基于Smith预估补偿的网络控制系统仿真研究  

Simulation of networked control system based on Smith prediction compensation

作　　者：张海涛[1] 李珍[1] 

机构地区：[1]河南科技大学电子信息工程学院,河南洛阳471003

出　　处：《计算机工程与应用》2012年第8期243-245,共3页Computer Engineering and Applications

摘　　要：针对网络控制系统中前向通道和反馈通道同时存在随机延迟的问题,提出了一种基于神经元控制器的Smith预估器的设计方案。利用根轨迹法分析了随机延迟对网络控制系统稳定性的影响。结合不完全微分先行PID控制算法,建立了Smith预估模型,在模型不完全匹配的情况下得到较好的控制性能。以直流电机为被控对象进行仿真研究,仿真结果表明该方法的有效性。To the question of networked control system with random time-delay in both forward and feedback channels. A class of Smith predictor based on neuron controller is presented. With root locus method, the influences of network delay on the control system stability are analyzed. Combined with incomplete derivative-forward PID control algorithm, Smith prediction model is established. Bet- ter control performance is gotten in case of the Smith predictor model miss-matching. Simulation is researched on a DC motor. The sim- ulation results show the effectiveness of the proposed method.

关 键 词：网络控制系统 SMITH预估控制 不完全微分先行PID 

分 类 号：TP273[自动化与计算机技术—检测技术与自动化装置]