Active Structural Control Based on Integration of Η∞ Control and Equivalent-Input-Disturbance Approach
Mingxing Fang*, Lijun Wu*, Jing Cheng*, Youwu Du*, and Jinhua She**,***
*College of Physics and Electronic Information, Anhui Normal University
Wuhu Anhui 241000, China
**School of Automation, China University of Geosciences
Wuhan, 430074, China
***School of Engineering, Tokyo University of Technology
Tokyo 192-0982, Japan
This paper describes an approach for suppressing earthquake-induced vibrations of building structures. The design of the control system is based on the equivalent-input-disturbance approach for improving the vibration rejection performance. A control system configuration with a vibration estimator is described, and a method of designing such a control system that employs Η∞ control is presented. The vibration rejection performance is guaranteed by the control structure, in which an equivalent vibration signal on the control input channel is estimated and directly incorporated into the control input. The validity of our method is demonstrated through simulations.
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