Vibration Control of Magnetorheological Suspension Systems for Vehicles

Magnetorheological dampers have the advantages of fast response, low energy consumption and large controllable damping force, and are widely used in structural and vehicle vibration control, but the hysteresis characteristics between their damping force–velocity-current lead to degraded or even unstable vibration control performance. In order to improve the control accuracy of the damping force of the magnetorheological damper, we established the Bingham model to describe the hysteresis characteristics of the magnetorheological damper, and proposed a tracking control method for the magnetorheological damper damping force based on the Bingham model. In order to improve the vibration control performance, and a vibration control method with magnetorheological damper hysteresis force tracking control is proposed. In order to experimentally verify the effectiveness of the control method, a magnetorheological semi-active suspension control system for wheeled vehicles is established. The driving and shock experimental results show that the method established in this paper can effectively reduce the root mean square value of vibration acceleration and shock response by more than 20% and improve the vehicle ride comfort.