Title :
Optimal location of piezoceramic actuators for vibration suppression of a flexible structure
Author :
Fahroo, Fariba ; Wang, Yun
Author_Institution :
Dept. of Math., Naval Postgraduate Sch., Monterey, CA, USA
Abstract :
In this work, the problem of optimal placement of piezoceramic actuators along a flexible structure is considered. The design goal is to optimize the actuators´ performance in vibration suppression of a beam cantilevered on one end to a rotating hub. First, the control problem is presented as an infinite-dimensional linear quadratic regulator problem. Then, an approximation framework based on a Legendre polynomials based Galerkin method for approximating the control system is developed. Two different approximate performance measures that are based on the LQR cost function are considered and numerical examples are presented to illustrate effectiveness of each measure
Keywords :
Galerkin method; Legendre polynomials; control system synthesis; flexible structures; linear quadratic control; multidimensional systems; piezoceramics; piezoelectric actuators; vibration control; Galerkin method; LQ control; Legendre polynomials; approximate performance measures; approximation framework; cantilevered beam; control system approximation; flexible structure; infinite-dimensional linear quadratic regulator problem; optimal placement; piezoceramic actuators; vibration suppression; Actuators; Control systems; Cost function; Design optimization; Flexible structures; Moment methods; Piezoelectric materials; Polynomials; Regulators; Structural beams;
Conference_Titel :
Decision and Control, 1997., Proceedings of the 36th IEEE Conference on
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4187-2
DOI :
10.1109/CDC.1997.657888
