Title :
The design and implementation of robust strategies for active vibration control
Author :
Sadri, A.M. ; Wynne, R.J. ; Wright, J.R.
Author_Institution :
Manchester Sch. of Eng., UK
Abstract :
Theoretical modelling of the vibration of a plate structure incorporating piezoelectric actuators is presented. The equations governing the dynamics of the plate, relating the strains in the piezoelectric elements to the strain induced in the system, are derived for isotropic plates using the Rayleigh-Ritz method. A technique for the optimal placement of piezoelectric actuators is developed using modal controllability and a genetic algorithm (GA) as the search engine. The model was used to design robust controllers (LQG and H∞) for a cantilever plate. The proposed controllers were then implemented with the measured results comparing favourably with those predicted from simulation
Keywords :
Rayleigh-Ritz methods; control system synthesis; controllability; flexible structures; genetic algorithms; optimal control; piezoelectric actuators; robust control; vibration control; GA; H∞ controller; LQG controller; Rayleigh-Ritz method; active vibration control; cantilever plate; genetic algorithm; isotropic plates; modal controllability; optimal piezoelectric actuator placement; plate dynamics; plate structure vibration; robust controller design; search engine; strain; Aerodynamics; Bonding; Capacitive sensors; Controllability; Equations; Piezoelectric actuators; Piezoelectric materials; Predictive models; Robust control; Vibration control;
Conference_Titel :
American Control Conference, 1998. Proceedings of the 1998
Conference_Location :
Philadelphia, PA
Print_ISBN :
0-7803-4530-4
DOI :
10.1109/ACC.1998.703242