Two-degree-of-freedom hydraulic pressure controller design for direct yaw moment control system

Abstract This paper describes the controller design scheme for the hydraulic system in Direct Yaw Moment Control (DYC) System for a front-engine front drive vehicle. Regardless of the hydraulic system's characteristics changes over a wide range of operational conditions, the hydraulic system is required to achieve the desirable speed of response and stability. This paper, therefore, proposes a two-degree-of-freedom hydraulic control system consisting of reduced-order controllers to satisfy these requirements. From the results of proving ground tests, it is confirmed that the proposed control system satisfies the requirements imposed on the hydraulic system for a DYC system.