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Indexed by:会议论文

Date of Publication:2008-02-04

Included Journals:EI

Abstract:This paper discusses an extension of the MinMAC algorithm to aid sensor placement for modal tests. The extension is, essentially, a forward-backward combinational MinMAC algorithm. The original MinMAC algorithm proposed by Carne can be regarded as a forward sequential MinMAC algorithm, which maximizes the discrimination between mode shapes of interest starting from a small intuition set. The proposed forward-backward combinational MinMAC algorithm aims to combine advantages of both forward addition and backward deletion MinMAC approaches. Moreover, the proposed algorithm is applied to the I-40 Bridge and the result is compared with that of the Effective Independence method. Furthermore, discussions of influencing sensor placement methods and their connections based on our resent results are presented, through which the insight of sensor placement problem is clearly interpreted. In particular, the physical significance and efficient computation of the Effective Independence method are introduced. Finally, comparison of sensor placement methods on a ladder structure and evaluation criteria are discussed.