An operational modal analysis method in frequency and spatial domain
A frequency and spatial domain decomposition method (FSDD) for operational modal analysis (OMA) is presented in this paper, which is an extension of the complex mode indicator function (CMIF) method for experimental modal analysis (EMA). The theoretical background of the FSDD method is clarified. Singular value decomposition is adopted to separate the signal space from the noise space. Finally, an enhanced power spectrum density (PSD) is proposed to obtain more accurate modal parameters by curve fitting in the frequency domain. Moreover, a simulation case and an application case are used to validate this method.
作 者： Wang Tong Zhang Lingmi Tamura Yukio 作者单位： Wang Tong,Zhang Lingmi(Institute of Vibration Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China)Tamura Yukio(Department of Architectural Engineering, Tokyo Institute of Polytechnics, Japan)
刊 名： 地震工程与工程振动（英文版） SCI 英文刊名： EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION 年，卷(期)： 2005 4(2) 分类号： P315 关键词： operational modal analysis modal parameters identification frequency and spatial domain