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Wyszukujesz frazę "internal control" wg kryterium: Temat


Wyświetlanie 1-4 z 4
Tytuł:
Predictive current control for permanent magnet synchronous motor based on internal model control observer
Autorzy:
Tang, Min'at
Wang, Chenyu
Luo, Yinhang
Powiązania:
https://bibliotekanauki.pl/articles/2086720.pdf
Data publikacji:
2022
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
internal model control observer
MPC
PMSM
predictive current control
Opis:
The model predictive current control (MPCC) of the permanent magnet synchronous motor (PMSM) is highly dependent on motor parameters, and a parameter mismatch will cause the system performance degradation. Therefore, a strategy based on an internal model control (IMC) observer is proposed to correct the mismatch parameters. Firstly, based on the MPCC strategy of the PMSM, according to the dynamic model of the PMSM in a rotating orthogonal coordinate system, -axis and -axis current IMC observers are designed, and the stability derivation is carried out. It is proved that the observer can estimate -axis and -axis disturbance components caused by a parameter mismatch without static error. Then, the estimated disturbance component is compensated for by the reference voltage prediction expression. Finally, the effectiveness of the proposed strategy is verified in two different conditions. The experimental results show that the proposed control strategy can effectively compensate for the parameter mismatch disturbance in MPCC for PMSM, improve the dynamic and static performance of the system, and improve the robustness of the system. voltage prediction expression. Finally, the effectiveness of the proposed strategy is verified in two different conditions. The experimental results show that the proposed control strategy can effectively compensate for the parameter mismatch disturbance in MPCC for PMSM, improve the dynamic and static performance of the system, and improve the robustness of the system.
Źródło:
Archives of Electrical Engineering; 2022, 71, 2; 343--362
1427-4221
2300-2506
Pojawia się w:
Archives of Electrical Engineering
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Internal Model Control for a Light-Weight Active Noise-Reducing Casing
Autorzy:
Mazur, K.
Pawełczyk, M.
Powiązania:
https://bibliotekanauki.pl/articles/177886.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
active noise-vibration control
active structural acoustic control
active casing
Internal Model Control
Opis:
The active noise-reducing casing developed and promoted by the authors in recent publications have multiple advantages over other active noise control methods. When compared to classical solutions, it allows for obtaining global reduction of noise generated by a device enclosed in the casing. Moreover, the system does not require loudspeakers, and much smaller actuators attached to the casing walls are used instead. In turn, when compared to passive casings, the walls can be made thinner, lighter and with much better thermal transfer than sound-absorbing materials. For active noise control a feedforward structure is usually used. However, it requires an in-advance reference signal, which can be difficult to be acquired for some applications. Fortunately, usually the dominant noise components are due to rotational operations of the enclosed device parts, and thus they are tonal and multitonal. Therefore, it can be adequately predicted and the Internal Model Control structure can be used to benefit from algorithms well developed for feedforward systems. The authors have already tested that approach for a rigid casing, where interaction of the walls was significantly reduced. In this paper the idea is further explored and applied for a light-weight casing, more frequently met in practice, where each vibrating wall of the casing influences all the other walls. The system is verified in laboratory experiments.
Źródło:
Archives of Acoustics; 2016, 41, 2; 315-322
0137-5075
Pojawia się w:
Archives of Acoustics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Internal control standards and software support for risk management in public administration
Wsparcie zarządzania bezpieczeństwem informacji i zarządzania ryzykiem w administracji publicznej
Autorzy:
Bagiński, J.
Powiązania:
https://bibliotekanauki.pl/articles/375817.pdf
Data publikacji:
2014
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
risk management
risk analysis
software support
internal control standards
information security
business continuity
zarządzanie ryzykiem
analiza ryzyka
wsparcie oprogramowania
standardy kontroli wewnętrznej
bezpieczeństwo informacji
ciągłość działania
Opis:
The chapter deals with the issue of the risk and security management process in public administration, according to the internal audit standards and their requirements. Main legal acts and standards were specified and shortly described. Specially the risk analysis process and security measures selection were emphasized. The possibility to use the software tools for the risk analysis and security measures selection support in public administration was presented. The experiment of OSCAD usage in public administration was shortly described and its results were presented. This experiment shows that the software primarily intended for IT Security Management can be used for risk management in different area as well, for example – in public administration. Some possibilities of further development of risk management supporting tools were proposed
Rozdział dotyczy problemów procesu zarządzania ryzykiem i zarządzania bezpieczeństwem w administracji publicznej i jednostkach sektora finansów publicznych, w odniesieniu do standardów kontroli zarządczej i ich wymagań. W artykule wymieniono i krótko opisano główne akty prawne i standardy związane z tymi tematami. Szczególnie wyróżniono proces analizy ryzyka i doboru zabezpieczeń. Przedstawiono możliwość wykorzystania narzędzi komputerowych do wsparcia procesu zarządzania ryzykiem i doboru zabezpieczeń w jednostkach administracji publicznej. Krótko opisano próbę wykorzystania do tego celu oprogramowania OSCAD. Eksperyment ten wykazał możliwość wykorzystania w obszarze administracji publicznej narzędzia, dedykowanego pierwotnie do wsparcia procesu zarządzania bezpieczeństwem informacji i ciągłością działania. Na koniec przedstawiono możliwości dalszego rozwoju narzędzi wspierających proces zarządzania ryzykiem.
Źródło:
Theoretical and Applied Informatics; 2014, 26, 3-4; 119-135
1896-5334
Pojawia się w:
Theoretical and Applied Informatics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Decoupling control for permanent magnet in-wheel motor using internal model control based on back-propagation neural network inverse system
Autorzy:
Li, Y.
Zhang, B.
Xu, X.
Powiązania:
https://bibliotekanauki.pl/articles/200933.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
electric vehicle
permanent magnet in-wheel motor
back-propagation neural network
inverse system
internal model control
pojazd elektryczny
silnik z napędem na magnesy stałe
inwersja systemu
propagacja wsteczna
model odwrotny
system odwrotny
Opis:
The permanent magnet in-wheel motor (PMIWM) is a nonlinear, multivariable, strongly coupled and highly complex system. The key to the development and application of the PMIWM consists in the improvement of its control accuracy and dynamic performance. In order to effectively decouple the PMIWM, this paper presents a novel internal model control (IMC) approach based on the back-propagation neural network inverse (BPNNI) control method. First, theoretical analysis is conducted to show the existence of the PMIWM inverse system, to be modeled mathematically. The inverse system approximated and identified by the back-propagation neural network (BPNN) constitutes the back-propagation neural network inverse (BPNNI) system. Then, by cascading the BPNNI system on the left side of the original PMIWM system, a new decoupling, pseudo-linear system is established. Moreover, the 2-DOF internal model control (IMC) method is employed to design the extra closed-loop controller that further improves disturbance rejection and robustness of the whole system. Consequently, the proposed decoupling control approach incorporates the advantages of both the BPNNI and the IMC. Effectiveness of thus proposed control approach is verified by means of simulation and real-time hardware-in-the-loop (HIL) experiments.
Źródło:
Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 6; 961-972
0239-7528
Pojawia się w:
Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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