the basic structure and mathematical models of important components of the electro-hydraulic servo test bench were introduced, and the control structure diagrams of torque control and position control ...

Abstract: Two-stage electrohydraulic servo-valves play an important role in the most modern hydraulic servo control systems for fight wing controls, manufacturing robots, and many engineering ...

The valves are opened and closed by the control voltage signal u(t), which is generated from the controller. This paper uses the PI controller to control the operation of the hydraulic actuator.