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BP neural network prediction-based variable-period sampling approach for networked control systems
Yi, Jianqiang; Wang, Qian; Zhao, Dongbin; Wen, John T.
2007-02-15
发表期刊APPLIED MATHEMATICS AND COMPUTATION
卷号185期号:2页码:976-988
文章类型Article
摘要The biggest problem that networked control systems face is the random time-varying delay, which often causes system instability and even collapse. Aiming at this problem, a new modeling scheme for the networked control systems, motivated from a variable-period sampling approach, is presented in this paper. Here, the time delay to occur at current sampling step is taken as the sampling period between current sampling step and next sampling step. To predict online the time delay induced in the networked control systems, a BP feedforward neural network is adopted and the training algorithm of the BP neural network is given. To make the BP neural network adapt to the changing environment of the networked control systems and improve its prediction accuracy, the BP neural network is designed to further update according to its prediction error after each prediction. At each sampling step, good approximation to actual time delay becomes available and different sampling period is obtained. Control simulations using the variable sampling period and fixed sampling period are compared. Simulation results show that this new approach can alleviate the influence of time delay to the greatest extent and improve the performance of the networked control systems. (c) 2006 Elsevier Inc. All rights reserved.
关键词Bp Algorithm Control Networked Control System Neural Network Modeling Prediction Sampling
WOS标题词Science & Technology ; Physical Sciences
收录类别SCI ; ISTP
语种英语
WOS研究方向Mathematics
WOS类目Mathematics, Applied
WOS记录号WOS:000245762700020
引用统计
文献类型期刊论文
条目标识符http://ir.ia.ac.cn/handle/173211/9419
专题09年以前成果
通讯作者Yi, Jianqiang
作者单位1.Chinese Acad Sci, Inst Automat, Lab Complex Syst & Intelligence Sci, Beijing 100080, Peoples R China
2.Techfaith Wireless Commun Technol Beijing Co Ltd, Beijing 100016, Peoples R China
3.Rensselaer Polytech Inst, Dept Elect Comp & Syst Engn, Troy, NY 12180 USA
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Yi, Jianqiang,Wang, Qian,Zhao, Dongbin,et al. BP neural network prediction-based variable-period sampling approach for networked control systems[J]. APPLIED MATHEMATICS AND COMPUTATION,2007,185(2):976-988.
APA Yi, Jianqiang,Wang, Qian,Zhao, Dongbin,&Wen, John T..(2007).BP neural network prediction-based variable-period sampling approach for networked control systems.APPLIED MATHEMATICS AND COMPUTATION,185(2),976-988.
MLA Yi, Jianqiang,et al."BP neural network prediction-based variable-period sampling approach for networked control systems".APPLIED MATHEMATICS AND COMPUTATION 185.2(2007):976-988.
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