磁流变减振器的外特性及非线性特性  

External and Nonlinear Characteristics of Magnetorheological Damper

作　　者：王靖岳[1] 郭胜[1] 王浩天 

机构地区：[1]沈阳理工大学汽车与交通学院,沈阳110159 [2]沈阳航空航天大学自动化学院,沈阳110136

出　　处：《科学技术与工程》2017年第34期332-336,共5页Science Technology and Engineering

基　　金：辽宁省教育厅科技研究项目(L2012068);辽宁省自然科学基金(20170540786);中国博士后科学基金(2017M610496)资助

摘　　要：为了更好地研究控制磁流变减振器的运动状态,运用MTS849减振器试验台测试的试验数据来探究电流和活塞运动速度对磁流变减振器外特性的影响。考虑到磁流变阻尼力非线性的特性,运用Lab VIEW软件设计出了多项式的程序框图和前面板,并进行了磁流变减振器阻尼力的多项式拟合仿真,准确地建立了多项式数学模型,并与利用MATLAB软件建立的多项式模型和试验台测试的数据相比较。结果表明:当速度一定时,随着控制电流的增加,减振器阻尼力也随着增加,电流较小时阻尼力增加相对较慢,电流较大时阻尼力增加相对较快;当电流一定时,减振器阻尼力随着活塞速度的增加而增加。运用LabVIEW软件拟合的多项式模型更接近试验数据曲线,说明该多项式数学模型能很好地描述磁流变减振器阻尼力的滞回特性和非线性特性。In order to study the motion state of the Magnetorheological（ MR） damper,the influence of the current and the piston velocity on the external characteristics of the MR damper is investigated by using the test data of the MTS849 damper test bench. Considering the nonlinear characteristics of magnetorheological damping force,Using Lab VIEW software to design the program diagram of the polynomial and the front panel,and the damping force of MR damper polynomial fitting simulation,accurate polynomial mathematical model is established,and in comparison with the use of MATLAB software to establish a polynomial model and the data of test bench test. The results show that when the speed is constant,the damping force increases with the increase of the control current.The damping force increases relatively slowly when the current is small,and the damping force increases rapidly when the current is larger. When the current is constant,the damping force increases with the increase of piston speed. The polynomial model fitted by LabVIEW software is more close to the experimental data curve,which shows that the polynomial mathematical model can well describe the hysteretic and nonlinear characteristics of the damping force of the MR damper.

关 键 词：磁流变阻尼器 LABVIEW 多项式模型 滞回特性 非线性 

分 类 号：U461.4[机械工程—车辆工程]