对电液比例阀几个基本问题的讨论

Discussion on Some Basic Problems of Electro-hydraulic Proportion Control Component

电液比例阀是机电一体化液压控制系统的重要控制元件。对其基本原理的弄清有助于对其正确使用并提升电液比例控制系统的性能。文中针对电机械转换元件阀口开度控制原理及特性分析和比例放大器控制信号及PWM信号频率大小对阀口性能的影响进行了分析讨论,获得了一些有意义的结论。

Electro-hydraulic proportional control valve is an important control component to be applied to electro-mechanical integration hydraulic control system. To understand its basic principle can help to appropriately use it and to enhance the performance of the electro-hydraulic proportional control system. Addressed the control principle, modeling and simulation for the valve opening of the proportional valve, and the influence of the control signal of proportion amplifier and the frequency of PWM signal on the control performance of the valve opening, the analysis and discussion were carried out in the paper, and some significant conclusions were acquired.