Modeling and dynamic characteristic simulation of axial variable piston pump with conical cylinder
Piston pump is an important device in hydraulic system.Nowadays,piston pump is extensively used in industrial field due to its compact structure,high working pressure and high efficiency.However,due to the late start of China's hydraulic technology,some high-end equipment piston pumps are still dependent on imports seriously.Therefore,it is of great significance to study the high-pressure piston pumps and pro-mote its independent production.In this paper,the AMEsim simulation research of high-pressure piston pump is carried out to provide guidance for the key parameter setting and structural optimization design during autonomous design of high-pressure piston pump.According to the working principle and structural character-istics of PD11V high-pressure variable piston pump,the piston kinematics analysis and flow area calculation of valve plate of the conical cylinder structure of piston pump are carried out.The AMEsim simulation soft-ware is used to establish a nine-piston conical cylinder piston pump simulation model to analyze the effect of different swash plate inclination and motor speed on the outlet flow pressure characteristics of conical cylinder piston pump.Simulation results show that the swash plate inclination angle should be appropriately reduced and a suitable motor speed should be selected to reduce the noise in the process of pump operation.Finally,the AMEsim modeling and simulation are carried out based on the principle of servo control loop for variable mechanism.Comparing with actual test parameters,the output control characteristic curve can meet the de-sign and functional requirements of variable mechanism quite well,thus verify the accuracy of simulation model.
国家科技期刊平台
NSTL
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