“Finding feedforward configurations using gramian based interaction measures”

Authors: Fredrik Bengtsson and Torsten Wik,
Affiliation: Chalmers University of Technology
Reference: 2021, Vol 42, No 1, pp. 27-35.

Keywords: Process control, input-output pairing, interaction matrix, control configuration selection, sparse control, feedforward

Abstract: A sparse control structure can be seen as a decentralised controller that is expanded to include feedforward or MIMO blocks. Here, use of the gramian based interaction measures to determine a sparse control structure with feedforward is examined. A modification to the method used today is proposed and it is demonstrated that it results in a considerable improvement. Furthermore, recently proposed modifications to scaling gramian based measures are expanded to also cover sparse control structures. We show that the method that yields the best result is when two different scaling methods are combined, using one to design a decentralized controller and another to find feedforward connections.

PDF PDF (599 Kb)        DOI: 10.4173/mic.2021.1.3

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  title={{Finding feedforward configurations using gramian based interaction measures}},
  author={Bengtsson, Fredrik and Wik, Torsten},
  journal={Modeling, Identification and Control},
  publisher={Norwegian Society of Automatic Control}