乘用车电动助力转向系统建模与设计  

Modeling and Design of Electric Power Steering System of A Light Duty Vehicle

作　　者：王慧君[1,2] 李幼德[1] 

机构地区：[1]吉林大学 [2]大众一汽平台零部件有限公司

出　　处：《汽车技术》2011年第4期30-33,37,共5页Automobile Technology

基　　金：国家"863"国家高技术研究发展计划项目(2006AA110103)

摘　　要：提出了汽车电动助力转向系统的控制目标,并分析总结出不同工况下的控制策略。建立了电动助力转向系统模型,结合电动助力转向系统特性设计了带有串联校正的PID控制器。通过在助力控制策略下的仿真,验证了助力特性、校正方案和转向盘转角估算算法的正确性。试验结果表明,系统实际助力特性与理想助力特性之间基本一致。The objective of electric power steering system control is presented,and control strategy under different working conditions are analyzed and summarized.An electric power steering system model is established in the paper,and a PIC controller with series correction is designed based on characteristic of electric power steering system.By simulation in the power steering strategy,power steering characteristic,correction program and algorithm of steering wheel angle estimation is validated.The test results show that the actual power steering characteristic of the system basically agrees with ideal power steering characteristic.

关 键 词：电动助力转向系统 PID 控制 校正 

分 类 号：U463.4[机械工程—车辆工程]