Affiliation of Author(s):航空学院
Journal:工程力学
Key Words:模态分析;谐波检测;谐波去除;空间变换;概率统计;
Abstract:试验模态分析中通常使用平均方法处理由实验环境引起的随机噪声。当测试环境中含有周期噪声时,很难通过平均方法去除,在频响函数中会产生虚假共振峰,影响结构参数识别精度。该文提出了基于增强概率统计的谐波响应检测方法,将物理坐标下的响应信号变换到模态坐标中,并根据谐波信号的统计特性检测出谐波成分。提出了一种基于谐波分解与重构的谐波去除方法,用于消除谐波成分对结构参数识别的影响。通过平面刚架的仿真算例和GARTEUR飞机模型实测算例阐明了提出方法的实现过程,验证了其可靠性。
Translation or Not:no
Date of Publication:2018-03-25
Co-author:夏遵平
Correspondence Author:王彤
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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