Control of beam vibrations by means of piezoelectric devices: theory and experiments

The problem of the attenuation of the vibration effects in active cantileve r beams has been approached by two strategies, position and velocity contro l, which have been simulated numerically and analysed experimentally. The n umerical simulation has been developed by means of a finite element approac h based on an Euler-Bernoulli model and subsequent modal factorisation. Eac h device as well as each electronic circuit, present in the single-input si ngle-output control system has been modelled and the results of the numeric al simulations have been compared with the ones obtained in the experimenta l tests. A good correspondence has been obtained in all the examined cases. (C) 2000 Elsevier Science Ltd. All rights reserved.