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Auto-tuning cascade loops subject to saturation

Butt, AS and Maciejowski, JM and McNaughton, HM (2010) Auto-tuning cascade loops subject to saturation. IFAC Proceedings Volumes (IFAC-PapersOnline), 43. pp. 191-195. ISSN 1474-6670

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Auto-tuning of outer-loop (master) controllers for cascade feedback loops runs into considerable problems if the inner-loop (slave) controller is liable to saturate. We explain how these problems arise, and propose a modified auto-tuning procedure to overcome these problems. Two enhancements of the inner-loop controller are proposed, which prevent this controller from saturating, and a correspondingly modified method of analysing the resulting data and determining PID controller parameters is presented. The efficacy of these proposals is illustrated on a realistic example. © 2010 IFAC.

Item Type: Article
Divisions: Div F > Control
Depositing User: Cron Job
Date Deposited: 17 Jul 2017 19:06
Last Modified: 03 Aug 2021 07:43
DOI: 10.3182/20100826-3-tr-4015.00037