非平稳环境激励下结构模态参数识别方法综述  

Review on the structural modal parameter identification methods under non-stationary ambient excitation

作　　者：高天驰 赵海峰[1] 石海荣 Gao Tianchi;Zhao Haifeng;Shi Hairong(Institute of Mechanical Science and Engineering,Northeastern Petroleum University,Heilongjiang Daqing,163318,China;Shandong Kerui Petroleum and Natural Gas Group Co.,Ltd.,Shandong Dongying,257067,China)

机构地区：[1]东北石油大学机械科学与工程学院,黑龙江大庆163318 [2]山东科瑞石油天然气集团有限公司,山东东营257067

出　　处：《机械设计与制造工程》2019年第9期1-7,共7页Machine Design and Manufacturing Engineering

基　　金：国家自然科学基金资助项目(11472076);中国石油天然气集团公司“十三五”攻关课题(2016A-1007)

摘　　要：在回顾时、频域环境激励下模态参数识别方法适用条件与优缺点的基础上,指出平稳白噪声常作为时、频域模态参数识别的假设条件。重点针对实际工程中某些环境激励信号表现出明显的非平稳特性,对时频分析方法以及放宽时、频域对平稳白噪声作为假设条件的模态识别方法进行了总结与讨论。On the basis of reviewing the applicable conditions and advantages and disadvantages of the modal parameter identification method in the time domain and frequency domain,it illustrates that the stationary white noise is often assumed as the frequency domain and the time domain.Focusing on the obvious non-stationary characteristics of some environmental excitation signals in practical engineering,it summarizes the method of time frequency analysis,describes the scope of application of relaxation time and frequency domain,proposes the stationary white noise as well as a new mode recognition method.

关 键 词：环境激励 模态识别 非平稳 工况模态分析 

分 类 号：O321[理学—一般力学与力学基础]