Zobrazeno 1 - 10
of 252
pro vyhledávání: '"Guofu Zhai"'
Publikováno v:
Micromachines, Vol 15, Iss 3, p 368 (2024)
The magnetic properties of soft magnetic materials, including their saturation magnetic induction strength and permeability, significantly affect the dynamic characteristics of electromagnetic relays. However, the soft materials most commonly used fo
Externí odkaz:
https://doaj.org/article/e12e808199814ec7afedfde1545e751d
Publikováno v:
IEEE Access, Vol 11, Pp 140418-140427 (2023)
Probability of arc re-strike increases with the increment of break voltage, especially in an arc chamber of DC bridge-type contacts equipped with permanent magnets. Among all types of arc re-strikes, the most dangerous one is that part of the arc re-
Externí odkaz:
https://doaj.org/article/98fc04e9441a492597ba8acc20f7dfbe
Publikováno v:
IEEE Access, Vol 9, Pp 16019-16029 (2021)
Dictionary-based fault diagnosis methods, focusing on storing feature patterns of known faults, have been widely used for electromechanical systems. The state of component degradation caused soft faults, however, are continuously changeable. Thus, co
Externí odkaz:
https://doaj.org/article/b3c088a19e5e4d2fb3ea41a2dc2e53e6
Publikováno v:
IEEE Access, Vol 8, Pp 123813-123827 (2020)
As a powerful time-frequency signal analysis technique, empirical mode decomposition (EMD) has been commonly applied in fault diagnosis. However, the cubic spline-curve often causes outstanding over and undershoot problem, which significantly limits
Externí odkaz:
https://doaj.org/article/c80f250c396d4379940b291cbe654190
Publikováno v:
Energies, Vol 16, Iss 2, p 663 (2023)
A permanent magnet synchronous motor (PMSM) is a crucial device for power conversion in an energy system. The cogging torque of the PMSM is a crucial output characteristic, the robustness of which affects the operational reliability of the energy sys
Externí odkaz:
https://doaj.org/article/e49c6d95e14340639bfa186d64b5012e
Publikováno v:
IEEE Access, Vol 6, Pp 42566-42577 (2018)
The selection of tests required to make complex systems testable is a fundamental of system-level fault diagnosis. To evaluate the test selection, testability metric estimation (TME) is required. The influence of unreliable (imperfect) tests, whose o
Externí odkaz:
https://doaj.org/article/44cc01fe576b4ef4bf02192695d4d059
Publikováno v:
Remote Sensing, Vol 13, Iss 1, p 11 (2020)
In this study, a new moving amplification matching algorithm was proposed, and then the temporal and spatial differences and correlation were analysed and evaluated by comparing the FengYun-4A Lightning Mapping Imager (FY-4A LMI) data and the China M
Externí odkaz:
https://doaj.org/article/ac51bcc26d8141c098b594d6bc1be389
Publikováno v:
Complexity, Vol 2018 (2018)
Contactors are important components in circuits. To solve the multiobjective optimization problems (MOPs) of contactors, a niching multiobjective particle swarm optimization (NMOPSO) with the entropy weight ideal point theory is proposed in this pape
Externí odkaz:
https://doaj.org/article/0f9992bfc4eb4699844c713435cd81e3
Publikováno v:
Energies, Vol 12, Iss 22, p 4353 (2019)
Power transmission and protection of power electronics−electromagnetic actuators are crucial parts in renewable energy systems (energy management of photovoltaic, wind power, hybrid and electric vehicles). Consistency optimization of electromagneti
Externí odkaz:
https://doaj.org/article/4850c9fc79404f5485e65ed9533092a0
Publikováno v:
IEEE Transactions on Reliability. 72:37-48
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::f5a22c26d67d4612154f9d6b440785f1
https://doi.org/10.1109/tr.2022.3172416
https://doi.org/10.1109/tr.2022.3172416