MR DAMPER-LQR CONTROL FOR EARTHQUAKE VIBRATION MITIGATION

The use of semi-active control structural techniques has been a very interesting area of research in recent years. In this present paper, a semi active control for MR damper is proposed for suppress earthquake structural vibration. The controller design based on Linear Quadratic Regulator (LQR) with a robust feedback law to control the input energy of MR damper which minimizes a vibration of three story structure with on MR damper installed in the first floor. Under the El Centro's 1940 earthquake, the feasibility an effectiveness of the proposed algorithm is verified by a numerical simulation using Matlab. The models results comparison of controlled and uncontrolled structural vibration showed the performance of the present proposed approach.