抄録
A new multiple-input modeling is developed to identify the number and the location of independent vibration sources based on the measured vibration spectrum at several points of the structure during operation, where the vibration sources are guessed to be located. In the modeling the principal power spectrum and the virtual coherence are obtained by he result of eigenvalue decomposition of auto-cross spectrum matrix of measured vibration and used for identification. A simple plate and a complex automobile body which are excited by known forces are used to demonstrate the effectiveness of the proposed method.
