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Robust identification of strongly stabilizable systems

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2 Author(s)
Makila, Pertti M. ; Dept. of Swedish Univ. of Abo., Finland ; Partington, J.R.

For strongly stabilizable systems for which a strongly stabilizing controller is known approximately, the authors consider system identification in the graph, gap, and chordal metrics using robust H identification of the closed-loop transfer function in the framework proposed by A.J. Helmicki et al. (1990). Error bounds are derived showing that robust convergence is guaranteed and that the identification can be satisfactorily combined with a model reduction step. Two notions of robust identification of stable systems are compared, and an alternative robust identification technique based on smoothing, which can be used to yield polynomial models directly, is developed

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Automatic Control, IEEE Transactions on  (Volume:37 ,  Issue: 11 )