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Closed-loop performance diagnosis using prediction error identification

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4 Author(s)
Mesbah, A. ; Delft Center for Syst. & Control, Delft Univ. of Technol., Delft, Netherlands ; Bombois, X. ; Ludlage, J.H.A. ; Van den Hof, P.M.J.

This paper presents a methodology to detect the origin of closed-loop performance degradation of model-based control systems. The approach exploits the statistical hypothesis testing framework. The decision rule consists of examining if an identified model of the true system lies in a set containing all models that fulfill the closed-loop performance requirements. This allows us to determine whether performance degradation arises from changes in system dynamics or from variations in disturbance characteristics. The probability of making an erroneous decision is estimated a posteriori using the known distribution of the identified model with respect to the unknown true system.

Published in:

Decision and Control and European Control Conference (CDC-ECC), 2011 50th IEEE Conference on

Date of Conference:

12-15 Dec. 2011