MR阻尼器控制与滞环特性相分离的F-v模型  

MR-DAMPER F-v MODEL DECOUPLING CONTROL AND HYSTERESIS PROPERTIES

作　　者：王恩荣[1] 陈余寿[1] 马晓青[2] 苏春翌[2] Rakheja Subhash 

机构地区：[1]南京师范大学电气与自动化工程学院,南京210042 [2]康考迪亚大学机械与工业工程系

出　　处：《机械工程学报》2005年第7期186-191,共6页Journal of Mechanical Engineering

基　　金：国家留学基金委'高访项目'(20H05002)江苏省高校自然科学研究基金(03KJB510072)资助项目

摘　　要：提出了一种基于对称和不对称Sigmoid函数,描述半主动可控磁流变液(MR)阻尼器阻尼力一相对速度(F-v)数学模型。该模型准确地描述了MR阻尼器非线性饱和的直流电流控制和对称滞环F-v的工作特性,以及激励频率和幅度对阻尼力的强影响特性,具有精度高和电流控制增益与滞环算子相分离的特点。将该模型与车辆悬架动力学模型结合分析,仿真结果表明MR阻尼器对实现新一代智能车辆悬架系统设计有潜在的意义,所提出的模型对进一步推动车辆悬架减振控制器设计研究有重要作用。A hysteretic force-velocity (f-v) model based on the symmetric and asymmetric sigmoid functions is proposed to characterize the semi-actively controllable magneto-rheological (MR) fluids damper. The model accurately describes the damping characteristics of the damper, involving nonlinearly saturated direct-current control, hysteretic saturation, and the strong dependence on excitation frequency and amplitude. The model has attractive features of high precision and decoupling the current control gain function and the hysteron function. By analyzing the quarter-vehicle suspension dynamic system with a MR damper, the simulation results show that the MR-damper has significant potential for achieving the new intelligent vehicle suspension design with MR dampers, and the proposed model will play an important role in improving the advanced controller synthesis for vibration attenuation.

关 键 词：磁流变液(MR)阻尼器 滞环F-v模型 车辆悬架 振动抑制 

分 类 号：TM201.4[一般工业技术—材料科学与工程] TH703.6[电气工程—电工理论与新技术]