Abstract
In the base isolation system, when the response is controlled, it is said that the semi-active control by the variable damper is effective, because it can decrease the response displacement without raising the absolute acceleration. Authors use Magneto-rheological fluid damper (MR damper) for the semi-active control, and conducted the real time hybrid test that considers the uncertainty of modeling of the MR damper. The results of the real time hybrid test are compared with those of shaking table test and analytical simulation. Thus, the effectiveness of the evaluation of the semi-active control in the base isolation system by the real time hybrid test is verified. In this study, the optimum control theory is used for control techniques.
