车辆磁流变半主动悬架复合控制策略研究  

Research on compound control strategy of vehicle magnetorheological semi-active suspension

作　　者：李刚[1] 黄庆生 倪龙 周筱明 周聪辉 胡国良[1] LI Gang;HUANG Qingsheng;NI Long;ZHOU Xiaoming;ZHOU Conghui;HU Guoliang(Key Laboratory of Vehicle Intelligent Equipment and Control of Nanchang,East China Jiaotong University,Nanchang 330013,China;Yingtan Applied Engineering School,Yingtan 335000,China)

机构地区：[1]华东交通大学南昌市车辆智能装备与控制重点实验室,南昌330013 [2]鹰潭应用工程学校,鹰潭335000

出　　处：《现代制造工程》2022年第8期1-9,38,共10页Modern Manufacturing Engineering

基　　金：国家自然科学基金资助项目(51765016);江西省重点研发计划项目(20212BBE51009,20192BBEL50012)。

摘　　要：为提升复杂路况下配备磁流变半主动悬架车辆的综合隔振性能,基于开关函数提出一种复合控制策略。首先,对车辆磁流变半主动悬架系统所用磁流变阻尼器进行阻尼特性试验,使用基于Levenberg-Marquardt优化算法的最小二乘法对可调Sigmoid模型进行参数辨识;其次,以磁流变半主动悬架1/4车辆模型为研究对象,设计了一种基于线性矩阵不等式的非确定结构参数的H_(∞)控制策略;然后,基于磁流变半主动悬架1/4车辆参考模型,计算分析了基于径向基函数的滑模控制的磁流变半主动悬架的性能指标;最后,利用开关函数复合以上2种控制方式,研究表明,复合控制策略能够提升车辆的行驶可靠性和操纵稳定性,综合性能指标优化率为5.93%。To improve vibration isolation performance of the vehicle with magnetorheological semi-active suspension under complex road conditions,based on switch function a compound control strategy was put forward.First of all,damping characteristics of magnetorheological damper used in magnetorheological semi-active suspension system of vehicle was tested,least square method based on Levenberg-Marquardt optimization algorithm was used for adjustable Sigmoid model parameters identification.Second,with magnetorheological semi-active suspension 1/4 vehicle model as the research object,a kind of uncertain structural parameters based on Linear Matrix Inequality(LMI)of H_(∞) control strategy was designed;then,based on magnetorheological semi-active suspension 1/4 vehicle reference model,magnetorheological semi-active suspension performance indicators were calculated and analyzed based on radial basis function-sliding mode control;finally,the above two kinds of control mode were combined with switching function,research show that,hybrid control strategy can improve the motion reliability and stability of the vehicle,comprehensive performance index optimization rate was 5.93%.

关 键 词：磁流变半主动悬架 磁流变阻尼器 参数辨识 

分 类 号：U463.33[机械工程—车辆工程]