Hydraulic electrohydraulic ratio control system and method for prebending machine
An electro-hydraulic proportional and control system technology, which is applied in the direction of fluid pressure actuation system components, mechanical equipment, fluid pressure actuation devices, etc., can solve the problems of high price and achieve fast response, stable operation and high positioning accuracy Effect
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[0020] The hydraulic electro-hydraulic proportional control system of the pre-bending machine of the present invention includes a hydraulic proportional valve closed-loop control system and a slider outer loop closed-loop control system. The hydraulic proportional valve closed-loop control system consists of a hydraulic proportional amplifier 203, a large flow electro-hydraulic proportional directional valve 205 and a valve core. The inner loop feedback 208 is composed of the slider outer loop closed-loop control system consisting of the numerical control system 201, the pre-bending machine slider 207, and the grating scale outer loop speed position feedback 209. The numerical control system 201 conducts electric Connection; the proportional valve amplifier 203 is electrically connected with the large-flow electro-hydraulic proportional directional valve 205 by driving a large current 204; the large-flow electro-hydraulic proportional directional valve 205 is connected with the ...
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