Design and research of hydraulic cylinder precise control test system

The position deviation after the continuous action of the hydraulic support in the fully-mechanized mining face affects the mining efficiency of the shearer. In view of the above problems, the mechanism of the hydraulic system of the fully-mechanized mining face is analyzed, the coupling relationship between the system pressure, flow and the displacement of the hydraulic cylinder is established, and a hydraulic cylinder precise displacement test platform with emulsion/pure water as the transmission medium is designed and built, which can carry out eccentric load and lateral load experiments of the test hydraulic cylinder. The test platform is composed of hydraulic test system, oil pressure regulation system, electrical control system, data acquisition system, upper computer software system, loading test bench, etc. The oil pressure regulation mechanism adjusts the working attitude of the hydraulic cylinder, the data acquisition system monitors and tests the pressure, flow, displacement, temperature and other