valve position feedback signals

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hydraulic components In the system control strategy, the implementing agency of the electro-hydraulic control input signal and valve position feedba ck signals are 4 ~ 20mA current signal. The the position amplifier receiving Cockpit to 4 ~ 20mA current signal, the position amplifier receives a signal called input signal, detected by the displacement sensor signal is transmitted to the signal after the conversion amplifier called the feedback signal, both through a comparison amplifier and power amplifier After the input to the hydraulic servo valve to a proportional current signal to drive the servo valve. When there are deviations in the input signal is compared with the feedback signal, the valve is automatically adjusted. The control pressure, so that the hydraulic oil flows through the front and rear of the servo cylinder, in order to achieve the switching of the valve by controlling the operation of the hydraulic cylinder plunger or regulating role [7-8]. Gas Grill Valve