Truncation of fractional derivative for online system identification
Langue
EN
Article de revue
Ce document a été publié dans
IFAC-PapersOnLine. 2022-01-01, vol. 55, n° 34, p. 60-65
Résumé en anglais
Fractional derivatives are non local operators that has compacity property in terms of parameter number for modeling diffusive phenomenon with very few parameters. One of its main properties is its non-local behavior, as ...Lire la suite >
Fractional derivatives are non local operators that has compacity property in terms of parameter number for modeling diffusive phenomenon with very few parameters. One of its main properties is its non-local behavior, as it can be exploited to model long-memory phenomena such as heat transfers. However, such non-locality implies a constant knowledge of the full past of the function to be differentiated. In the context of real-time system identification, this may limit the experiences as calculations become slower as time progresses. This study deals with the relationship between frequency content of a signal and its truncation error in order to obtain real-time exploitable algorithms.< Réduire
Mots clés
Fractional derivative
Short memory principle
LMRPEM
System identification
Unités de recherche