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Frequency data-based procedure to adjust gain and phase margins and guarantee the uniqueness of crossover frequencies

Sayyaf, N ; Sharif University of Technology | 2020

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  1. Type of Document: Article
  2. DOI: 10.1109/TIE.2019.2905814
  3. Publisher: Institute of Electrical and Electronics Engineers Inc , 2020
  4. Abstract:
  5. Analytical data-driven tuning procedures with the aim of adjusting the values of frequency-domain specifications, e.g., gain margin, phase margin, and corresponding crossover frequencies, are among the most popular control techniques in industrial control. But, the multiplicity of crossover frequencies, as an Achilles' heel in these procedures, may cause that the obtained control system does not meet the intended frequency-domain objectives. Motivated by this fact, this paper improves a newly proposed data-driven tuning procedure for arbitrarily setting the values of gain and phase margins and crossover frequencies, in the viewpoint of guaranteeing the uniqueness of crossover frequencies. This improvement is done by analytically deriving some sufficient conditions for ensuring the uniqueness of gain and phase crossover frequencies in the under-study control system. The hardware-in-the-loop experimental results are presented to validate the importance and efficiency of the improved tuning procedure. © 1982-2012 IEEE
  6. Keywords:
  7. Data-driven tuning method ; Gain margin ; Phase margin ; Uniqueness of crossover frequencies ; Control systems ; Control techniques ; Cross-over frequencies ; Gain and phase margin ; Gain margin ; Hard-ware-in-the-loop ; Industrial controls ; Phase margins ; Tuning method ; Frequency domain analysis
  8. Source: IEEE Transactions on Industrial Electronics ; Volume 67, Issue 3 , 2020 , Pages 2176-2185
  9. URL: https://ieeexplore.ieee.org/document/8672943