Analysis of difficulty in estimating physically-meaningful model parameters based on normalized parameter sensitivity plot

Ichiro Maruta, Atsushi Baba, Shuichi Adachi

研究成果: Conference contribution

抄録

In this paper, a new approach for analyzing the degree of the difficulty in estimating parameters is proposed. The approach targets at linear continuous-time models with physically-meaningful parameters and is based on the newly introduced normalized parameter sensitivity plot. The plot illustrates how the identification inputs contribute to the estimation accuracy in frequency domain and visualize the relative relationship between the model sensitivities for the parameters. In the paper, it is proven that there is a practically important accuracy limitation derived from the relative relationship. And the proposed plot enables to evaluate the limitation in a visual way. To show the applicability of the theoretical discussion in practical situations, a numerical experiment based on a mechanical system model is presented. And, a model of a rechargeable battery for electric vehicles is analyzed by the proposed approach to illustrate the effectiveness of the approach in devising strategies for estimating model parameters and selecting model structures.

本文言語English
ホスト出版物のタイトル54rd IEEE Conference on Decision and Control,CDC 2015
出版社Institute of Electrical and Electronics Engineers Inc.
ページ6686-6691
ページ数6
ISBN(電子版)9781479978861
DOI
出版ステータスPublished - 2015 2月 8
イベント54th IEEE Conference on Decision and Control, CDC 2015 - Osaka, Japan
継続期間: 2015 12月 152015 12月 18

出版物シリーズ

名前Proceedings of the IEEE Conference on Decision and Control
54rd IEEE Conference on Decision and Control,CDC 2015
ISSN(印刷版)0743-1546
ISSN(電子版)2576-2370

Other

Other54th IEEE Conference on Decision and Control, CDC 2015
国/地域Japan
CityOsaka
Period15/12/1515/12/18

ASJC Scopus subject areas

  • 制御およびシステム工学
  • モデリングとシミュレーション
  • 制御と最適化

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