Title :
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
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;
Conference_Titel :
American Control Conference, 1999. Proceedings of the 1999
Conference_Location :
San Diego, CA
Print_ISBN :
0-7803-4990-3
DOI :
10.1109/ACC.1999.786400
