基于工作模态法的动力总成刚体模态参数识别.pdf

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2008年 12月噪声与振动控制第 6期
文章编号: 1006 1355 (2008) 06 0088 04
基于工作模态法的动力总成刚体模态参数识别
龙岩 1 , 史文库 1 , 兰靛靛 2 , 梁天也 3
(1. 汽车动态模拟国家重点实验室, 长春 130025;
2. 长安汽车股份有限公司汽车工程研究院, 重庆 4011202; 3. 吉林大学植物科学学院, 长春 130062)
摘要: 介绍工作模态法( PolyMax方法)进行动力总成工作模态分析的优点,并模拟整车工作情况下对动力
总成的模态参数进行识别,得到动力总成的各阶刚体模态,通过实验识别模态和理论计算模态的对比,说明采用工
作模态法能够较准确地识别出动力总成的实际刚体模态。
关键词: 振动与波;工作模态法;参数识别;动力总成;模态参数
中图分类号: U461. 1 文献标识码: A
M oda l Param eter Iden tif ica tion of Powertra in
R ig id Body Using O pera tion M oda lM ethod
LON G Yan1 , SH I W en ku1 , LAN D ian dian2 , L IAN G Tian ye3
(1. State Key Laboratory of Automobile Dynam ical Simulation, J ilin University, Changchun 130025, China;
2. Automobile Engineering Institute of Chang’an Automobile Co. L td, Chongqing 401120, China;
3. College of B iology Science, J ilin University , Changchun 130062, China)
Abstract: The merits of the operation modal method by PolyMax for analyzing the operation modal
of powertrain were introduced. The modal parameter identification of powertrain for an overall vehicle was
simulated. A ll frequencies and rigid body modes of powertrain were obtained. Comparing the result with
that of experiment modal identification, it can be concluded that the rigid body modes of powertrain can
be identified accurately by operation modal method.
Key words: vibration and wave; operation modal; param