onr:"swepub:oai:DiVA.org:kth-72583"
Search: onr:"swepub:oai:DiVA.org:kth-72583" > On the convergence ...
- 1 of 1
- Previous record
- Next record
- To hitlist
On the convergence of the Prediction Error Method to its global minimum
- Eckhard, Diego (author)
- Bazanella, Alexandre S. (author)
-
- Rojas, Cristian R., 1980- (author)
- KTH,Reglerteknik,ACCESS Linnaeus Centre,System Identification Group
- show more...
- show less...
- (creator_code:org_t)
- IFAC, 2012
- 2012
- English.
- In: 16th IFAC Symposium on System Identification. - : IFAC. - 9783902823069 ; , s. 698-703
- Conference paper (peer-reviewed)
Abstract
Subject headings
Close
- The Prediction Error Method (PEM) is related to an optimization problem built on input/output data collected from the system to be identified. It is often hard to find the global solution of this optimization problem because the corresponding objective function presents local minima and/or the search space is constrained to a nonconvex set. The existence of local minima, and hence the difficulty in solving the optimization, depends mainly on the experimental conditions, more specifically on the spectrum of the input/output data collected from the system. It is therefore possible to avoid the existence of local minima by properly choosing the spectrum of the input; in this paper we show how to perform this choice. We present sufficient conditions for the convergence of PEM to the global minimum and from these conditions we derive two approaches to avoid the existence of nonglobal minima. We present the application of one of these two approaches to a case study where standard identification toolboxes tend to get trapped in nonglobal minima.
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
- Convergence
- Gradient methods
- Identification
Publication and Content Type
- ref (subject category)
- kon (subject category)
Find in a library
- 16th IFAC Symposium on System Identification (Search for host publication in LIBRIS)
To the university's database
- 1 of 1
- Previous record
- Next record
- To hitlist
Find more in SwePub
- By the author/editor
- Eckhard, Diego
- Bazanella, Alexa ...
- Rojas, Cristian ...
- Hjalmarsson, Håk ...
- About the subject
-
- ENGINEERING AND TECHNOLOGY
- ENGINEERING AND ...
- and Electrical Engin ...
- and Control Engineer ...
- Articles in the publication
- 16th IFAC Sympos ...
- By the university
- Royal Institute of Technology
Search outside SwePub
- Extend your search to:
- Google Book Search
- Google Scholar
Kungliga biblioteket hanterar dina personuppgifter i enlighet med EU:s dataskyddsförordning (2018), GDPR. Läs mer om hur det funkar här.
Så här hanterar KB dina uppgifter vid användning av denna tjänst.
- Copyright © LIBRIS - National Library Systems
- LIBRIS.kb.se
