Distinguishability study of 3-Mass Models for Electromechanical Motion Systems

verfasst von

Mathias Tantau, Christian Helmke, Lars Perner, Mark Wielitzka

Abstract

Physically motivated models of electromechanical motion systems are required in several applications related to control design and auto-tracking, model-based fault detection, feed-forward, and simply interpretation. However, attempts to create such models automatically via structure and parameter identification struggle with ambiguities regarding the correct internal structure of the model. Designing a reasonable set of candidate models is difficult, because it is not known which models are distinguishable andwhich are not. This paper gives a simple to use necessary condition for indistinguishability of multiple mass models as they are used to model the control-relevant features of motion systems. In an automated way models are generated that can be created by considering elasticities at different positions in themechanical structures. The condition is applied to thesemodels for the case of three masses. In three examples it is shown that the criterion simplifies the subsequent structure and parameter identification considerably by reducing the number of possible models. For higher numbers of masses, however, it would become intractable.

Organisationseinheit(en)

Institut für Mechatronische Systeme

Externe Organisation(en)

Lenze SE

Typ

Artikel

Journal

International Journal of Modelling, Identification and Control (IJMIC)

Band

36

Seiten

175-187

Anzahl der Seiten

13

Publikationsdatum

2020

Publikationsstatus

Veröffentlicht

Peer-reviewed

Ja

ASJC Scopus Sachgebiete

Angewandte Mathematik, Angewandte Informatik, Modellierung und Simulation

Elektronische Version(en)

https://doi.org/10.15488/11342 (Zugang: Offen)
https://doi.org/10.1504/IJMIC.2020.116913 (Zugang: Geschlossen)