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一类具有随机时延的网络化控制系统的广义预测控制 被引量：3

Generalized Predictive Control Method for Networked Control System with Random Time Delay
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摘要 网络化控制系统中,各种恒定、时变或者随机的网络时延会导致系统控制性能的下降甚至不稳定。针对基于交换式以太网所造成的随机网络时延问题,结合对系统结构及时延特征的分析,给出了一种基于广义预测控制的控制方法,该方法采用网络时间戳机制和模型的在线辨识,能够准确地测量系统输出并及时对预测值进行在线修正,实现对随机时延的网络化控制系统的有效控制。最后通过仿真验证了该方法的有效性。 Various constant or time-varying, and even random network time delays can usually deteriorate the control performance and stability of networked control systems. According to the analysis of the system structure and random time delay induced by switched Ethernet, a control strategy based on generalized predictive control is proposed for networked control systems. The timestamping mechanism of data and online identification method of model are applied to the presented strategy. Accurate measurement to the system output and timely modification of the predictive value are both ensured. Finally, the validity of control strategy is confirmed by the simulation.
作者 傅磊 戴冠中
机构地区 西北工业大学自动化学院
出处 《测控技术》 CSCD 2007年第9期29-32,共4页 Measurement & Control Technology
关键词 网络化控制系统 交换式以太网 网络时延 时间戳 广义预测控制 networked control system switched Ethernet network time delay time stamping generalized predictive control
分类号 TP273 [自动化与计算机技术—检测技术与自动化装置] TP393 [自动化与计算机技术—计算机应用技术]
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参考文献13

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二级参考文献7

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共引文献5

同被引文献19

引证文献3

二级引证文献3

测控技术
2007年 第9期

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