1983
DOI: 10.1080/00207178308932963
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Fixed modes and local feedbacks in interconnected systems †

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Cited by 6 publications
(4 citation statements)
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“…It is examined for an interconnected (global) system (A; B d ), consisting of two local scalar subsystems under the very general assumptions of the global and the local controllability. Only the case of two interconnected subsystems is examined, since only then will the global system have no decentralized fixed modes, when local feedbacks are applied [1], [2], [4]- [7], [9]. Without loss of generality [4], we assume that both input channels of system (A; B d ) are scalar and that the system matrix has no particular structure.…”
Section: Introductionmentioning
confidence: 99%
“…It is examined for an interconnected (global) system (A; B d ), consisting of two local scalar subsystems under the very general assumptions of the global and the local controllability. Only the case of two interconnected subsystems is examined, since only then will the global system have no decentralized fixed modes, when local feedbacks are applied [1], [2], [4]- [7], [9]. Without loss of generality [4], we assume that both input channels of system (A; B d ) are scalar and that the system matrix has no particular structure.…”
Section: Introductionmentioning
confidence: 99%
“…Σε διάφορες εργασίες αποδείχθηκε ότι, όταν ένα ολικό σύστημα δυο υποσυστημάτων είναι ολικά και τοπικά ελέγξιμο τότε δεν έχει α-σταθερούς πόλους και μπορεί να σταθεροποιηθεί με ΓΣΑΤΛΚ , (Fessas, 1985). Αν το ολικό σύστημα αποτελείται από τρία και πάνω υποσυστήματα τότε η ολική και τοπική ελεγξιμότητα δεν εγγυώνται την μη ύπαρξη α-σταθερών πόλων (Ikeda and Siljak, 1979 (Wang and Davison, 1973), (Corfmat and Morse, 1976), (Calogiannis and Fessas, 1983), (Kailath, 1980)).…”
Section: ευστάθεια πολυωνύμου R(s)p(s)+q(s)unclassified
“…κατασκευάστηκε από τον πίνακα si-Α διαγράφοντας τις η^-στή και τελευταία (η-στή) σειρές. Η χρησιμότητα του πίνακα αυτού φαίνεται από το παρακάτω λήμμα (Calogiannis and Fessas, 1983). Τότε έχουμε το παρακάτω λήμμα (Fessas, 1986), (Fessas, 1987).…”
Section: ο ενδοελέγξιμος πίνακας και ο πυρήνας τουunclassified
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