An analytical model is developed for structural control optimization in which both noncollocated sensor/actuator placement and feedback control gain are considered as independent design variables. Two different control algorithms-active damping control and optimal output feedback control-are applied to derive the control input, and the optimal set of solutions is determined by the modified method of feasible direction. Analytical results show that noncollocated sensor/actuator location can lead to instability of the closed-loop system; however, the optimal sensor/actuator location, together with the optimal feedback control gain, can stabilize the structural control systems. In addition, the performance of both active damping control and LQ control can be maximized.
展开▼
