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Zbl 0934.93019
Forssell, Urban; Ljung, Lennart
Closed-loop identification revisited. (English)
[J] Automatica 35, No.7, 1215-1241 (1999). ISSN 0005-1098

The paper deals with the identification of multiple-input multiple-output (MIMO) systems operating in closed loop under, in general, linear, time-invariant feedback. The leading idea in the paper is to provide a unified framework for the prediction error methods. The paper locates the common approaches in a coherent setting and shows the connections, similarities and differences in the asymptotic behaviour of the particular estimates. It is shown that most of the methods correspond to different parameterizations of the dynamics and noise models. In effect, specific asymptotic statistical properties of the estimates are derived from the general convergence theory for particular parameterizations. A comparative study of the different methods is given and a summarizing discussion is presented.
[Z.Hasiewicz (Wrocław)]

MSC 2000:: *93B30 System identification
93E12 System identification (stochastic systems)

Keywords: closed-loop identification

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