第35 卷 第2 期 噪 声 与 振 动 控 制 Vol 35 No.2

2015 年4 月 NOISE AND VIBRATION CONTROL Apr. 2015

文章编号：1006-1355(2015)02-0065-04

基于Matlab 的动力总成悬置系统解耦优化

1 1 2 2

薛 华 ，刘志强 ，刘 岩 , 苏 迎

(1. 辽宁工程技术大学 机械工程学院，辽宁 阜新 123000；

2. 华晨汽车工程研究院，沈阳 110000 )

摘 要：以某车型怠速运转时方向盘剧烈抖动为背景，测量动力总成和悬置参数，建立了动力总成悬置系统的6 自

由度数学模型，通过解耦计算，发现各个方向耦合比较严重，需要进行系统优化设计；应用撞击中心理论，对前后悬置

位置进行调整，然后以悬置系统的刚度、悬置倾斜角度为约束变量，使用Matlab 的多目标优化函数fgoalattain ，以6 个方

向的耦合最小为目标函数进行优化设计，结果表明此方法能够在一定的约束范围内较好的实现各个方向的解耦，具有

较高的实用价值。

关键词：振动与波；动力总成；悬置系统；怠速振动；多目标优化；能量解耦

中图分类号：U461.4 文献标识码：A DOI 编码：10.3969/j.issn. 1006-1335.2015.02.016

Decoupling and Optimal Design of a Powertrain Mount System

Based on Matlab

XUE Hua 1, LIU Zhi-qiang 1, LIU Yan 2 , SU Ying 2

( 1. College of Mechanical Engineering, Liaoning Technical University, Fuxin 123000, Liaoning China;

2. Brilliance Auto Engineering Research Institute, Shenyang 110000, China )

Abstract : It is known that powertrain mount system plays an important role in vehicle design. For the steering wheel

of a car shaking violently in the idle condition, its powertrain and suspension parameters were measured, and a 6-DOF math-

ematical model of the powertrain mount system was established. The decoupling analysis showed that the coupling effect

was serious in all the directions. Therefore, system optimal design was done. Firstly, the mount position was adjusted based

on the impact center theory. Then, choosing the rigidity of the mount system and the mount inclination angle as the con-

straint variables and the minimum dec