611 主成分を用いた仮想力同定による振動寄与分析法の提案

概要

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Transfer Path Analysis (TPA) is a key technology for solving the noise and vibration problems. Identification of excitation force is an essential part in TPA. For the identification of input force, Direct measurement, Mount Stiffness method and Matrix Inversion Method are commonly used. Recently, as a faster and easier approach, Operational Path Analysis (OPA) has been proposed. Firstly, this paper examines advantages and disadvantages of each TPA method. Secondly, we propose a new TPA method using Principal Component Analysis (PCA). This method does not obtain contributions of excitation points but contributions of excitation areas. The proposed method is superior to traditional method at its accuracy where the method obtains PCA Virtual Force and PCA Transfer Function.
一般社団法人日本機械学会の論文
2009-08-03