Abstract
H_2 controller is designed with the reduced order model of smart structure which is obtained by finite element and modal analyses. The control force is applied by the piezoelectric film actuator and the feedback signals are detected by the piezoelectric sensor and the accelerometer in the system. The vibration response is suppressed by modal control in which the modal coordinate displacement is taken as the controlled variable. The placement of the piezoelectric actuator and the H_2 control system are simultaneously optimized by using GA to achieve an enhanced vibration control performance. It is verified by some applications that the enhanced performance for the vibration suppression can be achieved by the present method.
