Random vibration analysis of controlled building based on the equivalent excitation method

Based on the equivalent excitation method, the equivalent excitation load of the controlled system is constructed under random excitations, and then adopting the state space control theory, the responses of the controlled system are calculated. According to the equivalent excitation method, the statistical characteristics of the responses are determined to fulfill the random vibration analysis of the controlled system. The simulation analysis of a real building shows that the LQG controlled structural has remarkable control effect. And that prove the feasibility and effectiveness of the random vibration analysis for the controlled system.