Comparison Between the Effect of Magnetorheological Damper Force and a System Equipped with ADRC

Abstract

The implementation of controller for a suspension system should have as low as possible complexity. The engineer should find the appropriate way to apply algorithms with low scaling parameters to achieve the required performances such as: ride comfort ride comfort, suspension spaces and dynamic tire load. For this reason, an appropriate way should be invented to apply the algorithm that gives the force generated by each actuator based on the motions of the vehicle which is received from various sensors located at different points of the vehicle. Two control strategies are investigated: First, the Active Disturbance Rejection Control (ADRC) control is investigated for showing its applicability to ameliorate ride comfort of passengers. Second, a traditional skyhook control scheme equipped with an Magnetorheological (MR) damper is investigated to show its superiority to give good performances of road holding and suspension space limits compared to the introduced intelligent controller ADRC. Furthermore, this semi-active controller is known as a simple control strategy with straightforward tuning process where only one gain parameter is needed for the implementation process. A simple prototype of quarter-car suspension is given to show the effectiveness of the introduced controllers. MATLAB/Simulink environment was used for investigating the comparison between the proposed techniques.