The device is composed of a feedback control system. It improves the accuracy of the entire system of control, and improve the dynamic characteristics of the system. However, due to the expensive, complex piping systems, applications require large thrust and moment of thrust has been introduced. Its features are as follows.high temperature solenoid valve
(1) under the conditions of the same output power, hydraulic gear small size, light weight, compact structure, small inertia, fast response.
(2) a wide range variable speed, larger thrust output and greater torque.
Transmission gap, smooth movement, frequent commutation operation. Easy to operate, easy to automate, easy to implement complex automatic control JD-turn sequence, easy to implement overload protection.
Hydraulic oil viscosity is affected by ambient temperature, does not apply to long-distance transmission control.
The control device is required to set the the feedback device group and into closed-loop control. Under the controlled variable for different amount of mechanical displacement, velocity and force feedback detection device displacement detection feedback device, speed feedback detection device so that the whole system becomes complex, the price rise, but also improve the skills required for the maintenance personnel .pneumatic fitting
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