Active vibration control of flexible structure have been aggressively studying these days. We have done the benchmark test to the benchmark vibration model with four stories in Japan using modern control, robust control and nonlinear control through simulations and experiments. From this benchmark test, we confirmed that sliding mode control is one of the most powerful robust control scheme as structural control strategies. So, we apply sliding mode control strategies to wind-excited tall building with 76-story. In particular, we present new control scheme of sliding mode control in this paper. we don't need to use all state variables, which is well known as output feedback control. In this approach, the hyperplane as sliding surface is designed with suboptimal control theory and frequency-shaped filter. As the results, the control performance becomes much better comparing with linear robust control like Hinfinity control and also the order of the controller is reduced comparing with a conventional sliding mode control and linear robust control.
 Kenzo NONAMI, Control Performances Based on Control System Design Strategies for Active Structural Control, JSME International Journal, 38(3), Series C, 367-378, 1995.
 Kenzo NONAMI, Hidekazu NISHIMURA and Hongqi TIAN, Control Based Frequency-Shaped Sliding Mode Control for Flexible Structures, JSME International Journal, 39(3), 493-501, 1996.