Expert schemes for the obtaining of discrete models for LTI systems using real sampling and parameter identification

• Autorzy: De La Sen M. , Garrido A.J. , Barambones O. , Maseda F.J.
• Języki publikacji: EN

Abstrakty

EN

In this paper, we present an expert network scheme designed to obtain discrete transfer functions for LTI systems under real sampling of finite duration rather than an instantaneous ideal one. For this purpose, the expert network handles two different identification methods to derive parametric discrete models techniques of reduced mathematical complexity from measured input-output data series. One of the methods is based on a typically used least-squares minimization, while the other one is based on the Leverrier's algorithm; that is, using a data series of the impulse response of the system to identify a parametric discrete model. These techniques are of particular practical interest when the continuous-time system is unknown or when dealing with discrete-time systems whose analytical expression becomes very complex due, for instance, to the use of finite duration real sampling. The expert network improves the discretization process implementing a biestimation mechanism that switches to the model that provides a better performance at each estimation instant considered for different values of the hold order.

Słowa kluczowe

EN

identification (control systems); algorithms; discrete time control systems; electronic equipment; knowledge based systems; sampling; approximation theory; least squares approximations

• Wydawca: Oficyna Wydawnicza Politechniki Wrocławskiej
• Czasopismo: Systems Science
• Rocznik: 2003
• Tom: Vol. 29, nr 2
• Strony: 95--112
• Opis fizyczny: Bibliogr. 32 poz.

Twórcy

autor

De La Sen M.

• Instituto Investigation Desarrollo de Procesos, (IIDP). Dpto. de Ingenieria de Sistemas Automatica, Fac. Ciencias de Leioa, 48080. Leioa, Spain
• Dpto. de Ingenieria de Sistemas y Automatica. EUITI de Bilbao, Pza. de la Casilla, 348012. Bilbao, Pza. de la Casilla, 3 4812. Bilbao, Universidad del Pais Vasco/University of the Basque Country.

autor

Garrido A.J.

• Instituto Investigation Desarrollo de Procesos, (IIDP). Dpto. de Ingenieria de Sistemas Automatica, Fac. Ciencias de Leioa, 48080. Leioa, Spain
• Dpto. de Ingenieria de Sistemas y Automatica. EUITI de Bilbao, Pza. de la Casilla, 348012. Bilbao, Pza. de la Casilla, 3 4812. Bilbao, Universidad del Pais Vasco/University of the Basque Country.

autor

Barambones O.

• Dpto. de Ingenieria de Sistemas y Automatica. EUITI de Bilbao, Pza. de la Casilla, 348012. Bilbao, Pza. de la Casilla, 3 4812. Bilbao, Universidad del Pais Vasco/University of the Basque Country.

autor

Maseda F.J.

• Dpto. de Ingenieria de Sistemas y Automatica. EUITI de Bilbao, Pza. de la Casilla, 348012. Bilbao, Pza. de la Casilla, 3 4812. Bilbao, Universidad del Pais Vasco/University of the Basque Country.

Bibliografia

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