A novel direct instantaneous pressure control of hydraulic pump system with SRM drive

A novel direct instantaneous pressure control of hydraulic pump system with SRM drive is presented in this paper. The proposed hydraulic pump system embeds pressure controller and direct instantaneous torque control (DITC) controller. DITC controller can reduce inherent torque ripple of SRM, and develop a smooth torque, which can increase stability. The proposed hydraulic pump system has also fast step response and load response. At last the proposed hydraulic pump system is verified by computer simulation and experimental results.