轴向柱塞泵, 泵控缸, AMEsim, 仿真

In order to compensate for the area deviation of differential cylinder and change the output flow of the pump, a program of parallel-type of three-window of variable axial piston pump was proposed. The new typital piston pump can output two flows, and can be used to balance the asymmetric flow of differential cylinder in closed-loop system, achieving the desired effect of single-pump controlling differential cylinder.First a geometric model of the piston pump was established based on the Pro/E software,then against the problem of crossing angle at the new valve plate’s damping trough and the characteristics of new pump’s flow output ,a simulation model of controling the pump’s displacement was established based on the AMEsim simulation software. The authors compared the impact of the flow of piston pump caused by the crossing angle of new valve plate's damping trough, determined reasonable design parameters of the valve plate, analyzed the wave characteristics of pump’s flow output and the control characteristics of pump’s variable displacement.The research work makes a guiding role in designing and manufacturing new variable axial piston pump