A nonlinear state-space approach to hysteresis identification

Jean-Philippe Noel, Alireza Fakhrizadeh Esfahani, Gaetan Kerschen, Joannes Schoukens

Research output: Contribution to journalArticlepeer-review

57 Citations (Scopus)


Most studies tackling hysteresis identification in the technical literature follow white-box approaches, i.e. they rely on the assumption that measured data obey a specific hysteretic model. Such an assumption may be a hard requirement to handle in real applications, since hysteresis is a highly individualistic nonlinear behaviour. The present paper adopts a black-box approach based on nonlinear state-space models to identify hysteresis dynamics. This approach is shown to provide a general framework to hysteresis identification, featuring flexibility and parsimony of representation. Nonlinear model terms are constructed as a multivariate polynomial in the state variables, and parameter estimation is performed by minimising weighted least-squares cost functions. Technical issues, including the selection of the model order and the polynomial degree, are discussed, and model validation is achieved in both broadband and sine conditions. The study is carried out numerically by exploiting synthetic data generated via the Bouc–Wen equations.
Original languageEnglish
Pages (from-to)171-184
Number of pages14
JournalMechanical Systems and Signal Processing
Issue numberPart B
Publication statusPublished - 1 Feb 2017


  • Black-box method
  • Dynamic nonlinearity
  • Hysteresis
  • Nonlinear system identification
  • State-space models


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