LQG control design for panel flutter suppression using piezoelectric actuators

Theoretical modelling of active flutter suppression of plate components of a aerospace structure is presented. The equations governing the dynamics of the panel, 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 criterion for optimal placement of piezoelectric actuators was suggested using modal controllability. The model was then used to find the optimal location for the piezoelectric actuator utilizing genetic algorithms. The linear quadratic Gaussian design method was used to stabilize the panel flutter using a piezoelectric actuator. This study clearly showed that the flutter can be delayed using the piezoelectric actuator.