Abstract
This paper addresses the sensitivity problem of sensor locations for vibration control and damage detection of thin-plate systems with parameter variation or noise. For vibration control, the technique for robust determination of sensor locations is presented. Based on the spectral condition number of the Hankel matrix, the optimal sensor locations (OSLs) can be determined, and the effect of noise on the OSLs is investigated using the matrix perturbation theory. For damage detection, the damage locations can be determined using the damage index β derived from the curvature modes. The sensitivity analysis of sensor locations on the detection result for systems with parameter variation is presented. Some experiments are carried out to verify the effectiveness of the proposed method.
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