Results 271 to 280 of about 425,748 (301)

Analysis and Suppression of Zero Sequence Circulating Current in Open Winding PMSM Drives With Common DC Bus [PDF]

IEEE Transactions on Industry Applications, 2017
In this paper, the zero sequence circulating current in open winding permanent magnet synchronous machine (OW-PMSM) drives with common dc bus is systematically analyzed for the first time.
Hanlin Zhan, Z Q Zhu, Milijana Odavic
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New Sequences with Zero Autocorrelation

Problems of Information Transmission, 2002
The authors give a new construction method for unimodular delta-correlated sequences of length \(p\) (a prime). This method uses so-called Gauss periods. In the case \(p=3f+1\) it is shown that the elements are defined by roots of a polynomial of degree 12 over \(\mathbb{Z}\) (the integers) for one family and by roots of a polynomial of degree 6 for ...
Ernst M. Gabidulin, Vitaly V. Shorin
openaire   +1 more source

Multiplication of sequences with zero autocorrelation [PDF]

Australas. J Comb., 1994
This paper may be regarded as a continuation of the paper by the authors [On sequences with zero autocorrelation, Des. Codes Cryptography 4, No. 4, 327-340 (1994; Zbl 0808.05021)]. Main results of the present paper may be stated as follows: A set of near normal sequences of length \(n= 4m+ 1\) is defined as a quadruple of \((- 1,0,1)\)-sequences of ...
Koukouvinos, Christos, Kounias, Stratis, Seberry, Jennifer, Yang, C. H., Yang, Joel   +4 more
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Zeros of polynomials embedded in an orthogonal sequence

Numerical Algorithms, 2010
Let $\{x_{k,n}\}_{k=1}^n$ and $\{x_{k,n+1}\}_{k=1}^{n+1}$ , n????, be two given sets of real distinct points with x 1,n?+?1? ?0, which are chosen arbitrarily, that define p n?+?2 via the three term recurrence relation $$ p_{n+2}(x)=(x-b_{n+1})p_{n+1}(x)-\lambda_{n+1}p_n(x). $$
Alan F. Beardon, Kathy Driver, Kerstin Jordaan   +2 more
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On integer-valued zero autocorrelation sequences

2013 Asia-Pacific Signal and Information Processing Association Annual Summit and Conference, 2013
A systematic way to construct Integer-valued zero autocorrelation sequences is proposed. This method only uses fundamental theorems of discrete Fourier transform(DFT) and some number theories.
Soo-Chang Pei, Kuo-Wei Chang
openaire   +1 more source

Generalized zero-sequence and anti-zero-sequence performance of induction machines

Archiv für Elektrotechnik, 1981
The present paper derives a new general zero-sequence steady state ladder equivalent circuit of threephase induction machines where zero-sequence currents can simultaneously flow in both the stator and rotor windings. A general expression for the zero-sequence torque is also derived.
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Search for sequences with zero autocorrelation

1988
It exists sequences of length N of constant amplitude and zero autocorrelation over 2n symbols, provided that each sequence be preceeded by n symbols and followed by n other symbols. Methods for obtaining these N + 2n symbols are proposed and examples are given.
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On cross numbers of minimal zero sequences [PDF]

Australas. J Comb., 1996
Let \(G\) be an (additively written) finite abelian group. Let us say that \(S=\{g_1,\dots,g_t\}\) is a minimal zero sequence if \(\sum_{1\leq i\leq t}g_i=0\) and there is not a proper subset \(I\subset \{1,2,\dots,t\}\) for which \(\sum_{i\in I}g_i=0\). The cross number \(k(S)\) is defined by \(k(S)=\sum^t_{i=1} [\text{ord } g_i]^{-1}\).
Scott T. Chapman, Alfred Geroldinger
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The convergence to zero of Gaussian sequences

Mathematical Notes of the Academy of Sciences of the USSR, 1977
Conditions for Gaussian sequences to converge to zero with unit probability are examined. A comparison theorem is proved, on the basis of which sufficient conditions are derived for the convergence to zero of Gaussian sequences, including, in particular, the previously known ones.
Buldygin, V. V., Douchenko, V. S.
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Overconvergence and Zeros of sequences of rational functions

Approximation Theory and its Applications, 1993
Summary: We consider sequences of rational functions with a bounded number of free poles converging uniformly with a maximum geometric rate to a holomorphic function on a regular set, and we examine the limiting distribution of the zeros and its relations with the phenomenon of overconvergence. Our results further extend the well known classical theory
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