Real‐time hybrid simulation of semi‐active control using shaking table: Proposal and verification of a testing method for mid‐story isolated buildings

Abstract

Abstract This study proposes a real‐time hybrid simulation method for semi‐active control using a shaking table. The method can be used for simulating a mid‐story isolated building. This simulation system uses a test specimen for the upper structure, a semi‐active damper that is installed in the base isolation layer on the shaking table, and a lumped mass system for a lower structure for the computer simulation. A rotary inertia mass damper that contains magnetorheological fluid is used in the semi‐active control. The semi‐active control cannot avoid a control time lag. This time lag is estimated by assuming a first‐order lag system. The experimental and analytical results considering a control time lag are compared in this study. The validity of the real‐time hybrid simulation is verified.

Keywords

• control time lag
• mid‐story isolated building
• real‐time hybrid simulation
• semi‐active control
• shaking table