Active vibration control of structural systems by a combination of the linear quadratic Gaussian and input estimation approaches

Abstract

This study proposes an active control method to suppress the responses of structural systems. The present control method is a synthesis algorithm of the linear quadratic Gaussian (LQG) and input estimation approaches. By using the synthesis method, structural vibrations can be suppressed more effectively due to the actions of the proper control forces. In this work, numerical simulations of active vibration control of lumped-mass systems are performed to verify the feasibility and effectiveness of the proposed algorithm. The simulation results demonstrate that the control performance of the present method for structures with external excitation forces is better than that of the conventional LQG approach.