检索结果-内蒙古大学图书馆

International Conference on Energy, Automation, and Signal (ICEAS)

作者： Saptarshi Das Abhishek Kumar Indranil Pan Anish Acharya Shantanu Das Amitava Gupta School of Nuclear Studies and Applications Jadavpur University Kolkata India Department of Power Engineering Jadavpur University Kolkata India Department of Instrumentation and Electronics Engineering Jadavpur University Kolkata India Reactor Control Division Bhabha Atomic Research Centre Mumbai India

In this paper, the classical Least Square Estimator (LSE) and its improved version the Instrumental Variable (IV) estimator have been used for the identification of an AC servo motor position control system. The data for system identification has been collected from a practical test set-up for fixed command on the final angular position of the servo motor with varying level of velocity and acceleration. The measured data is corrupted then with externally induced random noise having a Gaussian distribution, commonly known as white Gaussian noise (wGn). Performance of the LSE and IV estimators are also compared for fractional Gaussian noise (fGn) which have heavy tails in its statistical distribution and are capable of modeling real world signals having spiky nature.

关键词： Servomotors Acceleration Instruments Data models AC motors Position control Noise

来源：评论

学校读者我要写书评

暂无评论

Optimizing Continued Fraction Expansion Based IIR Realization of Fractional Order Differ-Integrators with Genetic Algorithm

Optimizing Continued Fraction Expansion Based IIR Realizatio...

引用

International Conference on Process Automation, control and Computing (PACC)

作者： Saptarshi Das Basudev Majumder Anindya Pakhira Indranil Pan Shantanu Das Amitava Gupta School of Nuclear Studies and Applications Jadavpur University Kolkata India Department of Instrumentation & Electronics Engineering Jadavpur University Kolkata India Department of Power Engineering Jadavpur University Kolkata India Reactor Control Division Bhabha Atomic Research Centre Mumbai India

Rational approximation of fractional order (FO) differ-integrators via Continued Fraction Expansion (CFE) is a well known technique. In this paper, the nominal structures of various generating functions are optimized using Genetic Algorithm (GA) to minimize the deviation in magnitude and phase response between the original FO element and the rationalized discrete time filter in Infinite Impulse Response (IIR) structure. The optimized filter based realizations show better approximation of the FO elements in comparison with the existing methods and is demonstrated by the frequency response of the IIR filters.

关键词： Accuracy IIR filters Genetic algorithms Optimization MATLAB Approximation methods Polynomials

来源：评论

学校读者我要写书评

暂无评论

Application of RFID technology to construction of high-reliability nuclear power plants

引用

Hitachi Review 2006年第3期55卷 94-98页

作者： Araki, Kenji Kawahata, Junichi Ishiwata, Masayuki Yuto, Yoshihiro Preventive Maintenance Systems Unit Second Department of Systems Research Hitachi Research Laboratory Nuclear Systems Division Power Systems Nuclear Plant Department Nuclear Systems Division Power Systems Information and Control Systems Nuclear Power Control and Instrumentation Systems Engineering Department Power Control Systems Division

OVERVIEW: As regards construction of nuclear power plants, the requirements covering an enormous number of various kinds of product lines in the order of millions of units must be satisfied and rigorous traceability concerning products and manufacturing and inspection operations must be assured. Focusing on the functionality and versatility of RFID technologies that have been gaining much attention over recent years, Hitachi has started development and testing for application of RFID as a solution for three key targets: (1) improving efficiency of management of work operations and goods used in construction of nuclear power plants, (2) assuring high reliability of information traceability, and (3) preventing human errors while improving work efficiency.

关键词： nuclear power plants

来源：评论

学校读者我要写书评

暂无评论

Rod control system oriented for improving operational capability of BWR plants

引用

Hitachi Review 2005年第3期54卷 131-135页

作者： Ishii, Kazuhiko Nozaki, Takeshi Kohara, Kohei Udono, Shigeru Miyashita, Katsuhiko Hitachi Ltd. Nuclear Power Control and Instrumentation Systems Engineering Department Power Control Systems Division Information and Telecommunication Systems Nuclear Plant Control and Instrumentation Engineering Department Control and Instrumentation Design Section Hitachi Works Nuclear Power Service Engineering Development Department Nuclear Systems Division Service Project Group

An RMCS (reactor manual control system) and RPIS (rod position information system), which are next-gene ration products, were developed to assist in stable operation of existing BWR (boiling water reactor) plants. Installation tests of these systems were completed at The Tokyo Electric power Company Incorporated, Kashiwazaki Kariwa nuclear power Station Unit 4, and The Chugoku Electric power Co., Inc., Shimane nuclear power Station Unit 2. The new systems started operation at both of plants in June 2005. The basic concept of these systems is to improve performance [avoidance of LCO (limiting condition of operation)] by maintaining compatibility with existing facilities and by utilizing the functions of a redundant decentralized system. It is a system that monitors the positions of control rods while operating them manually in the BWR plants. A soft logic method was created by adopting the latest controller and optical data transmissions that use the latest IC (CMOS: complementary metal-oxide semiconductor). This method is used in place of the logic method, which uses IC technology (TTL: transistor-transistor logic).

关键词： Boiling water reactors

来源：评论

学校读者我要写书评

暂无评论

A large scale implementation of human factors engineering for the lungmen nuclear power project

A large scale implementation of human factors engineering fo...

引用

American nuclear Society 4th International Topical Meeting on nuclear Plant instrumentation, control and Human Machine Interface Technology

作者： Wu, Tung-Ming Lee, Jeen-Yee Instrumentation and Control Section Department of Nuclear Engineering Taiwan Power Company 20F 242 Roosevelt Rd. Sec. 3 Taipei City 100 Taiwan

ISBN: (纸本)0894486888

When it was decided to adopt digital instrumentation and control systems for the Lungmen nuclear power project, advances in human factors engineering associated with this advanced technology were adopted. The need for a well-planned human factors engineering program for the project was identified at the very beginning of the project. Compliance with the prescribed process and requirements in Revision 0 of NUREG-0711 on Human Factors engineering (HFE) Program Review Model was agreed on as the committed target for the Lungmen project. Comprehensive HFE Implementation Plans, based on the Advanced Boiling Water Reactor Standard Design, were established for implementation in the project. This paper provides an overview of the planning and subsequent implementation of the HFE program elements as prescribed in NUREG-0711, Revision 0, from planning, analysis, design, through verification and validation (V&V) phases. Extensive efforts have been made by Taipower and General Electric nuclear Energy (GENE), supported by an independent review team, also serving as consultant, to help assure compliance with the HFE process and requirements. Results to date and implications for going forward from this process are also presented.

关键词： nuclear power plants

来源：评论

学校读者我要写书评

暂无评论

Human systems integration and advanced technology in engineering department workload and manpower reduction

引用

NAVAL ENGINEERS JOURNAL 2003年第1期115卷 57-65页

作者： Lively, KA Seman, AJ Kirkpatrick, M KENNETH A. LIVELY graduated from the University of Colorado with a BS in applied mathematics and an MS in mathematics in 1976 and from the Massachusetts Institute of Technology with an MS in electrical engineering and the degree ocean engineer in naval architecture and marine engineering in 1984. He retired from the U.S. Navy in 1989 after 23 years of service. Assignments included electrical officer on the USS Constellation (CV 64) project engineer for the DDG 51 machinery control system (NAVSEA) and DDG 51 Technical Director (NAVSEA). He was vice president of the PDI Division of Bird-Johnson Company from July 1989 to November 1998 where he managed various gas turbine and machinery controls related development projects. He joined Anteon Corporation's Systems Engineering Group as senior controls engineer in December 1998 where he provided technical support to the integrated power systems program (NAVSEA PMS 510) and managed the Office of Naval Research Afloat Laboratory. DR. MARK KIRKPATRICK is currently an independent consultant in human factors and work-load/manning analysis and modeling. He holds a Ph.D. degree in experimental psychology from The Ohio State University and has 34 years of experience in applied human factors. From 1982 through 2000 Dr. Kirkpatrick served as the senior vice president of Carlow International. Prior to joining Carlow in 1982 Dr. Kirkpatrick served as a member of the technical staff at North American Rockwell's Missiles Division and as a project director and vice president for Essex Corporation. His areas of expertise include workload simulation task analysis operator-in-the-loop simulation human performance experimentation statistical analysis and human factors T&E. He has directed and/or participated in human factors projects for the U.S. Navy U.S. Army NASA Department of Transportation the U.S. Nuclear Regulatory Commission and private industry. ANTHONY J. SEMAN III is the technical manager for the reduced ship's crew by virtual presence (RSVP) advanced technology d

Aboard current ships, such as the DDG 51, engineering control and damage control activities are manpower intensive. It is anticipated that, for future combatants, the workload demand arising from operation of systems under conditions of normal steaming and during casualty response will need to be markedly reduced via automated monitoring, autonomous control, and other technology initiatives. Current DDG 51 class ships can be considered as a manpower baseline and under Condition III typical engineering control involves seven to eight watchstanders at manned stations in the Central control Station, the engine rooms and other machinery spaces. In contrast to this manning level, initiatives such as DD 21 and the integrated engineering plant (IEP) envision a partnership between the operator and the automation system, with more and more of the operator's functions being shifted to the automation system as manning levels decrease. This paper describes some human systems integration studies of workload demand reduction and, consequently, manning reduction that can be achieved due to application of several advanced technology concepts. Advanced system concept studies in relation to workload demand are described and reviewed including. Piecemeal applications of diverse automation and remote control technology concepts to selected high driver tasks in current DDG 51 activities. Development of the reduced ship's crew by virtual presence system that will provide automated monitoring and display to operators of machinery health, compartment conditions, and personnel health. The IEP envisions the machinery control system as a provider of resources that are used by various consumers around the ship. Resource needs and consumer priorities are at all times dependent upon the ship's current mission and the availability of equipment pawnbrokers.

关键词： Naval warfare

来源：评论

学校读者我要写书评

暂无评论

Optimal Boiler control through Real-time Monitoring of Unburned Carbon in Fly Ash Using Laser Induced Breakdown Spectroscopy

Optimal Boiler Control through Real-time Monitoring of Unbur...

引用

Laser Induced Plasma Spectroscopy and Applications, LIBS 2002

作者： Kurihara, Miki Ikeda, Koji Izawa, Yoshinori Deguchi, Yoshihiro Tarui, Hitoshi Power Plant Engineering Department Nagasaki Shipyard and Machinery Works Mitsubishi Heavy Industries Ltd Japan Control and Electrical Systems Engineering Section Power Plant Engineering Department Nagasaki Shipyard and Machinery Works Mitsubishi Heavy Industries Ltd Japan Applied Physics Laboratory Nagasaki Research and Development Center Mitsubishi Heavy Industries Ltd. 5-717-1 Fukahori-machi Nagasaki851-0392 Japan Thermal Power Engineering Sec. Thermal Power Dept. Thermal and Nuclear Power Div. Tohoku Electric Power CompanyInc Japan

ISBN: (纸本)1557527253

A laser induced breakdown spectroscopy (LIBS) technique has been applied to detect the unburned carbon in fly ash, and an automated LIBS unit has been developed and applied in a 1000MW pulverized coal fired power plant for real-time measurement of unburned carbon in fly ash. Good agreement was shown between measurement results from the LIBS method and those from the conventional method(JIS 8815), with a standard deviation of 0.27%. This result confirms that measured unburned carbon in fly ash using LIBS is accurate enough for the boiler control and boiler control in optimized way is possible using the value of unburned carbon content in fly ash. © 2002 OSA/LIBS.

关键词： Laser induced breakdown spectroscopy

来源：评论

学校读者我要写书评

暂无评论

Maintenance support systems incorporating networks

引用

Hitachi Review 1999年第5期48卷 252-259页

作者： Morita, Kiyonori Murakawa, Makoto Murao, Mitsuo Ota, Nobuyuki Hitachi Ltd. Social Systems Department Systems Engineering Division Hitachi Ltd. Information Engineering Department Power Transmission Division Hitachi Ltd. General Computer Systems Department Omika Control Division Hitachi Engineering Co. Ltd. Nuclear Power Plant Department

Recent years have seen progress in the introduction of information systems to support the administration of electrical facilities, and applications of information on operations and facilities is now becoming properly regulated. Advances in the areas of data processing technology and network technology are contributing to improvements in the functions of support systems. These technologies make possible both the processing of increased volumes of information and the transmission of a wide variety of information. They also address the needs of facilities administration by increasing the ease with which information is communicated between information processing sites, among other things. The procedures addressed by support systems can be divided into three categories: (1) Reporting on the state of facilities operations;(2) Planning for facilities installation and maintenance;and (3) Diagnostic and evaluative reviews of facilities. The "Information Collection System for Operations Sites" is a system and product supporting the reporting of the state of facilities operations. Utilizing multipurpose equipment, in addition to its basic functions of transmitting images and sounds from a site, the system is capable of having memos added to its images, and it is capable of accurately reporting the state of events at a site. Information databases used in planning for facilities installation and maintenance are effective in that they are able to have multifaceted and rapid examinations performed on them. Via the internal network of a power-generating station, the "General Maintenance Administration Support System" makes possible the administration of facilities, administration of work being performed, administration of construction, and administration of operations. There is a trend towards even further progress in the application of support systems to diagnostic and evaluative reviews of facilities. Under the "BWR Water Chemistry Management System," the results of diagnostic re

关键词： Information science

来源：评论

学校读者我要写书评

暂无评论

New current balancing and power factor improving scheme

引用

European Transactions on Electrical power 1991年第5期1卷 261-265页

作者： Gagliardi, F. Lauria, D. Luciano, A.M. Tironi, E. Ubezio, G. Francesco Gagliardi ( 1934) graduated at Naples in Electrical Engineering. He became a Full Professor in Electrical Power Systems in 1972 at University of NaplesAtaly. His researchinterests are electrical power systems power transmission and distribution components and reliability. He is a board member of national compqnies. (University of Naples Electrical Engineering Dep. Via Claudio 21 1-80125 Naples T +39 8 1/7 68 32 13) Davide Lauria ( 1965) received the Electrical Engineering degree from the University of Naples/Italy in 1987. He is a Researcher of the Industrial Department of the University of Cassino. His research interests include electrical power system analysis and simulation. (University of Cassino Industrial Engineering Department Via Zamosch 43 1-03043 Cassino T+39776/31 1084) Angelo M. Luciano (1941) received the Electronics Engineering degree from the University of NaplesAtaly in 1967. From 1967 to 1972 he was Research Assistant with the Electronic Department of the University of Naples. From 1972 to 1980 he was Professor in charge of Nuclear Electronics and since 1980 he has been an Associate Professor of Electronics Engineering at the University. His research interests include switching power systems analysis and design instrumentation and measurements. (University of Naples Electrical Engineering Dep. Via Claudio 2 1 1-80 125 Naples T +39 8 117 68 32 13) group on Electrical Enrico Tironi (1946) received the M. S . degree in Electrical Engineering from the Politecnico di Milano Italy in 1971. In 1972 he joined the Dipartimento di Elettrotecnica of the Politecnico di Milano where he is associate professor at present. His areas of research include: power electronics and harmonics in power systems. Prof. Tironi is a member of the Italian National Research Council (C.N.R.) Power Systems. (University of Milano Electrical Engineering Dep. Piazza Leonard0 da Vinci 32 1-20133 Milano T +392/23 9937 13) Giovanni Ubezio (1952) received the M. S . degree in Electronic Engineering fr

This paper describes the main properties of a new scheme for current balancing and power factor improving of two unbalanced loads. The scheme employs a forced switching two‐phase inverter whose switching output voltage is achieved with PWM modulation. The proposed configuration has safe and reliable operation, permitting furthermore to minimize the harmonic interference transmitted to the network. In the first part of the paper the operating principles of the scheme are carried out and in the second one a possible control strategy is described. Copyright © 1991 John Wiley & Sons, Ltd.

关键词：

来源：评论

学校读者我要写书评

暂无评论

SIMPLIFICATION OF GAS-TURBINE INTAKE ANTI-ICE systems

引用

NAVAL ENGINEERS JOURNAL 1988年第1期100卷 45-52页

作者： EXELL, JR KILLINGER, A LCdr. John R. Excell: USN received a bachelor of architecture from the University of Michigan and a master of science degree in mechanical engineering from the U. S. Navy Postgraduate School. He was commissioned in 1973 serving first as damage control assistant aboard USSGuadalcanal(LPH-7) and later as commissioning main propulsion assistant on USSMerrill(DD-976). He became an engineering duty officer in 1979 and served at Norfolk Naval Shipyard as senior ship superintendent for six ships and later within the shipyard Design Department. In May 1984 LCdr. Exell was assigned to the DD-963 Class Special Projects Office as program manager for air system improvements including the bleed air and anti-ice systems. He recently completed the Defense Systems Management College Ft. Belvoir VA and returned to NavSea PMS 377 as deputy for strategic sealift programs. Arthur Killinger:graduated from the University of Maryland in 1968 with a bachelor of science degree in mechanical engineering. He joined MPR Associates Inc. working on submarine safety design reviews following the loss of USSScorpion(SSN 589). After two years in the U.S. Army Nuclear Reactor Program and a year as U.S. Army engineer maintenance advisor in the Republic of Vietnam he returned to MPR Associates Inc. in 1972. Since then he has worked on nuclear power plant projects for several electric utilities as well as submarine and surface ship overhaul and maintenance improvement programs for the U.S. Navy. Mr. Killinger is a member of the American Society of Naval Engineers and the American Society of Mechanical Engineers.

This paper describes the steps taken to simplify the gas turbine intake anti-ice systems on DD-963 and DDG-993 class ships. The anti-ice system was designed and built as fully-automatic protection against intake duct icing on main propulsion turbines and electric generator turbines. Operating experience with the system indicated that it was nonfunctional more than 60% of the time. The system's poor availability was caused by its complexity, lack of use, lack of spare parts, poor training and documentation, and design and material problems. A Navy Independent Design Review Team (IDRT) reexamined the technical bases for installing an automatic anti-ice system and demonstrated that automatic control was not necessary for gas turbine intake duct anti-icing. A series of design review calculations and shipboard tests confirmed that anti-icing protection could be provided by manual control of installed butterfly valves feeding hot air to each turbine intake. The time from the IDRT design simplification recommendations to the first modification of the anti-ice system was less than one year. To date, half of the 30 of the 35 ships in the two classes have been modified. This system simplification will result in life cycle maintenance cost savings in excess of 13 million dollars. Future CG-47 class and DDG-51 class ships will include this simplified approach to anti-ice system design for gas turbine intakes.

关键词： GAS TURBINES

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：