A parsimonious identification approach in the frequency-domain for experimental fractional systems of unknown order
Résumé
When the order of experimental fractional systems is unknown, frequency domain identification is typically based
on linear least-squares (L2) methods, which often prove unsatisfactory. The main reason is that the solutions they provide are
dense, often leading to a continuous of identified fractional differential orders, which obfuscate the very basic phenomena one
wishes to highlight. In order to overcome such difficulty, the present work proposes the use of a L1 based nonlinear
identification approach, which naturally leads to parsimonious identified results. This method is successfully illustrated on a
system transfer function with both integer and fractional differential terms.
Domaines
Vibrations [physics.class-ph]Origine | Fichiers produits par l'(les) auteur(s) |
---|