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Data-driven modelling (identification) of non-stationary systems

Technical illustration of a wind turbine operational domain with a marked "RPM range" leading to a 3D frequency response chart, alongside the statements "Response characteristics change with the rotational speed" and "Global dynamic behaviour is: Non-Stationary, and Parameter-Dependent".

We develop robust methods to capture time-dependent and nonlinear dynamics, including quantification of uncertainties derived from experimental and operational conditions.

We specialize on Bayesian statistical time-series methods, which can, in an implicit or explicit manner, integrate the effects of environmental and operational variables on the dynamic properties of structures.

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We specialize in the development of system identification methods based on non-parametric and parametric Bayesian time-series models for different types of non-stationary behaviour, including:

  • Fast, continuously varying non-stationary dynamics (rotor dynamics, robotic manipulators, wind turbines)
  • Slow, continuously varying non-stationary dynamics (mid and long-term changes in bridges, maritime structures, wind energy facilities)
  • Switching non-stationary dynamics featured in systems with changing operational regimes, including damaged conditions
  • Estimation and tracking methods for slowly varying systems

     

SDU Mechanical Engineering University of Southern Denmark

  • Campusvej 55
  • Odense M - DK-5230
  • Phone: +45 6550 7450

Last Updated 19.09.2026