采用模型预测控制的车辆主动悬架振动研究  

Vibration of Vehicle Active Suspension by Model Predictive Control

作　　者：谭志银[1] 杨思国[1] TAN Zhi-yin;YANG Si-guo(College of Electrical Engineering,Chuzhou Vocational and Technical College,Chuzhou,Anhui 239000,China)

机构地区：[1]滁州职业技术学院电气工程学院,安徽滁州239000

出　　处：《河北北方学院学报（自然科学版）》2022年第9期33-37,共5页Journal of Hebei North University:Natural Science Edition

基　　金：安徽省高校自然科学重点研究项目(KJ2019A1130);滁州职业技术学院专业带头人项目(ZD2019013)。

摘　　要：为了改善车辆经过障碍物的稳定性,提高车辆乘坐的舒适性,设计了模型预测控制方法。创建了车辆1/4模型简图,给出了车辆运动数学模型,并对车辆执行器道路系统模型进行简化。定义了车辆运动初始状态,设计了车辆主动悬架模型预测控制系统,并对主动悬架系统目标函数进行了约束。利用MATLAB软件对车辆垂直加速度、纵向和横向角加速度进行仿真,与被动悬架系统进行对比和分析。仿真结果表明,车辆受到路面激励波形干扰时,采用被动悬架系统,车辆垂直加速度、纵向和横向角加速度较大,导致车辆振动幅度较大;而采用主动悬架模型预测控制方法,车辆垂直加速度、纵向和横向角加速度较小,车辆振动幅度较小。采用该控制方法能够降低车辆经过障碍物时的振动幅度,改善车辆乘坐的舒适性。To improve the stability of vehicles passing through obstacles and improve the comfort of vehicles,a model predictive control method was designed.The 1/4 model diagram of vehicle was created,the mathematical model of vehicle motion was given,and the road system model of vehicle actuator was simplified.The initial state of vehicle motion was defined,the model predictive control system of vehicle active suspension was designed,and the objective function of active suspension system was constrained.The vehicle vertical acceleration,longitudinal and transverse angular acceleration were simulated by MATLAB software,which was compared and analyzed with the passive suspension system.The simulation results showed that when the vehicle was disturbed by the road excitation waveform by the passive suspension system,the vehicle vertical acceleration,longitudinal and transverse angular acceleration were large,resulting in a large amplitude of vehicle vibration;with the active suspension model predictive control method,the vehicle vertical acceleration,longitudinal and transverse angular acceleration were small,and the vehicle vibration amplitude was small.This control method can reduce the vibration amplitude when the vehicle passes through obstacles and improve the ride comfort of the vehicle.

关 键 词：车辆 主动悬架 模型预测控制 加速度 振动 

分 类 号：TH113[机械工程—机械设计及理论]