Design of high-performance networked real-time control systems

Wen, Peng and Cao, Jiannong and Li, Yan (2007) Design of high-performance networked real-time control systems. IET Control Theory and Applications, 1 (5). pp. 1329-1335. ISSN 1751-8644

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Abstract

The performance of a networked control system (NCS) is affected directly and indirectly by time delays generated in network communication. This paper addresses these time delays, their effects on system performance, and the measures taken in an NCS design. For a time delay which is random but less than one sampling interval T, we model the system as a time-invariant control system with constant time delay T. For a time delay which is random and greater than one sampling interval T, we consider the system as a control system with packet drop and model it as a jump linear control system. Based on the above models, we propose a systematic method to improve the control system quality of performance by choosing a proper sampling interval to reduce data transmission, optimally scheduling to minimize packet loss and optimizing controller design in case of packet loss. The simulation results in lab experiments demonstrate that the design method results in high performance in networked real-time control system.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: Author's version deposited in accordance with the copyright policy of the publisher. This paper is a postprint of a paper submitted to and accepted for publication in IET Control Theory and Applications and is subject to Institution of Engineering and Technology Copyright. The copy of record is available at IET Digital Library.
Depositing User: Dr Yan Li
Faculty / Department / School: Historic - Faculty of Sciences - Department of Maths and Computing
Date Deposited: 11 Oct 2007 01:22
Last Modified: 02 Jul 2013 22:50
Uncontrolled Keywords: Real-time system, networked control system, time delay, packet drop, optimal control
Fields of Research (FOR2008): 10 Technology > 1005 Communications Technologies > 100503 Computer Communications Networks
Identification Number or DOI: doi: 10.1049/iet-cta:20060424
URI: http://eprints.usq.edu.au/id/eprint/3194

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