磁流变半主动悬架变负载MRAC控制  

MRAC of magnetorheological semi-active suspension with variable loads

作　　者：胡国良 方冰 喻理梵 张佳伟 朱文才 HU Guoliang;FANG Bing;YU Lifan;ZHANG Jiawei;ZHU Wencai(School of Mechatronics and Vehicle Engineering,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学机电与车辆工程学院,江西南昌330013

出　　处：《南昌工程学院学报》2024年第4期21-27,共7页Journal of Nanchang Institute of Technology

基　　金：国家自然科学基金项目(52165004);江西省国际科技合作重点项目(20232BBH80010)。

摘　　要：针对车辆负载变化影响车辆综合性能的不确定性问题,建立了包含负载力的1/4车辆半主动悬架数学模型。选用磁流变阻尼器作为半主动部件,采用模型参考自适应控制(MRAC)衰减振动,运用李雅普诺夫定理证明了该系统的稳定性。以车身加速度、悬架动行程和轮胎动载荷的均方根值为评价指标,进行了变负载工况下的仿真分析。结果表明,在随机路面激励下,基于MRAC的磁流变半主动悬架在空载、负载1 kN和负载2 kN的情况下,悬架的3个性能指标与被动悬架相比均得到明显优化。In response to the uncertainty problem of load change affecting the performance of the vehicle,a mathematical model of quarter vehicle semi-active suspension containing load force is established.Magnetorheological(MR)damper is adopted as the semi-active component,and model-referenced adaptive control(MRAC)is used to attenuate the vibration,and the stability of the system is proved by Liapunov’s theorem.The simulation analysis under variable loads was carried out using the root mean square values of body acceleration,suspension displacement and tire dynamic load as evaluation indexes.The results show that under random road excitation,the three performance indexes of the MRAC-based suspension are significantly reduced compared with the passive suspension under zero load,1kN load and 2kN load,respectively.

关 键 词：半主动悬架 磁流变阻尼器 模型参考自适应控制(MRAC) 李雅普诺夫函数 

分 类 号：TH134[机械工程—机械制造及自动化]