Test bench, control method of back pressure valve and storage medium

Abstract

The application discloses a test bench, a control method of a back pressure valve and a storage medium, and belongs to the technical field of hydraulic control. The test bench comprises an upper computer, a motion controller, a servo motor, a back pressure valve and an oil tank. The back pressure valve comprises a first annular valve core, a first needle valve core, a second annular valve core and a second needle valve core which are connected with the oil tank respectively. The first annular valve core and the first needle valve core are arranged in parallel at the inlet of a test piece, and the second annular valve core and the second needle valve core are arranged in parallel at the outlet of the test piece. The motion controller is used for receiving test parameters of the test piece issued by the upper computer, and calculating an inlet target flow coefficient and an outlet target flow coefficient of the test piece according to the test parameters. The motion controller is further used for adjusting the valve core position. The application can realize the automatic control of the back pressure valve and improve the test efficiency of the fluid element.

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