Errors-in-variables methods in system identification |
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Authors: | Torsten Söderström [Author Vitae] |
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Affiliation: | Department of Information Technology, Division of Systems and Control, Uppsala University, Uppsala, Sweden |
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Abstract: | The paper gives a survey of errors-in-variables methods in system identification. Background and motivation are given, and examples illustrate why the identification problem can be difficult. Under general weak assumptions, the systems are not identifiable, but can be parameterized using one degree-of-freedom. Examples where identifiability is achieved under additional assumptions are also provided. A number of approaches for parameter estimation of errors-in-variables models are presented. The underlying assumptions and principles for each approach are highlighted. |
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Keywords: | System identification Errors-in-variables Parameter estimation Identifiability Consistency |
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