Abstract
The influence temperature can have on PZT actuators and sensors can be significant. The variations in these properties can ultimately affect the ability of PZT devices to actively suppress vibrations in flexible structures. To analyse the influence of these property variations, a reduced-order-lumped-parameter finite element model of a light, flexible structure was developed. The model is enhanced by including provisions for PZT actuators and sensors adhered to the structure as well as a damping term to account for material nonlinearities. These validated models assisted the development of an adaptive controller for the active vibration suppression of structures subject to significant temperature variations. The controller was found numerically and experimentally to improve vibration suppression performance over an equivalent fixed gain controller.
