Abstract
In order to control the vibrations of adjacent buildings connected with control devices, this paper presents two methods for designing a semi-active controller with a variable damping device. Semi-active controllers are applied to control the vibrations of building structures. A semi-active device is defined as a type of passive element that has variable properties which may be changed according to external actions. In this study, a Magnetorheological Fluids damper is used instead of a variable damping device. Simulation results demonstrate the availability and possibility of semi-active control.