摘要
该文根据线控液压转向系统工作原理建立液压系统仿真模型,采用电液比例PID控制方法,将车轮转角目标值与方向盘输入实际值的偏差作为输入进行控制。首先利用阿克曼定理进行理论分析,得出车轮最大转角和主动轮与从动轮转动角度关系,然后通过改变方向盘输入信号的频率、车速、伺服阀频率和额定流量、比例增益,对线控转向系统动态特性进行研究分析。最后对整车转向系统动态性能进行测试,并与仿真结果进行对比,结果表明仿真模型建立是正确的,为线控转向系统优化设计和分析提供理论支持。
In this paper,according to the working principle of the hydraulic steering-by-wire system,the simulation model of hydraulic system is established,the electro-hydraulic proportional PID control method is used,using the deviation between the target value of the wheel angle and the actual value of the steering wheel as input to control.Firstly,the maximum rotation angle of the wheel and the relation between the rotation angle of the active wheel and the driven wheel are obtained by using the Ackermann analysis.Secondly,by changing the frequency of the steering wheel angle signal,the speed,the frequency and rated flow of the servo solenoiod valve,proportional gain,the dynamic characteristics of the wire-controlled steering system are studied and analyzed.Finally,the dynamic performance of the vehicle steering system is tested and compared with the simulation results,it is proved that the simulation model is correct,to provide theoretical support for the optimization design and analysis of steering system.
作者
陈成
张勇
孙占瑞
张宝海
CHEN Cheng;ZHANG Yong;SUN Zhan-ru;ZHANG Baohai(Xuzhou Construction Machinere Group Co.,Ltd.,Xuzhou 221004,China;Jiangsu XCMG Construction Machinere Institute Co.,Ltd.,Xuzhou 221004,China;State Key Laboratoiy of Intelligent Manufacturing of High-Levd Construction Machinere,Xuzhou 221004,China)
出处
《液压气动与密封》
2021年第7期4-8,共5页
Hydraulics Pneumatics & Seals
