Abstract
The purpose of this study is about Control Development of Magnetorheological Damper Using Duffing-like Model. Semi-active control of magnetorheological (MR) dampers for vibration reduction of structural systems has received considerable attention in civil and earthquake engineering, because the effective stiffness and damping properties of MR fluid can change in a very short time in reaction to external loading, requiring only a low level of power. However, the inherent nonlinear dynamics of hysteresis raise challenges in the modeling and control processes. The Bouc-Wen model in the literature has complex mathematical equations including discontinuous, nondeterministic, and piecewise functions render the system identification, stability analysis, and control design processes to be difficult. In order to control the MR damper, an innovative Duffing-like equation is proposed to approximate the hysteresis dynamics in a deterministic and systematic manner than previously has been possible. In the result of simulation and experiment, the comparison between the Bouc-Wen model and Duffing-like model will be shown to verify the purpose for vibration reduction of structural systems.