摘要
针对电动助力转向系统(EPS)在重型汽车中应用的问题,对重型汽车电动助力转向系统的助力控制策略作了理论分析、研究和仿真。在分析了重型汽车EPS特点的基础上,对循环球式电动助力转向系统的静态和物理硬件进行了设计及建模;提出了对重型汽车EPS使用上下两层控制结构,上层为目标电流控制,下层为助力电机控制;基于助力控制模式分别对上层控制设计了sugeno型模糊控制和惯性补偿控制策略、对下层控制设计了模糊PID复合控制策略,并在Simulink中进行了仿真验证。仿真结果表明,该控制策略能有效地解决惯性、适应性和快速性等问题,可以为重型汽车EPS的开发及应用提供理论参考。
Aiming at the application of electric power steering（EPS） in heavy vehicles, the theoretical analysis, study and simulation of the EPS power control strategy for heavy vehicles were presented. The static characteristic and the physical hardware of recirculating ball steering gear were designed and modeled on the basis of the analysis of the characteristics of heavy vehicles EPS. A two-lay structure controller was put forward on EPS of heavy vehicles, including the target current control and power motor control. The sugeno-fuzzy control, inertia compensation and fuzzy PID integrated control strategy were designed respectively based on power control mode, and be verified in the Simulink. The simulation results indicate that, the problem of inertia, flexibility and rapidity of the response can be solved better, the control strategy can be as a theory of reference of EPS development and application for heavy vehicles.
出处
《机电工程》
CAS
2014年第6期740-744,共5页
Journal of Mechanical & Electrical Engineering
关键词
重型汽车
电动助力转向系统
循环球式转向器
前馈
模糊PID
heavy vehicle
electric power steering（EPS）
recirculating ball steering gear
feedforward
fuzzy PID
