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Decentralised Hierarchical Multi-rate Control of Large-Scale Drinking Water Networks

  • Ajay Kumar Sampathirao
  • Pantelis SopasakisEmail author
  • Alberto Bemporad
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 8985)

Abstract

We propose a decentralised hierarchical multi-rate control scheme for the control of large-scale systems with state and input constraints. The large-scale system is partitioned into sub-systems each one of which is locally controlled by a stabilising linear controller which does not account for the prescribed constraints. A higher-layer controller commands reference signals at a lower uniform sampling frequency so as to enforce linear constraints on the process variables. Worst-case subsystem interactions are modeled and accounted for in a robust manner. By optimally constraining the magnitude and rate of variation of the reference signals to each lower-layer controller we prove that closed-loop stability is preserved and the fulfillment of the prescribed constraints is guaranteed. We apply the proposed methodology to Johansson’s quadraple-tank system and we compare it to a centralised control approach.

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Copyright information

© Springer International Publishing Switzerland 2016

Authors and Affiliations

  • Ajay Kumar Sampathirao
    • 1
  • Pantelis Sopasakis
    • 1
    Email author
  • Alberto Bemporad
    • 1
  1. 1.IMT Institute for Advanced StudiesLuccaItaly

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