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Blind Nonparametric Estimation of SISO Continuous-time Systems
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- Elton, Augustus (author)
- School of Engineering, University of Newcastle, Callaghan, Australia
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- González, Rodrigo A. (author)
- Department of Mechanical Engineering, Eindhoven University of Technology, Eindhoven, The Netherlands
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- Welsh, James S. (author)
- School of Engineering, University of Newcastle, Callaghan, Australia
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- Elsevier BV, 2023
- 2023
- English.
- In: IFAC-PapersOnLine. - : Elsevier BV. ; , s. 4222-4227
- Conference paper (peer-reviewed)
Abstract
Subject headings
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- Blind system identification is aimed at finding parameters of a system model when the input is inaccessible. In this paper, we propose a blind system identification method that delivers a single-input single-output, continuous-time model in a nonparametric kernel form. We take advantage of the representer theorem to form a joint maximum a posteriori estimator of the input and system impulse response. The identified system model and input are optimised in sequence to overcome the blind problem with generalised cross validation used to select appropriate hyperparameters given some fixed input sequence. We demonstrate via Monte Carlo simulations the accuracy of the method in terms of estimating the input.
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
- Continuous-time system identification
- Identifiability
- Nonparametric methods
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