Circle criterion and boundary control systems in factor form: input-output approach

• Autorzy: Piotr Grabowski , Frank M. Callier
• Języki publikacji: EN

Abstrakty

EN

A circle criterion is obtained for a SISO Lur’e feedback control system consist- ing of a nonlinear static sector-type controller and a linear boundary control system in factor form on an infinite-dimensional Hilbert state space H previ- ously introduced by the authors (Grabowski and Callier, 1999). It is assumed for the latter that (a) the observation functional is infinite-time admissible, (b) the factor control vector satisfies a compatibility condition, and (c) the trans- fer function belongs to H∞ (Π+ ) and satisfies a frequency-domain inequality of the circle criterion type. We also require that the closed-loop system be well- posed, i.e. for any initial state x0 ∈ H the truncated input and output sig- nals uT , yT belong to L2 (0, T ) for any T > 0. The technique of the proof adapts Desoer-Vidyasagar’s circle criterion method (Desoer and Vidyasagar, 1975, Ch. 3, Secs. 1 and 2, pp. 37–43, Ch. 5, Sec. 2, pp. 139–142 and Ch. 6, Secs. 3 and 4, pp. 172–174), and uses the input-output map developed by the authors (Grabowski and Callier, 2001). The results are illustrated by two trans- mission line examples: (a) that of the loaded distortionless RLCG type, and (b) that of the unloaded RC type. The conclusion contains a discussion on improving the results by the loop-transformation technique.

Słowa kluczowe

EN

input-output relations; infinite-dimensional control systems; semigroups

• Wydawca: University of Zielona Gora Press
• Czasopismo: International Journal of Applied Mathematics and Computer Science
• Rocznik: 2001
• Tom: 11
• Numer: 6
• Strony: 1387-1403

Daty

wydano

2001

Twórcy

autor

Piotr Grabowski

• Institute of Automatics, Academy of Mining and Metallurgy, al. Mickiewicza 30/B1, 30-059 Kraków, Poland

autor

Frank M. Callier

• University of Namur (FUNDP), Department of Mathematics, Rempart de la Vierge 8, B-5000 Namur, Belgium

Bibliografia

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