Autor: Li, Z.-x. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Design and analysis of interior composite-rotor bearingless permanent magnet synchronous motors with two layer permanent magnets
Autorzy:: Sun, X.
Su, B.
Chen, L.
Yang, Z.
Li, K.
Powiązania:: https://bibliotekanauki.pl/articles/200490.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: bearingless motor
permanent magnet motor
finite element analysis
cogging torque
static electromagnetic characteristics
silnik z magnesem trwałym
analiza elementów skończonych
moment skręcający
właściwości elektromagnetyczne
silnik bezłożyskowy
Opis:: In this paper, a new type of interior composite-rotor bearingless permanent magnet synchronous motors (BPMSMs) with two layer permanent magnets (PMs) is proposed. In order to reduce the torque ripple of this kind of motors, the sizes of PMs are optimized. Moreover, the magnetic field analysis of the interior composite-rotor BPMSM with two layer PMs is carried out by the finite element method (FEM). The corresponding static electronic magnetic characteristics at no load, including magnetic field, PM flux linkage and inductance, are studied in detail. In addition, electromagnetic torque characteristics and suspension force characteristics are also investigated thoroughly. The results of the analysis and simulation lay a significant foundation for further research on the interior composite-rotor BPMSMs with two layer PMs.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2017, 65, 6; 833-843
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Efficient learning variable impedance control for industrial robots
Autorzy:: Li, C.
Zhang, Z.
Xia, G.
Xie, X.
Zhu, Q.
Powiązania:: https://bibliotekanauki.pl/articles/200716.pdf
Data publikacji:: 2019
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: variable impedance control
reinforcement learning
efficient
Gaussian process
industrial robots
impedancja
poprawa efektywności
wydajność
model Gaussa
roboty przemysłowe
Opis:: Compared with the robots, humans can learn to perform various contact tasks in unstructured environments by modulating arm impedance characteristics. In this article, we consider endowing this compliant ability to the industrial robots to effectively learn to perform repetitive force-sensitive tasks. Current learning impedance control methods usually suffer from inefficiency. This paper establishes an efficient variable impedance control method. To improve the learning efficiency, we employ the probabilistic Gaussian process model as the transition dynamics of the system for internal simulation, permitting long-term inference and planning in a Bayesian manner. Then, the optimal impedance regulation strategy is searched using a model-based reinforcement learning algorithm. The effectiveness and efficiency of the proposed method are verified through force control tasks using a 6-DoFs Reinovo industrial manipulator.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2019, 67, 2; 201-212
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Digital control system design for bearingless permanent magnet synchronous motors
Autorzy:: Sun, X.
Shi, Z.
Yang, Z.
Wang, S.
Su, B.
Chen, L.
Li, K.
Powiązania:: https://bibliotekanauki.pl/articles/202311.pdf
Data publikacji:: 2018
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: BPMSMs
cyfrowy system kontroli
podwójnie zamknięty system regulacji prędkości
projektowanie oprogramowania
projekt sprzętu
digital control system
double-closed speed regulating system
software design
hardware design
Opis:: This study investigates a digital control system which is used in bearingless permanent magnet synchronous motors (BPMSMs). Compared with traditional permanent magnet synchronous motors, a BPMSM is characterized by higher speed and no mechanic friction. Therefore, the application value of the latter to the special area is higher than that of the former. An analysis from previous work on the BPMSM had proved its feasibility, and some performances such as suspension force, inductance and so on were also investigated. Based on this analysis, this study focuses on solving control problems in practical applications by designing a control system. The control system design includes overall schematic, hardware and software designs. Main software systems, including the force/current transform module and closed loop control module for radial displacement, are analyzed. Interface circuit for radial displacement, current feedback circuit and dead zone protection circuit are designed for the hardware system. Finally, several performance experiments have been conducted to verify the effectiveness of the designed digital control system. Experiment results indicate that the rotor has unique characteristics, such as stable suspension performance, good start-of-suspension performance, and rapid anti-disturbance features.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2018, 66, 5; 687-698
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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