基于无线网络状态时延的控制器性能研究

作者：滕永勤,刘锋 日期：2009-06-17/span> 浏览：3691 查看PDF文档

基于无线网络状态时延的控制器性能研究

滕永勤,刘锋
（浙江省环境保护科学设计研究院,浙江 杭州 310007）

摘要：为了研究无线网络控制系统在不同网络负载下时延对系统性能的影响，首先根据无线网络负载状态对网络时延进行分析，给出系统的数学模型，并结合网络负载状态对系统模型作了分析，然后给出了控制器性能指标，利用DLQR（离散线性二次最优设计）方法优化控制器，并就时延对控制性能的影响进行了分析，实现了通过对网络负载状态的调节使系统控制器性能达到最优。最后应用数学模型，通过仿真验证了该研究方法和结果的有效性。
关键词：无线网络；负载状态；时延；性能指标；优化
中图分类号：TP393文献标识码：A文章编号：1001-4551(2009)05-0066-04

Controller performance based on wireless network states time delays
TENG Yongqin, LIU Feng
(Environmental Science Research & Design Institute of Zhejiang Province, Hangzhou 310007, China)
Abstract: Aiming at studying the effect of control systems performance in the present of delays based on the different networkload state in wireless networked control systems. Firstly，based on wireless networkloads state, network delays were analyzed, then a mathematical model with network delays was presented and further analyzed over network loads state. And then, control performance index was proposed, and the controller was optimized by using Discrete Linear Quadratic Regulator(DLQR) methods. Meanwhile, the influence of time deiays for control performance was analyzed. Finally, simulation results show that the mean and the result of the study are valid by a model.
Key words: wireless network; load state; delays; performance index; optimization
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