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网络控制系统中随机传输时延的预测补偿研究

余世明 杨马英 俞立

余世明, 杨马英, 俞立. 网络控制系统中随机传输时延的预测补偿研究. 自动化学报, 2005, 31(2): 231-238.
引用本文: 余世明, 杨马英, 俞立. 网络控制系统中随机传输时延的预测补偿研究. 自动化学报, 2005, 31(2): 231-238.
YU Shi-Ming, YANG Ma-Ying, YU Li. Predictive Compensation for Stochastic Time Delay in Network Control Systems. ACTA AUTOMATICA SINICA, 2005, 31(2): 231-238.
Citation: YU Shi-Ming, YANG Ma-Ying, YU Li. Predictive Compensation for Stochastic Time Delay in Network Control Systems. ACTA AUTOMATICA SINICA, 2005, 31(2): 231-238.

网络控制系统中随机传输时延的预测补偿研究

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    通讯作者:

    余世明

Predictive Compensation for Stochastic Time Delay in Network Control Systems

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    Corresponding author: YU Shi-Ming
  • 摘要: This paper proposes a predictive compensation strategy to reduce the detrimental effect of stochastic time delays induced by communication networks on control performance. Values of a manipulated variable at the present sampling instant and future time instants can be determined by performing a receding horizon optimal procedure only once. When the present value of the manipulated variable does not arrive at a smart actuator, its predictive one is imposed to the corresponding process. Switching of a manipulated variable between its true present value and the predictive one usually results in unsmooth operation of a control system. This paper shows: 1) for a steady process, as long as its input is sufficiently smooth, the smoothness of its output can be guaranteed; 2) a manipulated variable can be switched smoothly by filtering the manipulated variable just using a simple low-pass filter. Thus the control performance can be improved. Finally, the effectiveness of the proposed method is demonstrated by simulation study.
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出版历程
  • 收稿日期:  2003-02-10
  • 修回日期:  2003-12-15
  • 刊出日期:  2005-03-20

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