Semi-active control for 1-DOF system using magnetorheological elastomer
Abstract
Magnetorheological elastomer (MRE) is one of the smart materials that have interested many scientists in recent years. The stiffness of a material can be changed under the difference levels of magnetic field. In this study, MREs are used in intelligent suspension systems. In this system, the stiffness of the system is controllable so that its natural frequency can be adjusted to avoid resonance. First, the material stiffness is investigated under the different levels of magnetic field. Second, semi-active control with a strategy is based on Lyapunov stability theory to reduce system vibration. The effectiveness of the controller has been evaluated by MATLAB simulation and by experiment. The results show that the proposed controller has reduced vibration in the 1-DOF system.
Moraref