Multirate control with incomplete information over Profibus-DP network

J. Salt, V. Casanova, A. Cuenca and R. Pizá

International Journal of Systems Science, 2014, vol. 45, issue 7, 1589-1605

Abstract: When a process field bus-decentralized peripherals (Profibus-DP) network is used in an industrial environment, a deterministic behaviour is usually claimed. However, due to some concerns such as bandwidth limitations, lack of synchronisation among different clocks and existence of time-varying delays, a more complex problem must be faced. This problem implies the transmission of irregular and, even, random sequences of incomplete information. The main consequence of this issue is the appearance of different sampling periods at different network devices. In this paper, this aspect is checked by means of a detailed Profibus-DP timescale study. In addition, in order to deal with the different periods, a delay-dependent dual-rate proportional-integral-derivative control is introduced. Stability for the proposed control system is analysed in terms of linear matrix inequalities.

Date: 2014
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DOI: 10.1080/00207721.2013.844286

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