Semi-intrusive multivariable model invalidation

TitleSemi-intrusive multivariable model invalidation
Publication TypeJournal Article
Year of Publication2003
AuthorsKammer, L. C., D. Gorinevsky, and G. A. Dumont
Date PublishedAUG
Type of ArticleProceedings Paper
Keywordsmodel invalidation, model uncertainty, model-based control, multivariable control systems, PERFORMANCE MONITORING, stochastic noise

This paper introduces a mechanism for testing multivariable models employed by model-based controllers. Although external excitation is not necessary, the data collection includes a stage where the controller is switched to open-loop operation (manual mode). The main idea is to measure a certain ``distance{''} between the closed-loop and the open-loop signals, and then trigger a flag if this ``distance{''} is larger than a threshold level. Moreover, a provision is made for accommodating model uncertainty. Since no hard bounds are assumed with respect to the noise amplitude, the model invalidation mechanism works in a probabilistic framework. (C) 2003 Elsevier Ltd. All rights reserved.


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