Modelling and Prediction of Random Delays in NCSs Using Double-Chain HMMs
Joint Authors
Ge, Yuan
Gao, Wengen
Yu, Nuo
Wu, Jincenzi
Zhang, Yan
Cheng, Fanyong
Source
Discrete Dynamics in Nature and Society
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-10-29
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
This paper is concerned with the modelling and prediction of random delays in networked control systems.
The stochastic distribution of the random delay in the current sampling period is assumed to be affected by the network state in the current sampling period as well as the random delay in the previous sampling period.
Based on this assumption, the double-chain hidden Markov model (DCHMM) is proposed in this paper to model the delays.
There are two Markov chains in this model.
One is the hidden Markov chain which consists of the network states and the other is the observable Markov chain which consists of the delays.
Moreover, the delays are also affected by the hidden network states, which constructs the DCHMM-based delay model.
The initialization and optimization problems of the model parameters are solved by using the segmental K-mean clustering algorithm and the expectation maximization algorithm, respectively.
Based on the model, the prediction of the controller-to-actuator (CA) delay in the current sampling period is obtained.
The prediction can be used to design a controller to compensate the CA delay in the future research.
Some comparative experiments are carried out to demonstrate the effectiveness and superiority of the proposed method.
American Psychological Association (APA)
Ge, Yuan& Zhang, Yan& Gao, Wengen& Cheng, Fanyong& Yu, Nuo& Wu, Jincenzi. 2020. Modelling and Prediction of Random Delays in NCSs Using Double-Chain HMMs. Discrete Dynamics in Nature and Society،Vol. 2020, no. 2020, pp.1-16.
https://search.emarefa.net/detail/BIM-1153351
Modern Language Association (MLA)
Ge, Yuan…[et al.]. Modelling and Prediction of Random Delays in NCSs Using Double-Chain HMMs. Discrete Dynamics in Nature and Society No. 2020 (2020), pp.1-16.
https://search.emarefa.net/detail/BIM-1153351
American Medical Association (AMA)
Ge, Yuan& Zhang, Yan& Gao, Wengen& Cheng, Fanyong& Yu, Nuo& Wu, Jincenzi. Modelling and Prediction of Random Delays in NCSs Using Double-Chain HMMs. Discrete Dynamics in Nature and Society. 2020. Vol. 2020, no. 2020, pp.1-16.
https://search.emarefa.net/detail/BIM-1153351
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1153351