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Consistent identifi...
Consistent identification of continuous-time systems under multisine input signal excitation
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- González, Rodrigo A. (author)
- KTH,Reglerteknik
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- Rojas, Cristian R., 1980- (author)
- KTH,Reglerteknik
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- Pan, Siqi (author)
- Univ Newcastle, Sch Elect Engn & Comp, Callaghan, NSW 2308, Australia.
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- Welsh, James S. (author)
- Univ Newcastle, Sch Elect Engn & Comp, Callaghan, NSW 2308, Australia.
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- English.
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In: Automatica. - : Elsevier BV. - 0005-1098 .- 1873-2836. ; 133
- Related links:
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https://doi.org/10.1...
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Abstract
Subject headings
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- For many years, the Simplified Refined Instrumental Variable method for Continuous-time systems (SRIVC) has been widely used for identification. The intersample behaviour of the input plays an important role in this method, and it has been shown recently that the SRIVC estimator is not consistent if an incorrect assumption on the intersample behaviour is considered. In this paper, we present an extension of the SRIVC algorithm that is able to deal with continuous-time multisine signals, which cannot be interpolated exactly through hold reconstructions. The proposed estimator is generically consistent for any input reconstructed through zero or first-order-hold devices, and we show that it is generically consistent for continuous-time multisine inputs as well. The statistical performance of the proposed estimator is compared to the standard SRIVC estimator through extensive simulations.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Reglerteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Control Engineering (hsv//eng)
Keyword
- System identification
- Continuous-time systems
- Instrumental variable method
- Consistency
Publication and Content Type
- ref (subject category)
- art (subject category)
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