Abstract
In order to control the speed of hydraulic cylinder precisely through a given voltage signal on proportional valve, we adopt the pressure compensator and proportional directional valves throttle circuit in the hydraulic feed system of the designing coal and rock cutting test equipment. The simulation model of the system based on AMESim is built, the dynamic characteristic on the feed system of proportional valve-controlled cylinder’s speed is analyzed, experiments under no-loading condition on the hydraulic pump station is done. Simulation and experimental results show that the cylinder’s speed can be controlled precisely through a given voltage signal on proportional valve, the experimental and simulation results are close, which can better meet the test requirements of coal and rock cutting. Finally the sorting curves of the cylinder’s speed varies with the proportional valve opening can provide the basis of cutting parameters of coal and rock cutting test equipment.
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