Active control of flexible structure using genetic algorithms and LQG/LTR approaches

Author

Shen, Yaxi ; Homaifar, Abdollah

Author_Institution

Dept. of Electr. Eng., North Carolina A&T State Univ., Greensboro, NC, USA

Volume

6

fYear

1999

fDate

1999

Firstpage

4398

Abstract

A two degrees of freedom model has been constructed for a structural dynamic system consisting of a linear elastic plate bonded with piezoelectric sensors and actuators. An optimal multivariable feedback controller is designed. Two control procedures based on the minimization of the fitness function, the performance output error, and the quadratic performance index have been developed that use genetic algorithms-designed PD control and LQG control methods through the MATLAB environment. The results confirm that these two kinds of control methods are reliable in the active damping of the vibration at the resonance frequencies

Keywords

damping; flexible structures; genetic algorithms; linear quadratic Gaussian control; performance index; piezoelectric actuators; piezoelectric transducers; two-term control; vibration control; LQG control; LQG/LTR; PD control; active control; active vibration damping; fitness function; flexible structure; genetic algorithms; linear elastic plate; optimal multivariable feedback controller; performance output error; quadratic performance index; structural dynamic system; two degrees of freedom model; Adaptive control; Bonding; Error correction; Flexible structures; Genetic algorithms; Hydraulic actuators; Mathematical model; Minimization methods; Piezoelectric actuators; Sensor systems;

fLanguage

English

Publisher

ieee

Conference_Titel

American Control Conference, 1999. Proceedings of the 1999

Conference_Location

San Diego, CA

ISSN

0743-1619

Print_ISBN

0-7803-4990-3

Type

conf

DOI

10.1109/ACC.1999.786400

Filename

786400