  1. 石家庄铁道学院机械工程分院;清华大学汽车安全与节能国家重点实验室;石家庄铁道学院机械工程分院
  • 发布日期:2004-04-15

DEVELOPMENT OF TRACKING PERFORMANCE FOR ELECTRIC POWER STEERING CONTROL SYSTEM

Wu Wenjiang;Ji Xuewu;Du Yanliang   

  1. School of Mechanical Engineering, Shijiazhuang Railway Institute State key Laboratory of Automotive Safety and Energy Conservation,Tsinghua University School of Mechanical Engineering, Shijiazhuang Railway Institute
  • Published:2004-04-15

摘要: 电动转向系统依靠助力电动机实现转向助力,控制系统的跟踪性能是影响电动转向系统助力性能的重要因素,较差的跟踪性能将会产生转向助力滞后现象,使驾驶路感变差。助力转矩偏差直接影响到转向系统的跟踪性能,影响助力转矩偏差的因素有转向盘输入转矩和转向轴转矩测量噪声,抑制转向盘输入转矩和转向轴转矩测量噪声引起的电动机助力转矩偏差是提高电动转向系统跟踪性能的有效手段。将H¥控制理论应用于电动转向控制系统跟踪性能的研究,建立了电动转向系统数学模型,采用线性矩阵不等式处理方法设计了最优H¥控制器,应用Matlab软件进行了计算机仿真,并根据最优H¥控制器编制了电动转向系统控制程序,进行了台架试验。仿真和试验结果表明,所设计的电动转向控制系统具有较好的跟踪性能。

关键词: 跟踪性能, H¥控制器, 电动转向系统

Abstract: Electric power steering system provides assistant torque with motor. The tracking performance of control system is an important factor that affects the assistance of electric power steering system. Bad tracking performance will cause assistant delay, and make road feel to be bad. The tracking performance is directly influenced by the deviation of assistant torque. Input steering torque and the measuring noise of steering torque are factors that affect the deviation of assistant torque. Cutting down the deviation of assistant torque is an effective method to enhancing the tracking performance. H-infinity control theory is applied in the development of tracking performance. A mathematic model of electric power steering system is set up. H-infinity controller is designed with LMI. Simulation using Matalab and computer program based on H-infinity controller are developed. A bench test is finished. The results prove that electric power steering has a good tracking performance.

Key words: controller, Electric power steering, Tracking performance

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