Results 11 to 20 of about 25,341 (70)

Design of high reliability beacon system based on GPS and Beidou

open access: yesDianzi Jishu Yingyong, 2018
A new miniaturized beacon is designed aiming at the retrieval of aircraft recorder. The beacon consists of a GPS module, a control unit, a Beidou module and a power supply module.
Yu Haobo   +3 more
doaj   +1 more source

Millimeter-wave noise modeling of nanoscale MOSFETs

open access: yesDianzi Jishu Yingyong, 2018
Based on the physical structure of 40 nm MOSFETs, this paper establishes a unified MOSFET millimeter-wave noise model to characterize the characteristics of drain-current noise, inducted gate-current noise and cross-correlation noise between them.
Peng Xiaomei, Zhao Aifeng, Wang Jun
doaj   +1 more source

Restoration of online video ferrography images for out-of-focus degradations

open access: yesEURASIP Journal on Image and Video Processing, 2018
Ferrography is a technology that can be applied in inspecting features of wear particles in machines and inferring their health status. With the development of online ferrography, which employs image processing to captured wear particle images, the ...
Wenkui Xi   +5 more
doaj   +1 more source

Real-time attacks blind detection and analysis algorithm of mobile internet network

open access: yesDianzi Jishu Yingyong, 2018
Attack detection algorithms of large scale mobile internet network need the prior information of attack behaviors or supervised learning to attack behaviors, so these algorithms is not real time and applicable, a real-time attacks blind detection and ...
Shi Erying, Wang Zheng
doaj   +1 more source

A high time slot utilization MAC protocol for terahertz wireless personal area networks

open access: yesDianzi Jishu Yingyong, 2018
To resolve the problem that the standard aggregation frame mechanism and slot application method of the existing IEEE802.15.3c and High Efficient Fairness MAC(HEF-MAC) protocol applied to the terahertz wireless personal area network is not perfect, a ...
Ren Zhi, Tian Jieli, You Lei, Lv Yuhui
doaj   +1 more source

Design on RF-DC converter of the receiving system of wirelesspower transmission

open access: yesDianzi Jishu Yingyong, 2018
The traditional bridage full wave RF-DC conversion circuit ignores the diode conduction loss resulting to system efficiency down. This paper design a RF-DC converter circuit of the receiving system of wireless power transmission based on class-E zero ...
Chen Li   +3 more
doaj   +1 more source

I–f closed‐loop starting strategy of high‐speed PMSM based on current vector adaptive regulation

open access: yesIET Power Electronics, 2023
Conventional I–f startup control algorithms often lead to significant speed fluctuations, extended convergence times, and sluggish dynamic responses when the motor is working at the acceleration process.
Guxuan Xu, Feng Zhao, Tao Liu
doaj   +1 more source

High-gain quadratic boost DC converter based on cld module

open access: yesDianzi Jishu Yingyong, 2018
In order to meet the demand of high-gain direct-current boost converter in the process of using new energy, a novel quadratic boost direct-current converter is proposed.
Zhao Xinkuan   +3 more
doaj   +1 more source

Adaptive inertia and damping of grid‐connected inverter with improved VSG control

open access: yesIET Power Electronics, 2023
The control technology of virtual synchronization generator (VSG) based on energy storage system is proposed to compensate for the inertia and damping loss caused by the grid connection of distributed generators.
Zhitao Ling   +3 more
doaj   +1 more source

A Multifunctional Reading Assistant for the Visually Impaired

open access: yesEURASIP Journal on Image and Video Processing, 2007
In the growing market of camera phones, new applications for the visually impaired are nowadays being developed thanks to the increasing capabilities of these equipments.
Céline Mancas-Thillou   +4 more
doaj   +1 more source

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