多项式模型磁流变减振器半主动悬架滑模控制  

Sliding Mode Control of Vehicle Semi-active Suspension with Magnetorheological Dampers Having Polynomial Model

作　　者：姚嘉凌[1] 郑加强[2] 高维杰[2] 张振军[2] 

机构地区：[1]南京林业大学汽车与交通工程学院,南京210037 [2]南京林业大学机械电子工程学院,南京210037

出　　处：《系统仿真学报》2009年第8期2400-2404,共5页Journal of System Simulation

基　　金：南京林业大学科技创新基金资助项目(CX2004-05)

摘　　要：为建立既能精确地表达磁流变减振器非线性特性,又便于实施控制的力学模型,利用试验数据拟合了多项式模型,并设计了一个不需测量路面输入信号的模型参考滑模控制器。对磁流变减振器进行了特性试验,采用优化的方法对试验数据进行拟合,利用此模型可在开环控制下获得所需的阻尼力,预测值与试验数据吻合较好。控制器用等速趋近率改善滑模运动段的动态品质,将多项式模型的磁流变减振器结合到控制器的仿真计算中,结果证实了其有效性。In order to build a magnetorheological （MR） dampers＇ accurate dynamical model which can reflect nonlinear behavior and is convenient for control, a polynomial model was fitted by using experimental data. Meanwhile, a model reference sliding mode controller eliminating the necessity of a road signal was designed. Damping characteristic experiments were conducted on a MR damper and the optimization approaches were adopted to fit the polynomial model. The desired force can be obtained in the open-loop control, while the prediction damping force can agree well with the tested data. A uniform reaching law was used to improve the dynamic quality of sliding mode motion in the proposed controller. The simulation results indicate the effectiveness of the controller cooperate the MR damper with polynomial model.

关 键 词：多项式模型 半主动悬架 滑模控制 磁流变减振器 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术] U463.33[自动化与计算机技术—计算机科学与技术]