Excitation Signal Design for Generating Optimal Training Data for Complex Dynamic Systems

Autor: Edward Winward, Zhijia Yang, Byron Mason, Mark Cary
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: IEEE Access, Vol 10, Pp 8653-8663 (2022)
Druh dokumentu: article
ISSN: 2169-3536
DOI: 10.1109/ACCESS.2021.3138166
Popis: The appropriate choice of excitation signal in system identification is an important part of the process that determines the success of many downstream activities. For a complex system with high dimensional nonlinear behaviour, excitation signal design is non-trivial. This paper presents a novel methodology for excitation signal design to create high accuracy multivariable nonlinear dynamic neuro-fuzzy models. Two different approaches to experimental design are investigated. In the first, a prescribed transient manoeuvre is used. In the second, informative potential is used to deconstruct the transient into a sequence of inputs designed to cover the same input space and reduce model development time. Star discrepancy is used to evaluate the resulting designs and is shown to provide a good proxy for excitation design quality. Results are presented showing the prediction accuracy of the model in terms of an application example, achieving a minimum
Databáze: Directory of Open Access Journals