Predictive control of base‐isolated structures

Abstract

Abstract A control design for absolute motion reduction of base‐isolated structures subjected to earthquake excitation is presented herein. The control objective is to provide a vibration‐free environment for sensitive equipment protection. Predictive control theory is used for the control design. This theory allows the designer to handle time delays generated by the dynamics of actuators. The study reported herein demonstrates, by numerical simulation, the efficacy of this controller in reducing acceleration response in the superstructure in the presence of delays. Stability analysis, frequency response and response to ground motion excitation are developed to assess the characteristics of the controller.