直驱式电液伺服压力控制系统理论研究与仿真

Theoretical Study and Simulation Experiment of Direct Drive Electro-hydraulic Serve Pressure Control System

直驱式电液伺服系统具有调速范围宽、抗污染能力强、可靠性高、易于实现计算机远程控制等优点,适用于频响低,低速性能要求不太高的伺服控制场合。分析了直驱式电液伺服压力控制系统的工作原理,建立了此类控制系统的数学模型,并按照实际工作参数,分别对系统的稳定性、响应特性和稳态精度进行仿真试验。结果表明,系统具有良好的稳定性、快速响应,且具有较高的稳态精度,其缺点是频率响应不高。

Direct drive electro-hydraulic servo system has the advantages of wide speed range, strong contamination resistance, high reliability, computer remote control easy to realize, etc. It is suitable for servo control applications which has low frequency response, and not too high low-speed performance.This article describes the principle of direct drive servo pressure control system, establishes such a control system mathematical model and study the stability, response characteristics, and steady-state accuracy of system simulation. The results show that the system has good stability, rapid response, and high steady-state accuracy, and the drawback is that its frequency response is not high.