基于互联网的液压远程控制系统延时预测算法研究

A Study on the Forecast Arithmetic of Hydraulic Telecontrol System Based on Internet

为了解决不确定性变化的网络延时对基于互联网的液压远程控制系统性能的影响 ,在系统中设计了补偿器结构解决网络延时问题 ,同时采用延时预测算法解决网络延时不确定性变化的问题 ,以改善系统的动态性能和保持系统的稳定性 .仿真研究表明 ,采用补偿器结构和延时预测算法能够在保证系统稳定性的同时有效地降低系统的超调量 ,缩短系统的过渡过程 .

A compensator is designed in a hydraulic telecontrol system based on Internet in order to improve the system performance affected by internet induced time delays in both forward loop and feedback loop. Forecast arithmetic such as the reason rule table method and the average value method are made use of in order to keep the system have a fine performance when the change of time delay is uncertain. The simulation shows that compensators and forecast arithmetic are effective both to keep the system stable and to limit the system overshoot and shorten the system's transient behavior.