Experiments on the vibration suppression of a piezoelectric beam using a self-sensing mechanism

This paper deals with a problem of vibration suppression of a piezoelectric beam using a self-sensing algorithm. Two methods, which are PPF(positive position feedback) and SRF(strain rate feedback), are considered to suppress a residual vibration of a piezoelectric beam developed during the step positioning of a beam end point. It turns out that the vibration suppression based on using PPF algorithm is better than using SRF. Two self-sensing algorithms are treated here, which are a strain and its rate estimator of a beam movement, in order to provide feedback information for the closed loop vibration suppression control. The efficacy of the proposed idea is evaluated through experiments.