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Wyszukujesz frazę "state machines" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Experimental Comparison of Synthesis Tools Altera Quartus II and Synthagate
Autorzy:
Węgrzyn, M.
Karatkevich, A.
Powiązania:
https://bibliotekanauki.pl/articles/226665.pdf
Data publikacji:
2013
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
logic design
state machines
logic devices
FPGA
VHDL
Opis:
The paper presents comparison between efficiency of an industrial FPGA design software tool Altera Quartus II and similar design software tool Synthagate by Syntezza company of an academic origin. The experiments were performed using a series of examples describing the Mealy finite state machines; onehot state encoding was used in all cases. Area (number of used logical blocks) was the main parameter used for the comparison. Influence of the way of FSM description (in VHDL language) on the quality of synthesis was studied. The obtained results show that Synthagate in almost all cases performs synthesis more efficiently and essentially quicker than Altera Quartus. Section I presents motivation of the research. Section II reminds the notion of FSM. Section III describes problems which had to be solved to provide correctness of experimental comparison. Section IV presents some details about state encoding way used in the experiments. In Section V, the experimental results are presented. Section VI describes the problems related to the comparison which still have to be solved. Section VII presents the conclusions from the experiments. Section VIII suggests possible reasons of the detected situation.
Źródło:
International Journal of Electronics and Telecommunications; 2013, 59, 4; 357-362
2300-1933
Pojawia się w:
International Journal of Electronics and Telecommunications
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Steady-state time-periodic finite element analysis of a brushless DC motor drive considering motion
Autorzy:
Jagieła, M.
Gwóźdź, J.
Powiązania:
https://bibliotekanauki.pl/articles/141576.pdf
Data publikacji:
2015
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
finite elements
brushless machines
inverter drives
steady-state
mathematical modeling
Opis:
This paper aims at providing a framework for comprehensive steady-state time-domain analysis of rotating machines considering motion. The steady-state waveforms of electromagnetic and circuit quantities are computed via iterative solution of the nonlinear field-circuit-and-motion problem with constraints of time periodicity. The cases with forced speed and forced load torque are considered. A comparison of execution times with a conventional time-stepping transient model is carried out for two different machines. The numerical stability of a time-periodic model with forced speed is shown to be worse than that of traditional transient time-stepping one, although the model converges within a reasonable number of iterations. This is not the case if forced load via equation of mechanical balance is accounted for. To ensure convergence of the iterative process the physical equation of motion is replaced by the fixed-point equation. In this way the model delivers time-periodic solutions regarding not only the electromagnetic quantities but also the rotational speed.
Źródło:
Archives of Electrical Engineering; 2015, 64, 3; 471-486
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Modeling and simulation aspects of AC machines
Autorzy:
Popp, M.
Laza, P.
Mathis, W.
Powiązania:
https://bibliotekanauki.pl/articles/141659.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
State Space Modeling
AC Machines
ODE and DAE Solvers
MATLAB
Opis:
In the field of power and drive systems, electrical AC machines are mostly modeled using a set of explicit ordinary differential equations in a state space representation. It is shown, that by using other equation types for simulation, algebraic constraints arising from aggregating several machines to a more complex system can directly be considered. The effects of different model variants on numerical ODE/DAE solvers are investigated in the focus of this work in order perform efficient simulations of larger systems possessing electrical AC machines.
Źródło:
Archives of Electrical Engineering; 2016, 65, 2; 315-326
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Algorithm for determining two-periodic steady-states in AC machines directly in time domain
Autorzy:
Sobczyk, T.J.
Powiązania:
https://bibliotekanauki.pl/articles/141171.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
AC machines
steady state analysis
two-periodic solutions
analysis in time domain
discrete differential operator
iterative algorithms
Opis:
This paper describes an algorithm for finding steady states in AC machines for the cases of their two-periodic nature. The algorithm enables to specify the steady-state solution identified directly in time domain despite of the fact that two-periodic waveforms are not repeated in any finite time interval. The basis for such an algorithm is a discrete differential operator that specifies the temporary values of the derivative of the twoperiodic function in the selected set of points on the basis of the values of that function in the same set of points. It allows to develop algebraic equations defining the steady state solution reached in a chosen point set for the nonlinear differential equations describing the AC machines when electrical and mechanical equations should be solved together. That set of those values allows determining the steady state solution at any time instant up to infinity. The algorithm described in this paper is competitive with respect to the one known in literature an approach based on the harmonic balance method operated in frequency domain.
Źródło:
Archives of Electrical Engineering; 2016, 65, 3; 575-583
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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