Method for establishing load sensitivity controlled axial plunger pump virtual prototype

Abstract

The invention relates to a method for establishing a load sensitivity controlled axial plunger pump virtual prototype. The method comprises the following steps of: 1, establishing a kinetic model of an axial plunger pump in kinetic simulation software, and establishing a hydraulic system model of the axial plunger pump in hydraulic system simulation software; 2, establishing a software interface by using correlated condition variants and parameters associated with each other in the simulation process of the kinetic model and the hydraulic system model as transfer parameters between the two models; and 3, performing real-time data transmission and united simulation by using the software interface between the kinetic model and the hydraulic system model. By using a hydraulic-mechanical coupling united simulation technology in the method, advantages of the kinetic simulation software on the simulation aspect of a mechanical system and the hydraulic system simulation software on the simulation aspect of a control system are fully exerted; and by united simulation, accuracy of the simulation result of the axial plunger pump virtual prototype is improved, the experiment cost is reduced, the experiment efficiency is improved, and the design time is shortened.

Description

technical field [0001] The invention relates to the technical field of a virtual prototype of an axial piston pump, in particular to a method for establishing a virtual prototype of a load sensitive control axial piston pump. Background technique [0002] In recent years, oil prices have been rising continuously, and energy has become more and more scarce. Energy-saving hydraulic systems have become the development direction and trend of construction machinery. At present, the energy-saving technology of construction machinery has become an important research topic for excavator manufacturers at home and abroad. The load-sensing pump control system senses external signals from the corresponding control valve to change the output flow and pressure of the pump itself to match the load, avoiding overflow and throttling losses caused by overflow valves and throttle valves in general hydraulic systems, making it It has the characteristics of low energy loss and high efficiency, ...

AI Technical Summary

Problems solved by technology

In order to study and design high-performance plunger pumps, simply using traditional physical experiment methods is time-consuming, difficult to change parameters or conditions, and sometimes even impossible

Moreover, there are nonlinear inertial couplings in the elastic deformation of some components of the plunger pump, and there are a large number of nonlinear links in the hydraulic system. If the usual theoretical analysis method is used, the results are often far from the actual

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