Reference : Grey-box nonlinear state-space modelling for mechanical vibrations identification
Scientific congresses and symposiums : Paper published in a journal
Engineering, computing & technology : Aerospace & aeronautics engineering
http://hdl.handle.net/2268/196440
Grey-box nonlinear state-space modelling for mechanical vibrations identification
English
Noël, Jean-Philippe mailto [Université de Liège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux >]
Schoukens, Johan [Vrije Universiteit Brussel - VUB > > > >]
Kerschen, Gaëtan [Université de Liège > Département d'aérospatiale et mécanique > Laboratoire de structures et systèmes spatiaux >]
Oct-2015
IFAC-PapersOnLine
Elsevier
48
28
817-822
Yes (verified by ORBi)
No
International
2405-8963
17th IFAC Symposium on System Identification
19 October - 21 October 2015
Beijing
China
[en] Nonlinear system identification ; mechanical systems ; state-space modelling ; nonlinear subspace initialisation ; maximum likelihood optimisation ; Silverbox benchmark
[en] In the present paper, a flexible and parsimonious model of the vibrations of nonlinear mechanical systems is introduced in the form of state-space equations. It is shown that the nonlinear model terms can be formed using a limited number of output measurements. A two-step identification procedure is derived for this grey-box model, integrating nonlinear subspace initialisation and maximum likelihood optimisation. The complete procedure is demonstrated on the Silverbox benchmark, which is an electrical mimicry of a single-degree-of-freedom mechanical system with one displacement-dependent nonlinearity.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Union Européenne = European Union - UE = EU
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/196440
10.1016/j.ifacol.2015.12.230

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