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  4. Guaranteed parameter estimation of non-linear dynamic systems using high-order bounding techniques with domain and CPU-time reduction strategies
 
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Guaranteed parameter estimation of non-linear dynamic systems using high-order bounding techniques with domain and CPU-time reduction strategies
File(s)
revision-R2.pdf (1.02 MB)
Accepted version
Author(s)
Paulen, R
Villanueva, ME
Chachuat, B
Type
Journal Article
Abstract
This paper is concerned with guaranteed parameter estimation of non-linear dynamic systems in a context of bounded measurement error. The problem consists of finding - or approximating as closely as possible - the set of all possible parameter values such that the predicted values of certain outputs match their corresponding measurements within prescribed error bounds. A set-inversion algorithm is applied, whereby the parameter set is successively partitioned into smaller boxes and exclusion tests are performed to eliminate some of these boxes, until a given threshold on the approximation level is met. Such exclusion tests rely on the ability to bound the solution set of the dynamic system for a finite parameter subset, and the tightness of these bounds is therefore paramount; equally important in practice is the time required to compute the bounds, thereby defining a trade-off. In this paper, we investigate such a trade-off by comparing various bounding techniques based on Taylor models with either interval or ellipsoidal bounds as their remainder terms. We also investigate the use of optimization-based domain reduction techniques in order to enhance the convergence speed of the set-inversion algorithm, and we implement simple strategies that avoid recomputing Taylor models or reduce their expansion orders wherever possible. Case studies of various complexities are presented, which show that these improvements using Taylor-based bounding techniques can significantly reduce the computational burden, both in terms of iteration count and CPU time.
Date Issued
2015-01-27
Date Acceptance
2014-12-06
Citation
IMA Journal of Mathematical Control and Information, 2015, 33 (3), pp.563-587
URI
http://hdl.handle.net/10044/1/41686
DOI
https://www.dx.doi.org/10.1093/imamci/dnu055
ISSN
0265-0754
Publisher
Oxford University Press (OUP)
Start Page
563
End Page
587
Journal / Book Title
IMA Journal of Mathematical Control and Information
Volume
33
Issue
3
Copyright Statement
This is a pre-copyedited, author-produced PDF of an article accepted for publication in IMA Journal of Mathematical Control and Information following peer review. The version of record Radoslav Paulen, Mario E. Villanueva, and Benoît Chachuat
Guaranteed parameter estimation of non-linear dynamic systems using high-order bounding techniques with domain and CPU-time reduction strategies
IMA J Math Control Info (2016) 33 (3): 563-587 first published online January 27, 2015 is available online at: https://dx.doi.org/10.1093/imamci/dnu055
Sponsor
Commission of the European Communities
Grant Number
PCIG9-GA-2011-293953
Subjects
Industrial Engineering & Automation
0102 Applied Mathematics
0103 Numerical And Computational Mathematics
Publication Status
Published
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