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.

Abstract: To understand temperature's influence on the electro hydraulic servo valve ... On this basis, the routes by which temperature affects the servo valve's control accuracy are investigated.

which makes the electro-hydraulic servo valve system have higher dynamic and steady performance. Because the system exists complicated nonlinearity and uncertainty, the conventional control method ...