车辆磁流变半主动悬架变论域模糊PID控制  

Variable universe fuzzy PID control for vehicle semi-active suspension with magnetorheological dampers

作　　者：王椿 贾磊 王国辉 杨健康 潘成 WANG Chun;JIA Lei;WANG Guohui;YANG Jiankang;PAN Cheng(School of Mechanical Engineering,Shenyang Ligong University,Shenyang 110159,China)

机构地区：[1]沈阳理工大学机械工程学院,沈阳110159

出　　处：《现代制造工程》2023年第8期59-65,共7页Modern Manufacturing Engineering

基　　金：辽宁省教育厅面上项目(LJKMZ20220602);沈阳理工大学高层次人才项目(1010147001001)。

摘　　要：在传统比例积分微分(Proportional Integral Derivative,PID)控制的基础上,考虑到论域因子的误差,设计了一种函数型的变论域模糊PID控制策略。基于1/4车辆二自由度磁流变半主动悬架系统,首先,建立了磁流变阻尼器的正、逆模型;然后,根据车辆磁流变半主动悬架系统的振动特性建立了模糊推理规则;最后,基于变论域的思想,设计了模糊论域的伸缩因子,以获得最优的控制精度。利用Matlab/Simulink软件在随机路面和正弦路面分别对车辆磁流变半主动悬架进行了仿真分析,通过车身垂直加速度、悬架动挠度以及车轮动载荷进行悬架性能评价,结果表明,与被动悬架、模糊控制和模糊PID控制相比,变论域模糊PID控制使车辆磁流变半主动悬架各性能指标均得到有效改善。On the basis of the traditional fuzzy Proportional Integral Derivative(PID)control and considering the error of the universe factor,a kind of function type fuzzy PID control strategy with variable universe was designed.Based on the 1/4 vehicle twodegree-of-freedom semi-active suspension system,firstly,the forward and inverse models of magnetorheological dampers were established.Then,the fuzzy inference rules were formulated according to the vibration characteristics of the vehicle magnetorheological semi-active suspension system.Finally,based on the idea of variable universe,the scale factor of the fuzzy universe was designed to maximize the control accuracy.The simulation analysis was carried out on random road surface and sinusoidal road surface by Matlab/Simulink software respectively,and the suspension performance was evaluated by body vertical acceleration,suspension dynamic travel and wheel dynamic load.The results show that compared with passive suspension,fuzzy control and fuzzy PID control,variable universe fuzzy PID control can effectively improve the performance indexes of the suspension.

关 键 词：半主动悬架 磁流变阻尼器 变论域 模糊比例积分微分 

分 类 号：TH113.1[机械工程—机械设计及理论]