直接位置反馈型恒功率变量泵静态特性分析

Analysis of Static Characteristics of Direct Position Feedback Constant Power Variable Displacement Pump

采用直接位置反馈型恒功率变量泵作为研究主体,首先简述了恒功率特性、列出了变量机构特性方程、计算并绘制出泵压力-流量特性曲线;再次利用AMESim HCD库组件建立了该变量泵的仿真模型并由样本参数设定模型参数,通过模拟负载和设定不同弹簧预紧力两种情况分析泵的压力-流量特性。经分析结果表明模型建立正确,为直接位置反馈型恒功率变量泵的理论设计和后续研究提供了理论依据。

A direct position feedback constant power variable pump is used as the research subject in this paper. Initially,the constant power characteristic is summarized and the characteristic equation of variable mechanism is setup. Then, the curve of pump pressure with flow equation is drawn and the simulation model of the variable pump isestablished by the HCD library in AMESim. Finally, the pressure flow characteristics of the pump are analyzedthrough simulation load and setting different spring preload.