检索结果-南通市图书馆

Effect of cavity length detuning on the output characteristics for the middle infrared FEL oscillator of FELiChEM

Chinese Physics C 2017年第10期41卷 139-144页

作者：赵周宇李和廷贾启卡 National Synchrotron Radiation Laboratory University of Science and Technology of China Hefei 230029 China

FELiChEM is an infrared free electron laser（FEL） facility currently under construction, which consists of two oscillators generating middle-infrared and far-infrared laser covering the spectral range of 2.5–200 μm. In this paper, we numerically study the output characteristics of the middle-infrared oscillator with accurate cavity length detuning. Emphasis is put on the temporal structure of the micropulse and the corresponding spectral *** the radiation wavelengths of 50 μm and 5 μm as examples, we show that the output pulse duration can be tuned in the range of 1–6 ps with corresponding bandwidth of 13%–0.2% by adjusting the cavity length *** addition, a special discussion on the comb structure is presented, and it is indicated that the comb structure may arise in the output optical pulse when the normalized slippage length is much smaller than unity. This work has reference value for the operation of FELiChEM and other FEL oscillators.

关键词： free electron laser oscillator cavity length detuning output characteristics comb structure

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

Study on Wind Power output characteristics and Correlation between Load of Region Power System

Study on Wind Power Output Characteristics and Correlation b...

引用

第37届中国控制会议

作者： Lin Zhao Difei Xu Peng Li State Grid Heilongjiang Electric Power Company Limited Shandong LUNENG Genfu Development Co. Ltd.Business Management Branch Shandong Tancheng County Power Supply Company

The power system structure in Three-north regions of our country is single, most of the units are thermal power units, and CHP, the ability of peak regulation is extremely limited. In most cases can only take start-stop for peak adjustment, the economy is very poor. The randomness and uncertainty of the wind power output are one of the key factors for wind power accommodation. In this paper, a provincial power grid is taken as an example. According to the analysis of regional wind power characteristics, the correlation between wind power output and load is studied, which provides support for improving the region power system accommodation capacity of wind power.

关键词： Wind Power output characteristics Correlation between Load and output

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

A statistical model for the design of rotary HTS flux pumps based on deep-learning neuron network

引用

Superconductivity 2022年第3期3卷 46-54页

作者： Zezhao Wen Hongye Zhang Mengyuan Tian Francesco Grilli Markus Mueller a School of Engineering University of EdinburghEdinburgh EH93JLUnited Kingdom School of Engineering University of ManchesterManchester M13BBUnited Kingdom Engineering Department University of CambridgeCambridge CB30FAUnited Kingdom Institute for Technical Physics Karlsruhe Institute of TechnologyKarlsruhe 76131Germany

Rotory high temperature superconducting(HTS)flux pumps can consistently generate a DC voltage by rotating magnets over superconducting tapes,and thus energize the circuit if a closed loop is *** voltage output is a crucial factor to reflect the performance of such an HTS flux pump,which is determined by a set of design specifications,and some of them have been investigated extensively in the current ***,no work has been done yet to study the HTS dynamo output voltage by efficiently integrating all the design parameters *** this paper,a well‐trained deep‐learning neuron network(DNN)with back‐propagation algorithms has been put forward and *** proposed DNN is capable of quantifying the output voltage of an HTS dynamo instantly with an overall accuracy of approximately 98%with respect to the simulated values with all design parameters explicitly *** model possesses a powerful ability to characterize the output behavior of HTS dynamos by considering multiple design parameters,e.g.,airgap,superconductor tape width,operating frequency,remanent flux density,rotor radius,and permanent magnet width,which have covered all the typical design *** output characteristics of an HTS dynamo against each of the design parameters have been successfully demonstrated using this *** to conventional time‐consuming finite element method(FEM)based numerical models,the proposed DNN model has the advantages of automatic learning,fast computation,as well as strong *** the DNN model can greatly facilitate the design and optimization process for HTS *** executable application has been developed accordingly based on the DNN model,which is believed to provide a useful tool for learners and designers of HTS dynamos.

关键词： HTS dynamo Flux pump Deep learning H‐A formulation output characteristics

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

Theoretical study on rotary-sliding disk triboelectric nanogenerators in contact and non-contact modes

引用

Nano Research 2016年第4期9卷 1057-1070页

作者： Tao Jiang Xiangyu Chen Keda Yang Changbao Han Wei Tang Zhong Lin Wang Beijing Institute of Nanoenergy and Nanosystems Chinese Academy of Sciences Beijing 100083 China Computer Network Information Center Chinese Academy of Sciences Beijing 100190 China School of Materials Science and Engineering Georgia Institute of Technology Atlanta GA 30332-0245 USA

The triboelectric nanogenerator （TENG） has emerged as a new and effective mechanical energy harvesting technology. In this work, a theoretical model for a rotary-sliding disk TENG with grating structure was constructed, including the dielectric-to-dielectric and conductor-to-dielectric cases. The finite element method （FEM） was utilized to characterize the fundamental physics of the rotary- sliding disk TENG working in both contact and non-contact modes. The basic properties of disk TENG were found to be controlled by the structural parameters such as tribo-surface spacing, grating number, and geometric size. From the FEM calculations, an approximate V-Q-a relationship was built through the inter- polation method, and then the TENG dynamic output characteristics with arbitrary load resistance were numerically calculated. Finall~ the dependencies of output power and matched resistance on the structural parameters and rotation rate were revealed. The present work provides an in-depth understanding of the working principle of the rotary-sliding disk TENG and serves as important guidance for optimizing TENG output performance in specific applications.

关键词： rotary-sliding disk triboelectric nanogenerator finite element method output characteristics continuous fraction interpolation

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

Modeling and Analysis of a Random Excited Double-Clamped Piezoelectric Energy Harvester

引用

Journal of Beijing Institute of Technology 2017年第3期26卷 297-303页

作者： Xiaoya Zhou Shiqiao Gao Haipeng Liu State Key Laboratory of Explosion Science and Technology Beijing Institute of TechnologyBeijing 100082China

A double-clamped piezoelectric energy harvester subjected to random excitation is presented,for which corresponding analytical model is established to predict its output *** the presented theoretical natural frequency and equivalent stiffness of vibrator,the closed-form expressions of mean power and voltage acquired from the double-clamped piezoelectric energy harvester under random excitation are *** theoretical analysis is conducted for the output performance of the doubleclamped energy harvester with the change of spectrum density（SD）of acceleration,load resistance,piezoelectric coefficient and natural frequency value,which is found to closely agree with Monte Carlo simulation and experimental results.

关键词： double-clamped energy harvester random excitation output characteristics

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

Progress on the Numerical Calculation of Electrical characteristics of Strained SiGe Channel p-MOSFET

Progress on the Numerical Calculation of Electrical Characte...

引用

2012 China Functional Materials Technology and Industry Forum

作者： Jie Yu Chong Wang Yu Yang Institute of Optoelectronic Information Materials Yunnan University

Recent progress in the computer simulation of strained SiGe channel p-MOSFET performance is *** electrical characteristics of strained SiGe channel p-MOSFET,such as threshold voltage,subthreshold characteristics,output characteristics,transconductance, quasistatic C-V characteristics and transfer characteristics,and the effects of Ge mole fraction on electrical characteristics,are well ***,the development of strained SiGe channel p-MOSFET is prospected.

关键词： Strained SiGe channel p-MOSFET Threshold voltage Subthreshold characteristics output characteristics Ge mole fraction

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

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

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：