Zobrazeno 1 - 10
of 588
pro vyhledávání: '"frequency component"'
Publikováno v:
Heliyon, Vol 10, Iss 18, Pp e37970- (2024)
This paper investigates the pilot control strategy and workload associated with the manned electric Vertical Take-Off and Landing (eVTOL) aircraft. This research aims to identify control strategies that are both rational and effective in reducing the
Externí odkaz:
https://doaj.org/article/7f8f3e607ee64b04b1552a384454699f
Publikováno v:
IET Generation, Transmission & Distribution, Vol 18, Iss 7, Pp 1466-1477 (2024)
Abstract Reliable and fast identification of high‐voltage direct current (HVDC) transmission line faults is important to the safety of power system. In traditional DC transmission line protection, differential protection is invulnerable to high fau
Externí odkaz:
https://doaj.org/article/cf0c0c77a5794059aea00590d71238f5
Autor:
Xiaoqiang Sun, Guoshuang Shui
Publikováno v:
Sensors, Vol 24, Iss 15, p 4878 (2024)
When an ultrasonic pulse propagates in a thin plate, nonlinear Lamb waves with higher harmonics and a zero-frequency component (ZFC) will be generated because of the nonlinearity of materials. The ZFC, also known as the static displacement or static
Externí odkaz:
https://doaj.org/article/3d9881b14a2643fa8a780b19a159f2a4
Publikováno v:
Energies, Vol 17, Iss 7, p 1609 (2024)
With the continuous warming of the global climate, expanding the use of renewable energy has become one of the main social responsibilities. However, as the number of installed wind turbines and their physical dimensions continue to increase, the iss
Externí odkaz:
https://doaj.org/article/321a48aeaa374cb6baf5facc299ce7ad
Publikováno v:
IET Generation, Transmission & Distribution, Vol 17, Iss 1, Pp 128-145 (2023)
Abstract The access of large‐scale renewable energy and power electronic equipment to the power grid makes the power source and short‐circuit paths possess time‐varying characteristics when faults occur, which has a serious impact on the tradit
Externí odkaz:
https://doaj.org/article/1e5a0f200ff8457dbc8c564ec778893f
Publikováno v:
Journal of Geodesy and Geoinformation Science, Vol 5, Iss 4, Pp 72-85 (2022)
In this paper, an efficient technique for removing strip noise from remote sensing images is proposed in order to better retain image details. Firstly, the remote sensing image with strip noise is decomposed by wavelet technology; Secondly, two varia
Externí odkaz:
https://doaj.org/article/e2db132be7c34a1c90c376cb9dea34ec
Autor:
Kai KURIHARA, Toru YAMAZAKI
Publikováno v:
Nihon Kikai Gakkai ronbunshu, Vol 89, Iss 922, Pp 22-00331-22-00331 (2023)
Overhead cranes are widely used to transport heavy loads, and their efficient operation requires fast and accurate positioning. However, residual vibration which prevents positioning accuracy generally tends to be induced by fast transportation. In p
Externí odkaz:
https://doaj.org/article/7082d5713e7542c7b2eb0c008a580090
Autor:
Yuji Yokobori, Hayato Nakane, Chirika Uehara, Toru Nagasawa, Satoshi Mitsuyama, Kiyomi Ohkawa, Kazuomi Kario, Seiji Ozawa
Publikováno v:
Physiological Reports, Vol 11, Iss 2, Pp n/a-n/a (2023)
Abstract Spectral analysis of heart rate variability (HRV) is widely used as a non‐invasive method to assess the cardiovascular autonomic function. Of the two main frequency components of HRV, namely low‐frequency (LF, 0.04–0.15 Hz) and high‐
Externí odkaz:
https://doaj.org/article/57408a063ccb48f78b7a59f9e215ac39
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