Temat: time-variant linear systems - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: On positive reachability of time-variant linear systems on time scales
Autorzy:: Bartosiewicz, Z.
Powiązania:: https://bibliotekanauki.pl/articles/200129.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: positive system
positive reachability
time scale
time-variant linear systems
Gram matrix
Opis:: Positive reachability of time-variant linear positive systems on arbitrary time scales is studied. It is shown that the system is positively reachable if and only if a modified Gram matrix corresponding to the system is monomial. The general criterion is then specified for particular cases of continuous-time systems and various classes of discrete-time systems. It is shown that in the case of continuous-time systems with analytic coefficients the conditions for positive reachability are very restrictive, similarly as for time-invariant systems.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2013, 61, 4; 905-910
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Reachability and controllability of time-variant discrete-time positive linear systems
Autorzy:: Rumchev, V. G.
Adeane, J.
Powiązania:: https://bibliotekanauki.pl/articles/970413.pdf
Data publikacji:: 2004
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: dodatni układ liniowy
układ z czasem dyskretnym
osiągalność i sterowalność
macierz nieujemna
positive linear systems
discrete-time systems
time-variant systems
reachability and controllability
non-negative matrices
Opis:: In this paper necessary and sufficient conditions (and criteria) for null-controllability, reachability and controllability of time-variant discrete-time positive linear systems are established. These properties appear to be entirely structural properties, that is, they do depend on the zero-nonzero pattern of the pair (A(k), B[k)) > 0 and do not depend on the values of its entries. An interesting phenomenon has been revealed namely the time needed to reach the origin for a null-controllable system as well as the time to reach a (non-negative) state from the origin for a reachable system can be less, equal or greater than the dimension of the system. This phenomenon has no equivalent in the case of time-invariant discrete-time positive linear systems where this time is always less or equal to the system dimension. Examples are provided.
Źródło:: Control and Cybernetics; 2004, 33, 1; 85-94
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Time-variant Darlington synthesis and induced realizations
Autorzy:: Pik, D.
Powiązania:: https://bibliotekanauki.pl/articles/908129.pdf
Data publikacji:: 2001
Wydawca:: Uniwersytet Zielonogórski. Oficyna Wydawnicza
Tematy:: system liniowy
synteza Darlingtona
contractive linear systems
Darlington synthesis
time-variant linear systems
Opis:: For a block lower triangular contraction T, necessary and sufficient conditions are given in order that there exist block lower triangular contractions T1,1, T2,1 and T2,2 such that Ut= [ T1,1 T ] T2,1 T2,2 is unitary. For the case when T1,1* and T2,2 have dense ranges, all such embeddings are described. Each unitary embedding of UT induces a contractive realization of T, and various properties of this realization are characterized in terms of the unitary embedding.
Źródło:: International Journal of Applied Mathematics and Computer Science; 2001, 11, 6; 1331-1360
1641-876X
2083-8492
Pojawia się w:: International Journal of Applied Mathematics and Computer Science
Dostawca treści:: Biblioteka Nauki

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