Wang Tong
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计及噪声激励的模态参数识别方法
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Affiliation of Author(s):航空学院

Journal:振动工程学报

Key Words:结构振动;参数识别;模态分析;噪声激励;Hilbert变换;

Abstract:对结构进行模态分析时,若被测结构同时存在人工激励和环境噪声激励,充分利用噪声响应可以得到更优结果。基于无参数噪声模型,提出一种计及噪声激励的试验模态参数识别方法。由谱分析法计算出噪声响应的自谱-互谱矩阵,然后根据Hilbert变换理论估计出仅噪声响应的类频率响应函数。将该函数用于扩充基于人工激励估计出的频率响应函数矩阵,并使用多参考点最小二乘复频域法识别出结构模态参数。采用弯扭二自由度机翼模型仿真算例和飞机模型实测算例,对该方法的可靠性进行了验证。将所提方法与传统方法比较,结果表明:该方法更可靠、参数识别更准确。

Translation or Not:no

Date of Publication:2018-06-15

Co-author:夏遵平

Correspondence Author:王彤

Personal information

Associate Professor
Supervisor of Master's Candidates

Gender:Male

Alma Mater:Nanjing University of Aeronautics and Astronautics

Education Level:With Certificate of Graduation for Doctorate Study

Degree:Doctoral Degree in Engineering

School/Department:College of Aerospace Engineering

Discipline:Mechanical Design and Theory. 航空宇航科学与技术. Solid Mechanics

Business Address:A18-618

Contact Information:wt78@nuaa.edu.cn

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