Results 21 to 30 of about 67,702 (286)

Traction Network Protection Based on Similarity of Transient Current Waveform

open access: yesFrontiers in Energy Research, 2022
In this paper, a protection scheme for the traction network of the penetrating co-phase traction direct power supply system based on the waveform similarity at both ends of line is proposed.
Shilong Chen   +6 more
doaj   +1 more source

Acoustic Emission Monitoring of Carbon Fibre Reinforced Composites with Embedded Sensors for In-Situ Damage Identification

open access: yesSensors, 2021
Piezoelectric sensors can be embedded in carbon fibre-reinforced plastics (CFRP) for continuous measurement of acoustic emissions (AE) without the sensor being exposed or disrupting hydro- or aerodynamics.
Arnaud Huijer   +2 more
doaj   +1 more source

Classification and model reconstruction method of non‐cooperative multifunctional radar waveform unit

open access: yesIET Radar, Sonar & Navigation, 2023
There are many variations in the form of multifunctional radar signals. At present, the problem associated with the highest concern in the field of electronic reconnaissance is the inversion of its working mode from the reconnaissance data.
Neng Jiang, Hongmin Zhang
doaj   +1 more source

Fusion fault line selection method of small current grounding fault based on VMD

open access: yesGong-kuang zidonghua, 2023
At present, the fault line selection method of coal mine distribution network has the problem of fault line selection failure when the relevant fault features are not obvious.
SUN Kongming   +5 more
doaj   +1 more source

New pilot protection method based on the current fault component waveform similarity

open access: yesIET Generation, Transmission & Distribution, 2023
In order to improve the ability of the modular multi‐level converter to quickly clear and isolate faults in the multi‐terminal flexible DC grid, this paper analyzes the characteristics of current faults in the multi‐terminal flexible direct current grid,
Shuping Gao   +3 more
doaj   +1 more source

基于波形相似性的单台地震目录校正

open access: yesDizhen xuebao, 2022
本文基于波形相似性提出了一种适用于地震序列中单台事件目录校正的方法。以福建仙游地震序列为研究对象,应用双差地震定位(HypoDD)算法对多台事件进行重定位,依据记录波形相似性将仙游地震序列事件划分为161个事件丛集,以多台事件重定位目录为参考,对单台事件目录进行校正。结果表明,本方法能够有效地实现单台事件目录的合理校正,有助于提升地震序列目录的完整性和地震目录的实用性。以HypoDD重定位目录为参考的校正目录可用于地震参数计算。分析校正后的仙游地震序列目录认为 ...
Hongcai Zhang   +7 more
doaj   +1 more source

Towards Dual-functional Radar-Communication Systems: Optimal Waveform Design [PDF]

open access: yes, 2017
We focus on a dual-functional multi-input-multi-output (MIMO) radar-communication (RadCom) system, where a single transmitter communicates with downlink cellular users and detects radar targets simultaneously.
Li, Ang   +5 more
core   +2 more sources

Mattress-Based Non-Influencing Sleep Apnea Monitoring System

open access: yesSensors, 2023
A mattress-type non-influencing sleep apnea monitoring system was designed to detect sleep apnea-hypopnea syndrome (SAHS). The pressure signals generated during sleep on the mattress were collected, and ballistocardiogram (BCG) and respiratory signals ...
Pengjia Qi   +6 more
doaj   +1 more source

Imaging Stress and Faulting Complexity Through Earthquake Waveform Similarity [PDF]

open access: yesGeophysical Research Letters, 2020
AbstractWhile the rupture processes of nearby earthquakes are often highly similar, characterizing the differences can provide insight into the complexity of the stress field and fault network in which the earthquakes occur. Here we perform a comprehensive analysis of earthquake waveform similarity to characterize rupture processes in the vicinity of ...
Trugman, Daniel T.   +2 more
openaire   +2 more sources

Identify incipient faults through similarity comparison with waveform split-recognition framework

open access: yesFrontiers in Energy Research, 2023
Introduction: Incipient faults of distribution networks, if not detected at an early stage, could evolve into permanent faults and result in significant economic losses. It is necessary to detect incipient faults to improve power grid security.
Xinlu Tang   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy