检索结果-南通市图书馆

Performance improvement in double-ended RDTS by suppressing the local external physics perturbation and intermodal dispersion

引用

Chinese Optics Letters 2019年第7期17卷 17-22页

作者：李健许扬张明江张建忠乔丽君王涛 Key Laboratory of Advanced Transducers and Intelligent Control System Ministry of Education and Shanxi ProvinceTaiyuan 030024China College of Physics&Optoelectronics Taiyuan University of TechnologyTaiyuan 030024China

We propose and experimentally demonstrate a novel Raman-based distributed fiber-optics temperature sensor(RDTS) for improving the temperature measurement accuracy and engineering *** proposed method is based on double-ended demodulation with a reference temperature and dynamic dispersion difference compensation method, which can suppress the effect of local external physics perturbation and intermodal dispersion on temperature demodulation ***, the system can omit the pre-calibration process by using the reference temperature before the temperature *** experimental results of dispersion compensation indicate that the temperature accuracy optimizes from 5.6℃ to 1.2℃, and the temperature uncertainty decreases from 16.8℃ to 2.4℃.Moreover, the double-ended configuration can automatically compensate the local external physics perturbation of the sensing fiber, which exhibits a distinctive improvement.

关键词： Performance improvement double-ended RDTS intermodal dispersion

来源：

维普期刊数据库

同方期刊数据库评论

在线全文

学校读者我要写书评

暂无评论

Extended Anode Effect for Tube Inner Coating of Non-Conductive Ceramics by Pulsed Coaxial Magnetron Plasma

引用

Materials Sciences and Applications 2018年第1期9卷 1-10页

作者： Musab Timan Idriss Gasab Hiroyuki Sugawara Kei Sakata Hiroshi Fujiyama Graduate School of Engineering Nagasaki University Nagasaki Japan GEOMATEC Co Ltd. Miyagi Japan

For uniform tube inner coating of non-conductive thin films, the double-ended coaxial magnetron pulsed plasma (DCMPP) method was investigated. In this study, coating of TiN and TiO2 was performed. It was clearly shown that the extended anode effect was strongly influenced by the electric resistance of the coated thin films on the inner surface of an insulator tube. Additionally, high frequency (100 kHz) was better for relatively high plasma density. On the other hand, in the case of titanium oxide deposition, negative ion productions drastically decrease the deposition rate and the shifting velocity of plasma main position for coated TiO2 films.

关键词： double-ended Coaxial Magnetron Pulsed Plasma Tube Inner Coating Extended Anode Effect Fine Ceramic Films Titanium Nitride Films Titanium Oxide Films

来源：

维普期刊数据库评论

在线全文

维普期刊数据库

学校读者我要写书评

暂无评论

A NOVEL FAULT LOCATION ALGORITHM UTTLIZED IN MARINE SYSTEM WITH CWT

A NOVEL FAULT LOCATION ALGORITHM UTTLIZED IN MARINE SYSTEM W...

引用

2011 International Conference on Advanced Power System Automation and Protection(APAP 2011)

作者： David Thomas Mark Sumner GGIMER Group Department of Electrical and Electronic Engineer University of NottinghamUK NG72RD

This paper introduces a method for fault location in a marine power system which uses the voltage and current transient information at a power supply point and the remote point beyond the fault location to estimate the fault position. The proposed algorithm was demonstrated by computer simulation in Matlab with a 6-zone marine power system which has short distribution cables and requires fast and accurate fault location. The simulation results show good accuracy when the proposed algorithm was utilized in both for a single zone and for two adjacent zones regardless the variation of fault impedances.

关键词： Fault location transient measurement double-ended impedance calculation

来源： cnki会议评论

在线全文

cnki会议

学校读者我要写书评

暂无评论

欢迎您,

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案：

请选择收藏分类：

通借通还

欢迎您,

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

在线全文

在线全文

在线全文

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：