Results 1 to 10 of about 496,751 (149)

Study of heat pipe in motor cooling: A review [PDF]

open access: yesE3S Web of Conferences, 2021
The heat pipe as one of the most efficient heat exchanger device is used in many thermal engineering applications. Through sufficient literature research and summary, a comprehensive and systematic analysis of the application of heat pipe cooling ...
Chen Zutao, Yu Zhongjun, Fu Jia, Liu Bin
doaj   +1 more source

The sensorless control strategy of UAV rotor motor in full speed range [PDF]

open access: yesE3S Web of Conferences, 2021
UAV (Unmanned Aerial Vehicle) has broad application prospects in various fields. In order to meet the needs of stability and efficiency during flight, a surface-mounted permanent magnet synchronous motor is used as its rotor motor, and a position ...
Ma Siyuan   +3 more
doaj   +1 more source

A Collaborative Governance Strategy for Power Quality in AC/DC Distribution Networks Considering the Coupling Characteristics of Both Sides

open access: yesSensors, 2023
The interactions between power quality in the AC-DC distribution network segments contribute to the distributed propagation of power quality anomalies throughout the entire network.
Jiang Wang   +6 more
doaj   +1 more source

Analysis of the application and development of integrated electric power technology for unmanned ships

open access: yesZhongguo Jianchuan Yanjiu, 2022
With the constant development of power, information and other technologies, the advantages of unmanned ships are emerging in anti-mine, anti-submarine, electronic warfare, maritime security, maritime interception, and other military fields.
Dong WANG   +5 more
doaj   +1 more source

Effect of Cross-eye Jamming on the Active-passive Composite Monopulse Radar

open access: yesLeida xuebao, 2022
Cross-eye jamming is an electronic countermeasure technology used to cause angular deviation of monopulse radar via multiple coherent sources. Despite a complex electromagnetic environment, using active-passive composite monopulse radar is a development ...
Dong LI   +4 more
doaj   +1 more source

An adaptive two‐dimensional orthogonalization scheme for non‐linear digital canceller in full‐duplex radios

open access: yesElectronics Letters, 2022
In this letter, an adaptive two‐dimensional orthogonalization (ATDO) scheme for non‐linear digital canceller is proposed to realize self‐interference (SI) suppression in full‐duplex radios. The proposed scheme consists of three parts.
Zhongpu Cui   +5 more
doaj   +1 more source

A Novel Ensemble Fault Diagnosis Model for Main Circulation Pumps of Converter Valves in VSC-HVDC Transmission Systems

open access: yesSensors, 2023
The intelligent fault diagnosis of main circulation pumps is crucial for ensuring their safe and stable operation. However, limited research has been conducted on this topic, and applying existing fault diagnosis methods designed for other equipment may ...
Sihan Zhou   +9 more
doaj   +1 more source

Theoretical model of lithium iron phosphate power battery under high‐rate discharging for electromagnetic launch

open access: yesInternational Journal of Mechanical System Dynamics, 2021
Due to the large error of the traditional battery theoretical model during large‐rate discharge for electromagnetic launch, the Shepherd derivative model considering the factors of the pulse cycle condition, temperature, and life is proposed by the Naval
Ren Zhou   +5 more
doaj   +1 more source

Deep Learning Techniques in Intelligent Fault Diagnosis and Prognosis for Industrial Systems: A Review

open access: yesSensors, 2023
Fault diagnosis and prognosis (FDP) tries to recognize and locate the faults from the captured sensory data, and also predict their failures in advance, which can greatly help to take appropriate actions for maintenance and avoid serious consequences in ...
Shaohua Qiu   +6 more
doaj   +1 more source

On the Expressive Power of Data Integration Systems [PDF]

open access: yes, 2002
There are basically two approaches for designing a data integration system. In the global-as-view (GAV) approach, one maps the concepts in the global schema to views over the sources, whereas in the local-as-view (LAV) approach, one maps the sources into views over the global schema.
ANDREA CALÌ   +3 more
openaire   +2 more sources

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