Model Selection for Servo Control Systems

verfasst von

Mathias Tantau, Lars Perner, Mark Wielitzka

Abstract

Physically motivated models of electromechanical motion systems are required in several applications related to control design. However, the effort of modelling is high and automatic modelling would be appealing. The intuitive approach to select the model with the best fit has the shortcoming that the chosen model may be one with high complexity in which some of the parameters are not identiifable or uncertain. Also, ambiguities in selecting the model structure would lead to false conclusions. This paper proposes a strategy for frequency domain model selection ensuring practical identifiability. Also, the paper describes distinguishability analysis of candidate models utilising transfer function coecients and Markov parameters. Model selection and distinguishability analysis are applied to a class of models as they are commonly used to describe servo control systems. It is shown in experiments on an industrial stacker crane that model selection works with little user interaction, except from defining normalised hyperparameters.

Organisationseinheit(en)

Institut für Mechatronische Systeme

Externe Organisation(en)

Lenze SE

Typ

Artikel

Journal

International Journal of Mechatronics and Automation

Band

8

Seiten

111-125

Anzahl der Seiten

15

ISSN

2045-1059

Publikationsdatum

21.10.2021

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Computational Mathematics, Artificial intelligence, Elektrotechnik und Elektronik, Steuerungs- und Systemtechnik, Wirtschaftsingenieurwesen und Fertigungstechnik, Numerische Mechanik

Elektronische Version(en)

https://doi.org/10.15488/11498 (Zugang: Befristet gesperrt)
https://doi.org/10.1504/IJMA.2021.118426 (Zugang: Geschlossen)