检索结果-内蒙古大学图书馆

IEEE International Conference on Mechatronics and Automation

作者： Xianhui Meng Fusheng Zhang Weiling Liu Chao Tan Institute of Manned Space System Engineering China Academy of Space Technology Beijing China Tianjin Key Laboratory of Process Measurement and Control Tianjin University Tianjin China

ISBN: (纸本)9781479970995

The research method of identification of the electronic equipment's power-on characteristics based on the data of bus voltage ripple is introduced. The main purpose is to achieve the recognition of the equipment's power-on characteristics through a certain algorithm design, and provide reference for the follow-up intelligent applications of the bus-ripple-tester. Two methods are used here. One is frequency spectrum analysis based on the collected signals. Due to the differences of spectrum distribution between these equipment's signals collected before and after their power-on time, the frequency band of each equipment's characteristic distribution is different, which make it possible to achieve the purpose of identification. The other is the time-frequency analysis based on wavelet transform. According to the difference of wavelet energy of the equipment's signals collected before and after their power-on time, the equipment can be recognized.

关键词： Time-frequency analysis Noise reduction Signal processing Continuous wavelet transforms

来源：评论

学校读者我要写书评

暂无评论

Influence of condensed water temperature on thermal efficiency of coal-fired power plant and energy strategy

Influence of condensed water temperature on thermal efficien...

引用

3rd International Conference on Energy and Environmental Protection, ICEEP 2014

作者： Zeng, De Liang Diao, Shu Wen Hu, Yong Gao, Shan Li, Qing North China Electric Power University Beijing Key Laboratory of New Technology and System on Measuring and Control for Industrial Process Changping District 102206 Beijing China

ISBN: (纸本)9783038351344

For the problem of the abandoned large-scale wind power currently, in order to improve the utilization of wind power and make full use of wind resources, a method of using wind power to heat the condensed water through electrothermal furnace is proposed. On the basis of mass and energy conservation, through analyzing variable condition of the regenerative heating system and water-cooled condenser, the dynamic mathematical model is created and then the dynamic influence of condensed water temperature on the economy of thermal power plant is studied. This paper, taking a typical 660MW water-cooled unit as an example, discusses the dynamic characteristics of steam turbine and energy-saving effects of this method. Results show that obvious economic effects can be obtained through non-grid-connected wind power heating the low-pressure condensed water, which can reduce the steam extraction flow from steam turbine, improve the thermal efficiency of thermal power plant and save the amount of coal. It has positive significance to digging energy-saving potential of plant. © (2014) Trans Tech Publications, Switzerland.

关键词： Water temperature

来源：评论

学校读者我要写书评

暂无评论

Moving horizon H8 control of variable speed wind turbines with actuator saturation

Moving horizon H8 control of variable speed wind turbines wi...

引用

作者： Ma, Miaomiao Chen, Hong Liu, Xiangjie Allgöwer, Frank Beijing Key Laboratory of New Technology and System on Measuring and Control for Industrial Process North China Electric Power University No. 2 Beinong Road Huilongguan Changping District Beijing 102206 China Institute for Systems Theory and Automatic Control University of Stuttgart Pfaffenwaldring 9 Stuttgart 70550 Germany Department of Control Science and Engineering Jilin University Campus NanLing Renmin Strasse 5988 Changchun 130025 China

This study suggests a moving horizon H8 control scheme for variable speed wind turbines above the rated wind speed to maintain the output power at the rated value for variable operating points. A constrainedH8 control problem is solved at each sampling time with the update of not only the initial condition but also the prediction model based on different operating points. Closed-loop properties inclusive of L2 disturbance attenuation are discussed in the framework of dissipation theory. The moving horizon H8 control considers the non-linear dynamic aspect of the wind turbine, the turbulent nature of the wind and actuator saturations. Analysis and simulation results for WD34 wind turbine show possible improvements on the output electrical power regulation performance for variable operating points, while respecting actuator saturation limits. © The Institution of Engineering and technology 2014.

关键词： Wind turbines

来源：评论

学校读者我要写书评

暂无评论

A molecular cryptography model based on structures of DNA self-assembly

引用

Chinese Science Bulletin 2014年第11期59卷 1192-1198页

作者： Yang, Jing Ma, Jingjing Liu, Shi Zhang, Cheng Beijing Key Laboratory of New Technology and System on Measuring and Control for Industrial Process School of Control and Computer Engineering North China Electric Power University Beijing China Key Laboratory of High Confidence Software Technologies Ministry of Education Institute of Software School of Electronics Engineering and Computer Science Peking University Beijing China

With the progress of DNA computing, DNA-based cryptography becomes an emerging interdisciplinary research field. In this paper, we present a novel DNA cryptography that takes advantage of DNA self-assembled structure. Making use of the toehold strands recognition and strand displacement, the bit-wise exclusive-or (XOR) operation is carried out to fulfill the information encryption and decryption in the form of a one-time-pad. The security of this system mainly comes from the physical isolation and specificity of DNA molecules. The system is constructed by using complex DNA self-assembly, in which technique of fluorescent detection is utilized to implement the signal processing. In the proposed DNA cryptography, the XOR operation at each bit is carried out individually, thus the encryption and decryption process could be conducted in a massive, parallel way. This work may demonstrate that DNA cryptography has the great potential applications in the field of information security.

关键词：

来源：评论

学校读者我要写书评

暂无评论

Data driven state detection algorithm for ash deposition detection

Data driven state detection algorithm for ash deposition det...

引用

2013 18th International Conference on Methods and Models in Automation and Robotics, MMAR 2013

作者： Liu, Jiwei Liu, Jizhen Deliang, Zeng Chang, Taihua Key Laboratory of Measurement and Control New Technology and System for Industrial Process North China Electric Power University Beijing China

ISBN: (纸本)9781467355063

A data driven state detection algorithm was proposed to improve the security and reliability of equipment. The algorithm is used for one class of objects whose state parameters change slowly and cumulatively in the long term. The concepts of multi-scale system, multi-scale entropy and multi-scale exergy were used to describe these processes. With the help of the algorithm, an ash deposition index for the radiant heating surface of a 600 MW unit was constructed to monitor the states of the instruments. Noise was analyzed. The results of simulation experiments demonstrate the effectiveness of the algorithm, which can provide a technical basis for condition maintenance. © 2013 West Pomeranian University of technology.

关键词： Exergy

来源：评论

学校读者我要写书评

暂无评论

26th Annual Computational Neuroscience Meeting (CNS*2017): Part 3 Antwerp, Belgium. 15-20 July 2017 Abstracts

引用

BMC NEUROSCIENCE 2017年第SUPPL 1期18卷 95-176页

作者： [Anonymous] Department of Neuroscience Yale University New Haven CT 06520 USA Department Physiology & Pharmacology SUNY Downstate Brooklyn NY 11203 USA NYU School of Engineering 6 MetroTech Center Brooklyn NY 11201 USA Departament de Matemàtica Aplicada Universitat Politècnica de Catalunya Barcelona 08028 Spain Institut de Neurobiologie de la Méditerrannée (INMED) INSERM UMR901 Aix-Marseille Univ Marseille France Center of Neural Science New York University New York NY USA Aix-Marseille Univ INSERM INS Inst Neurosci Syst Marseille France Laboratoire de Physique Théorique et Modélisation CNRS UMR 8089 Université de Cergy-Pontoise 95300 Cergy-Pontoise Cedex France Department of Mathematics and Computer Science ENSAT Abdelmalek Essaadi’s University Tangier Morocco Laboratory of Natural Computation Department of Information and Electrical Engineering and Applied Mathematics University of Salerno 84084 Fisciano SA Italy Department of Medicine University of Salerno 84083 Lancusi SA Italy Dipartimento di Fisica Università degli Studi Aldo Moro Bari and INFN Sezione Di Bari Italy Data Analysis Department Ghent University Ghent Belgium Coma Science Group University of Liège Liège Belgium Cruces Hospital and Ikerbasque Research Center Bilbao Spain BIOtech Department of Industrial Engineering University of Trento and IRCS-PAT FBK 38010 Trento Italy Department of Data Analysis Ghent University Ghent 9000 Belgium The Wellcome Trust Centre for Neuroimaging University College London London WC1N 3BG UK Department of Electronic Engineering NED University of Engineering and Technology Karachi Pakistan Blue Brain Project École Polytechnique Fédérale de Lausanne Lausanne Switzerland Departement of Mathematics Swansea University Swansea Wales UK Laboratory for Topology and Neuroscience at the Brain Mind Institute École polytechnique fédérale de Lausanne Lausanne Switzerland Institute of Mathematics University of Aberdeen Aberdeen Scotland UK Department of Integrativ

来源：评论

学校读者我要写书评

暂无评论

Determination of the optimal initial steam pressure for the power plant under different loads

Determination of the optimal initial steam pressure for the ...

引用

2012 3rd International Conference on Manufacturing Science and technology, ICMST 2012

作者： Zeng, Deliang Peng, Can Guan, Zhaoliang Shen, Rui Beijing Key Laboratory of New Technology System on Measuring and Control for Industrial Process North China Electric Power University Beijing 102206 China

ISBN: (纸本)9783037855638

Combined with the thermal system analysis, the mathematical model for selecting the optimal initial pressure of the power unit is established based on the comprehensive consideration of the effect of main steam pressure on governing stage efficiency, steam feed pump consumption and flow passage efficiency. Then the steam pressure with the maximum unit efficiency is searched using variable condition calculation. With quantitative calculations of N600-16.7/537/537-I unit of Pan Shan thermal power plant taken as an example, the optimal initial pressure is obtained by exhaustive method around the 75% load point. The results reveal that the unit power, heat absorption and unit efficiency all increase with the increase of the main steam pressure. However, the increasing velocity of efficiency is less than heat absorption when main steam pressure attains to certain value, which makes the unit efficiency begin to decrease. Therefore, this main steam pressure is the optimal initial point to be searched. © (2013) Trans Tech Publications, Switzerland.

关键词： Steam

来源：评论

学校读者我要写书评

暂无评论

Real-time pollution monitoring model of convection heating surfaces based on coal online soft sensing

Real-time pollution monitoring model of convection heating s...

引用

2012 3rd International Conference on Manufacturing Science and technology, ICMST 2012

作者： Zeng, Deliang Guan, Zhaoliang Peng, Can Zhang, Man Beijing Key Laboratory of New Technology and System on Measuring and Control for Industrial Process North China Electric Power University Beijing 102206 China

ISBN: (纸本)9783037855638

This paper presents a real-time pollution monitoring model of convection heating surfaces based on coal online soft sensing, This model reality the optimization calculation of clean factor and get the information of coal moisture, ash content and ultimate only according to the existing measuring points and data in the Distributed control system (DCS) of thermal power plants, no need to use additional equipment. Used this technique in 1000MW power units and the result shows that, the computational accuracy of clean factor has greatly improved, which will correct the boiler blowing operation. © (2013) Trans Tech Publications, Switzerland.

关键词： Distributed parameter control systems

来源：评论

学校读者我要写书评

暂无评论

new energy power generation process output complementary and coordinated control

New energy power generation process output complementary and...

引用

2013 International Conference on Vehicle and Mechanical Engineering and Information technology, VMEIT 2013

作者： Gao, Ming-Ming Hou, Jie Zeng, De-Liang Lei, Xiu-Jian Tang, Jun Zhang, Ming-Sheng Beijing Key Laboratory of Measurement and Control New Technology and System for Industrial Process State Key Lab of Alternate Electric Power System With Renewable Energy Sources North China Electric Power University Beijing China Sichuan Baima Circulating Fluidized Bed Exampled Power Limited Liability Company Neijiang China

ISBN: (纸本)9783037858202

In view of the current high rate of abandoned wind, photovoltaic power generation costs and wind-fire bundling mode, in the active power control of the wind of low load operation of motor fluctuations in the fire team leader, the subject in the study of wind power, photovoltaic power generation, power, battery energy storage based on the load response characteristic, design the scheduler, a wind and photovoltaic power plant active power scheduling for equipment, allocation of plant-level optimal load distribution system of the thermal power plant joint scheduling, in order to improve the stability of output of new energy, reduce the energy consumption of the whole network. At the same time, the wind and photovoltaic power plant energy storage system and wind farm output coordination problem is equivalent to a mixed integer programming problem to be solved, to simultaneously determine fans and solar panels and bear the load rate;for thermal power plant load distribution optimization design of the minimum unit involved in strategy reduces the effect of variable load, variable load on set pressure and high temperature parts life. This topic to some extent to improve the wind energy and solar energy utilization, helps to reduce the carbon fuel usage, has certain theoretical and practical significance. © (2013) Trans Tech Publications, Switzerland.

关键词： Wind power

来源：评论

学校读者我要写书评

暂无评论

Application of rough set technology to control information system of CFBB

引用

2013 International Conference on Energy Research and Power Engineering, ERPE 2013

作者： Gao, Ming Min Hou, Jie Zeng, De Liang Lei, Xiu Jian Wu, Yu Ping Zhang, Ming Sheng Beijing Key Laboratory of Measurement and Control New Technology and System for Industrial Process State Key Lab of Alternate Electric Power System With Renewable Energy Sources North China Electric Power University 102206 China Sichuan Baima Circulating Fluidized Bed Exampled Power Limited Liability Company 641000 China

ISBN: (纸本)9783037857588

Circulating fluidized bed boiler(CFBB) is a distributed parameter, nonlinear, time-varying and multivariate coupling system. Considering these, the core identity of Rough Set and the theory of self-organizing neural fuzzy inference system is applied to the control system of CFBB. The system is carried out toward the 300MW CFBB in Baima Sichuan province, and finally improve the performance of CFBB effectively. © (2013) Trans Tech Publications, Switzerland.

关键词： Data mining

来源：评论

学校读者我要写书评

暂无评论

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

请选择保存的检索档案：

请选择收藏分类：

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

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

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：