Experimental Modal Analysis of Local Structural Vibration of S/R Machine

摘要

This paper presents a vibrating measurement and system identification of local structure of a storage/retrieval machine (S/R machine). Time-domain experimental testing data is acquired by a multi-channel analyzer. From the testing data, modal parameters are extracted, such as structure natural frequency, modal mass, modal shapes and damping ratio, etc. The analysis of local structural vibration and localize the region of noise source have been performed based on modal analysis. In this paper the acoustic intensity measurement is also performed to localize the noise source. The results of two approaches are agreement. These results can be used in some applications such as reducing vibrating noise of during operating conditions