In this paper, we propose an identification procedure for nonlinear feedback systems by introducing a new type of model structure. The idea is to combine the advantages of two different model structures: the Polynomial NonLinear State Space (PNLSS) model and the block-structured feedback model. By imposing structural information to the existing PNLSS model, we obtain a flexible model with a lower number of parameters compared with the unconstrained structure. The structured-PNLSS model consists of a linear block in the feedforward path and a PNLSS block in the feedback path. The presented identification procedure for the structured-PNLSS model is applied to input/output measurements of a nonlinear device.
|15th IFAC Symposium on System Identification (SYSID 2009), July 6-8, 2009, St. Malo, France
|Published - 6 jul 2009
|Unknown - Stockholm, Sweden
Duur: 21 sep 2009 → 25 sep 2009
|21/09/09 → 25/09/09