车辆磁流变半主动悬架混合阻尼模糊电流控制研究  

Hybrid damping fuzzy current control of semi-active vehicle suspension with magnetorheological damper

作　　者：胡国良 刘前结 李刚 Hu Guoliang;Liu Qianjie;Li Gang(Key Laboratory of Conveyance and Equipment,Ministry of Education,East China Jiaotong University,Nanchang 330013,China;School of Aerospace Engineering,Xiamen University,Xiamen 361005,Fujian,China)

机构地区：[1]华东交通大学载运工具与装备教育部重点实验室,南昌330013 [2]厦门大学航空航天学院,厦门361005

出　　处：《现代制造工程》2018年第10期94-101,共8页Modern Manufacturing Engineering

基　　金：国家自然科学基金项目(51475165;11462004;51765015);江西省主要学科学术和技术带头人资助计划项目(20162BCB22019);江西省创新驱动5511科技创新人才项目(20165BCB18011)

摘　　要：基于可调Sigmoid力学模型,对磁流变阻尼器(Magnetorheological Damper,MRD)的阻尼动态特性进行辨识拟合,建立1/4车半主动磁流变悬架系统模型。在混合阻尼控制基础上,利用模糊控制器,提出一种混合阻尼模糊电流控制策略,实现对MRD等效阻尼系数的连续可调与阻尼分配系数的自动调节,增加其灵活控制性与自适应性。在此基础上,同时分别在冲击路面与随机路面激励下,将该算法与混合阻尼开关电流控制和被动控制进行仿真对比分析,结果表明所提控制策略具有更好的减振性能。The nonlinear damping characteristics of Magnetorheological Damper （MRD） were expressed with the proposed ad- justable sigmoid model to simulate its mechanical experimental results, and a quarter-car model with MRD was also established. Based on the hybrid damping control strategy, a Hybrid damping Fuzzy current Control （HFC） strategy was proposed by using fuzzy controller, which realizes the continuous adjustment of the equivalent damping coefficient of MRD and the automatic regula- ting for the damping distribution coefficient, so that it could have a better flexibility and adaptability. On the basis of the above, numerical simulations for the proposed algorithm, Hybrid damping On-off current Control （HOOC） and passive control strategy were investigated to demonstrate the effectiveness of the proposed approaches under the bump road and random road excitation. The results show that the proposed control strategy has a better damping performance.

关 键 词：磁流变阻尼器 力学模型 车辆悬架 混合阻尼模糊电流控制 减振效果 

分 类 号：U463.33[机械工程—车辆工程]