Temat: optimal frequency - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Time and electric energy losses minimization in speed control of induction motors
Autorzy:: Kawecki, L.
Niewierowicz, T.
Powiązania:: https://bibliotekanauki.pl/articles/205536.pdf
Data publikacji:: 1999
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: optymalizacja
sterowanie optymalne
zasada maksimum
electric energy losses minimization
electromagnetic transients
induction motors
machine control
optimal control
optimal frequency starting
speed control
Opis:: The paper presents a method for solving the problem of the simultaneous time and electric energy losses minimization during the frequency speed control of induction motors with the electromagnetic transients. To solve this vector optimization problem, the optimization index in the form of linear combination of the scalar indexes is assumed and the Pontryagin maximum principle is used. Examples of solution for two cases of optimal frequency starting of two induction motors are presented.
Źródło:: Control and Cybernetics; 1999, 28, 2; 331-353
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Improved linear complexities of the frequency hopping sequences in two optimal sets
Autorzy:: Gao, J.
Li, X.
Wei, Y.
Powiązania:: https://bibliotekanauki.pl/articles/206234.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Instytut Badań Systemowych PAN
Tematy:: frequency hopping sequence
linear complexity
permutation polynominal
optimal set
Opis:: For the anti-jamming purpose, high linear complexity is desired for each frequency hopping sequence in an optimal set. Using a proper power permutation, Wang has shown that an optimal set of frequency hopping sequences with small linear complexity can be transformed into a new optimal set of frequency hopping sequences with large linear complexity. This paper conains two results. First, we extend the result of Wang. A power permutation is only suitable for a special construction of optimal set of frequency hopping sequences, see Wang (2011). However, the power permutation chosen in this paper applies to the general construction of optimal set of frequency hopping sequences. Second, by using a binomial permutation polynomial P(x), which is different from those permutations used before, we obtain a novel optimal set of frequency hopping sequences with high linear complexity from an optimal set of frequency hopping sequences with small linear complexity. By counting the number of different roots in the sequence representation, we determine the linear complexities of the frequency hopping sequences in two optimal sets transformed by the power permutation or binomial permutation.
Źródło:: Control and Cybernetics; 2012, 41, 2; 317-334
0324-8569
Pojawia się w:: Control and Cybernetics
Dostawca treści:: Biblioteka Nauki

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