System identification method inheriting steady-state characteristics of existing model

Sho Yoshimura, Ayaka Matsubayashi, Masaki Inoue

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)


In this paper, we propose an identification method to construct a state-space model that inherits steady-state characteristics from an existing model. It is assumed that in prior to an identification experiment, a designer has a model which accurately expresses steady-state characteristics of an actual system responding to certain inputs. The characteristics are extracted and inherited to a reconstructed state-space model via the combination with a subspace identification method. By applying a change-of-variable technique, the combined identification problem, which is formulated as nonlinear optimisation, is reduced to a least squares problem. Finally, we show the effectiveness of the proposed method in three different numerical simulations.

Original languageEnglish
Pages (from-to)2701-2711
Number of pages11
JournalInternational Journal of Control
Issue number11
Publication statusPublished - 2019


  • System identification
  • model inheritance
  • subspace method

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Computer Science Applications


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