轴向柱塞液压泵的电液比例控制变量机构的研究

Research on Electrohydraulic Proportional Control Variable Mechanism of Axial Piston Hydraulic Pump

文章论述了轴向柱塞液压泵的电液比例控制的变量机构,阐述了它的组成及工作原理,说明了它是一个闭环位置控制系统;它由电子放大器、二位二通电液比例阀、差动活塞、减压阀和位移传感器等构成,该系统的输入量是输入给比例阀的电信号,输出量是差动活塞的行程位移,差动活塞的行程与输给比例阀的电信号成比例的变化,由于液压泵排量是与差动活塞的行程成比例的,因此液压泵的排量就与输入给比例阀的电信号成比例,具有广泛的应用前景。

This paper discusses the electro-hydraulic proportional control variable mechanism of the axial plunger hydraulic pump developed by the author,expounds its composition and working principle,and explains that it is a closed-loop position control system.It consists of an electronic amplifier,a two-position two-way electro-hydraulic proportional valve,a differential piston,a reducing valve and a displacement sensor.The input of the system is the electrical signal input to the proportional valve,and the output is the stroke displacement of the differential piston.The stroke of the differential piston is proportional to the telecommunication number supplied to the proportional valve.Because the displacement of the hydraulic pump is proportional to the stroke of the differential piston,the displacement of the hydraulic pump is proportional to the telecommunication number inputted to the proportional valve,so it has a wide range of application prospects.