Autor: Bernat, S. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Effect of minimum energy control on steel loss in VR stepper motor
Autorzy:: Bernat, J.
Kołota, J.
Stępień, S.
Powiązania:: https://bibliotekanauki.pl/articles/141426.pdf
Data publikacji:: 2013
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: energy consumption
lamination
finite element method
optimal control
Opis:: This research presents a 3D FE method for the simulation of the variable reluctance stepper motor dynamics. The proposed model is used to obtain the optimal minimum energy control law that minimizes the energy injected by the controller. The method is based on the strong coupling of field - circuit equations and extended to eddy current, motion and nonlinearity problem. The linearization technique for the coupled problem is presented. Also the lamination of the motor core is considered. In the paper the open - loop control problem is analyzed. The proposed model is validated by the comparison with measurements. Next, to demonstrate the effectiveness of the proposed optimal minimum energy control method is applied. In both cases, the examination of the variable reluctance stepper motor dynamics and the steel loss in the core is presented and compared.
Źródło:: Archives of Electrical Engineering; 2013, 62, 3; 439-447
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Multi-layer observer as new structure for state estimation in linear systems
Autorzy:: Bernat, J.
Kołota, J.
Superczyńska, P.
Stępień, S.
Powiązania:: https://bibliotekanauki.pl/articles/140374.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Luenberger observer
Multi Observer
electric DC motor
Opis:: A new structure to design observers for linear systems is presented in this work. The key step is the construction of two layers where the first consists of multiple observers and the second connects them providing the weighted estimation state. The main difficulty is to find a new feedback which is responsible for control weights. To define observation law, we rely on multi observers from the first layer. The proposed structure significantly improves the transient characteristics of the observation process, which is shown in illustrative examples.
Źródło:: Archives of Electrical Engineering; 2017, 66, 3; 507-521
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: An inductance lookup table application for analysis of reluctance stepper motor model
Autorzy:: Bernat, J.
Kołota, J.
Stępień, S.
Szymański, G.
Powiązania:: https://bibliotekanauki.pl/articles/141315.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: silnik krokowy
metoda elementów skończonych
tablica przeglądowa
stepper motor
finite element method
control
inductance lookup table
Opis:: This research presents a method of modeling and numerical simulation of a reluctance stepper motor using reduced finite-element time-stepping technique. In presented model, the circuit equations are reduced to non-stationary differential equations, i.e. the inductance mapping technique is used to find relationship between coil inductance and rotor position. A strongly coupled field-circuit model of the stepper motor is presented. In analyzed model the magnetostatic field partial differential equations are coupled with rotor motion equation and solved simultaneously in each iterative step. The nonlinearity problem is solved using Newton-Raphson method with spline approximation of the B-H curve.
Źródło:: Archives of Electrical Engineering; 2011, 60, 1; 15-21
1427-4221
2300-2506
Pojawia się w:: Archives of Electrical Engineering
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 4.

Tytuł:: Suboptimal control of nonlinear continuous-time locally positive systems using input-state linearization and SDRE approach
Autorzy:: Bernat, J.
Kołota, J.
Stępień, S.
Superczyńska, P.
Powiązania:: https://bibliotekanauki.pl/articles/200111.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: positive nonlinear systems
feedback control
Riccati equation
sprzężenie zwrotne
układy nieliniowe
równanie Riccatiego
Opis:: The infinite time suboptimal control problem for continuous-time nonlinear positive systems is formulated and solved. A solution to the problem using input-state linearization and state-dependent Riccati equation method (SDRE) is established, a procedure for solving the problem is proposed and illustrated with a numerical example.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 1; 17-21
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

Artykuł

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