Active vibration control of a compliant structure using a magnetostrictive actuator

摘要

This paper presents work in progress concerning the development of a controller for active vibration control of a compliant structure using a magnetostrictive actuator. The paper describes the approach used to develop a model of the plant that includes both the actuator and cantilever beam considered for controller design. The active vibration control capabilities of a magnetostrictive actuator attached to a damped structure are considered. A linear model is assumed and adaptive filtering is used to identify actuator parameters. In addition, a Galerkin method is used to discretize the weak model of the compliant beam, which includes the influence of the attached magnetostrictive actuator. Special attention is paid to the interaction of the actuator and beam during the system identification efforts. An estimation of the model parameters is made through minimization of the beam's free end acceleration cost function. Finally, discussion of the initial observer and controller design effort is included.