检索结果-内蒙古大学图书馆

IEEE Conference on Decision and control

作者： Gabriel Hulkó Boris Rohal-Ilkiv Pavol Noga Slavomír Lipár Institute of Automation Measurement and Applied Informatics Faculty of Mechanical Engineering (IAMAI-FME-STU) and Center for Control of Distributed Parameter Systems Slovak University of Technology in Bratislava Nám Bratislava Slovakia FME-STU Nám. IAMAI Bratislava Slovakia FME-STU Nám IAMAI Bratislava Slovakia

ISBN: (纸本)9781467320658

Thanks to development of information technology, the so-called virtual software environments offer wide possibilities for the estimation of time-space dynamical characteristics of energy systems, including modeling, control and design of distributed parameter systems. Based on these advances, we present a novel approach to control energy systems as lumped-input and distributed-parameter-output systems. An adaptive-predictive controller is deployed to control temperature fields to ensure optimal conditions for the desulphurization process in a coal-burning fluidized bed furnace, demonstrating the potential of the proposed methodology.

关键词： Aerospace electronics Temperature control Software Process control Fuels Distributed parameter systems

来源：评论

学校读者我要写书评

暂无评论

Deriving color images from noisy Bayer data using local demosaicking and non-local denoising

Deriving color images from noisy Bayer data using local demo...

引用

4th International Congress on Image and Signal Processing, CISP 2011

作者： Nawrath, Marcel Jäkel, Jens Institute of Measurement Technology and Control Engineering Leipzig University of Applied Sciences D-04251 Leipzig Germany

ISBN: (纸本)9781424493067

A widely used solution for cost effective and small cameras are single sensors with a color filter array (CFA). The most popular type of CFA is the Bayer color filter array. Only red, green and blue color components are passed to the sensor depending on their coordinates. In this paper a new method is presented to derive color images from noisy Bayer filtered data. The denoising and interpolation steps are done separately, using local techniques for color interpolation and non-local filters for denoising. The advantage of the method are less blurring and reduced color artifacts especially for highly textured images as compared to methods using local filtering for denoising. © 2011 IEEE.

关键词： Interpolation

来源：评论

学校读者我要写书评

暂无评论

Cooperative MIMO Channel Modeling and Multi-Link Spatial Correlation Properties

引用

IEEE Journal on Selected Areas in communications 2012年第2期30卷 388-396页

作者： Xiang Cheng Cheng-Xiang Wang Haiming Wang Xiqi Gao Xiao-Hu You Dongfeng Yuan Bo Ai Qiang Huo Ling-Yang Song Bing-Li Jiao School of Electronics and Computer Science Peking University Beijing China Key Laboratory of Wireless Sensor Network & Communication Shanghai Institute of Microsystem and Information Technology Chinese Academy of Sciences China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University China Joint Research Institute for Signal and Image Processing School of Engineering & Physical Sciences Heriot-Watt University Edinburgh UK School of Information Science and Engineering South East University Najing China School of Information Science and Engineering Shandong University Jinan China State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing China

In this paper, a novel unified channel model framework is proposed for cooperative multiple-input multiple-output (MIMO) wireless channels. The proposed model framework is generic and adaptable to multiple cooperative MIMO scenarios by simply adjusting key model parameters. Based on the proposed model framework and using a typical cooperative MIMO communication environment as an example, we derive a novel geometry-based stochastic model (GBSM) applicable to multiple wireless propagation scenarios. The proposed GBSM is the first cooperative MIMO channel model that has the ability to investigate the impact of the local scattering density (LSD) on channel characteristics. From the derived GBSM, the corresponding multi-link spatial correlation functions are derived and numerically analyzed in detail.

关键词： MIMO Correlation Channel models Scattering Educational institutions Fading Adaptation models

来源：评论

学校读者我要写书评

暂无评论

Evolutionary multi-objective optimization of inspection frequencies for substation condition-based maintenance

Evolutionary multi-objective optimization of inspection freq...

引用

6th International Forum on Strategic technology, IFOST 2011

作者： Sang, Haitao Wang, Guoquan Zhou, Zhen College of Computer and Information Engineering Heilongjiang Institute of Science and Technology Harbin China Institute of Measurement and Communication Harbin University of Science and Technology Harbin China

ISBN: (纸本)9781457703966

Improving the overall reliability and reducing the operating cost are the two most important but often conflicting objectives for substation. Condition-based substation maintenance provides a means of balancing these objectives. This paper proposes a multi-objective approach to best compromise these two objectives by optimizing the inspection frequencies required for each component. A multi-component model is employed to identify the critical components by evaluating the overall reliability of interconnected components. A Markov-chain model is developed to assess the impact of changing individual inspection frequencies on reliability and operating cost. Pareto fronts are generated to optimize the tradeoff between the two objectives for comparisons with other substation configurations. In this paper, four different substation configurations are examined to demonstrate the effectiveness and potential of the proposed approach for handling more complicated configurations. © 2011 IEEE.

关键词： Operating costs

来源：评论

学校读者我要写书评

暂无评论

Research on the broadband power line communication system based on adaptive OFDM

Research on the broadband power line communication system ba...

引用

International Conference on Consumer Electronics, communications and Networks

作者： Xuhui, Zhang Junfeng, Jia Yingjie, Zhao Jiaxin, Wei Higher Educ. Key Lab. for Measuring and Control Technology and Instrument of Heilongjiang Province Measurement-Control and Communication Institute Harbin University of Science and Technology Harbin 150080 China

ISBN: (纸本)9781612844572

There are characteristics of high noise, big attenuation, the big impedance variation and the uneven frequency response on low-voltage power line channel. Firstly, this paper proposes the combination the adaptive technology with the OFDM technology to realize the reliable and high-speed data transmission channel. It is a key to study the channel estimation of the OFDM technology and the channel allocation of the adaptive technology. Then, we put forward to the algorithm of comb-type pilots Unscented Kalman Filter, and we use the time-frequency domain estimation algorithm to improve the channel estimation accuracy. Lastly, we take the improving particle swarm algorithm to solve the problem of the channel allocation and the bit allocation, realize the sub-carrier bits and the power allocation in multiuser adaptive OFDM system, save running time, reduce the transmitted power and enhancing the efficiency of spectrum. © 2011 IEEE.

关键词： Channel estimation

来源：评论

学校读者我要写书评

暂无评论

Study of online automative detection based on the vibration signal of dual-processor

Study of online automative detection based on the vibration ...

引用

2011 2nd International Conference on Digital Manufacturing and Automation, ICDMA 2011

作者： Fang, Zhiwen Department of Communication and Control Engineering Hunan Institute of Humanities Science and Technology Loudi Hunan China

ISBN: (纸本)9780769544557

According to the harmful vibration existed in the engineering technology fields especially under the fault condition, a wide bandwidth vibration fault diagnosis system is introduced, which can obtain the acceleration, rate and displacement simultaneously. This instrument composes of dual-processor *** using its DSP core the instrument is able to analyze the vibration signals under operation, transfer the result to ARM core, then display the result by LCD, besides the addition of extensible fault diagnosis expert system. Through the simulation and experimental detection, to verify the vaLidity of the methods detecting the bandwidth vibration signal from 20Hz to 10KHz. © 2011 IEEE.

关键词： Expert systems

来源：评论

学校读者我要写书评

暂无评论

Creation and integration mechanism of instrumentation flexible developing system

引用

机械工程前沿 2011年第2期6卷 235-240页

作者： Xiaoli XU Qiushuang LIU Beijing Key Laboratory Measurement and Control of Mechanical and Electrical System Beijing Information Science & Technology University Beijing 100092 China School of Mechanical Engineering Beijing Institute of TechnologyBeijing 100081 China Beijing Key Laboratory Measurement and Control of Mechanical and Electrical System Beijing Information Science & Technology University Beijing 100092 China

To solve many key technical problems during the development of modern instrumentation system integration and provide a new mode and fundamental technical equipment for the research and development (R&D) of modern instrumentation products, based on the concept of an instrumentation flexible developing system (IFDS), this paper discusses the creation and open flexible integration mechanism, perfects the integrated supporting environment and integrated system of the flexible interconnection, and constructs the new flexible integrated system. Based on the operation mechanism of the modern instrumentation developing system and the research and optimization of the rapid integration design method, the paper emphasizes the dynamic integrating method of multiple types of knowledge in a modem instrument R&D system, to effectively utilize the rich integrated resource and achieve rapid integration of the system. Applications show that the new IFDS can improve the integration level and efficiency of R&D of the modern instrumentation system, enforce the reliability of the system, shorten the R&D period, and reduce the development costs.

关键词： modern instrumentation developing flexible interconnection flexible integration mechanism rapid integration system dynamic integrating method

来源：评论

学校读者我要写书评

暂无评论

Bit Stream Oriented Enumeration Tree Pruning Algorithm

引用

Journal of Shanghai Jiaotong university(Science) 2011年第5期16卷 567-570页

作者：邱卫东金凌杨小牛杨红娃 School of Information Security Engineering Shanghai Jiaotong University National Science and Technology on Communication Information Security Control Laboratory No. 36 Institute of China Electronics Technology Group Corporation

Packet analysis is very important in our digital life. But what protocol analyzers can do is limited because they can only process data in determined format. This paper puts forward a solution to decode raw data in an unknown format. It is certain that data can be cut into packets because there are usually characteristic bit sequences in packet headers. The key to solve the problem is how to find out those characteristic sequences. We present an efficient way of bit sequence enumeration. Both Aho-Corasick (AC) algorithm and data mining method are used to reduce the cost of the process.

关键词： pattern matching data mining frequent set frequent sequence association rule

来源：评论

学校读者我要写书评

暂无评论

A cyber security study of a SCADA energy management system: Stealthy deception attacks on the state estimator

A cyber security study of a SCADA energy management system: ...

引用

作者： Teixeira, André Dán, György Sandberg, Henrik Johansson, Karl H. School of Electrical Engineering - Automatic Control KTH Royal Institute of Technology Sweden School of Electrical Engineering - Communication Networks KTH Royal Institute of Technology Sweden

ISBN: (纸本)9783902661937

In this paper we analyze the cyber security of state estimators in supervisory control and data acquisition (SCADA) systems for energy management systems (EMS) operating the power network. Current EMS state estimation algorithms have bad data detection (BDD) schemes to detect outliers in the measurement data, based on high measurement redundancy. Although these methods can detect a set of basic cyber attacks, they may fail in the presence of an intelligent attacker. We explore the latter by considering scenarios where stealthy deception attacks are performed by sending false information to the control center. We begin by presenting a recent framework that characterizes the attack as an optimization problem with the objective specified through a security metric and constraints corresponding to the attack cost. The framework is used to conduct realistic experiments on a state-of-the-art SCADA EMS software for a power network example with 14 substations, 27 buses, and 40 branches. To the authors best knowledge, this is the first such experimental study. The results indicate how state estimators for power networks can be made more resilient to cyber security attacks. © 2011 IFAC.

关键词： Energy management systems

来源：评论

学校读者我要写书评

暂无评论

A new game algorithm for power control in cognitive radio networks

A new game algorithm for power control in cognitive radio ne...

引用

作者： Li, Feng Tan, Xuezhi Wang, Li School of Electronics Information Engineering Harbin Institute of Technology Harbin 150080 China Department of Automation Measurement and Control Harbin Institute of Technology Harbin 150080 China

Based on the analysis of the feature of cognitive radio (CR) networks, we build a relevant interference model. Cognitive users should particularly consider the problem of interference with licensed users and satisfy the signal-to-interferenceplus-noise ratio (SINR) requirement at the same time. We propose a new iterative algorithm using the game theory in this paper. We consider not only the SINR requirement as other game algorithms but also the influence of power threshold. The variable power limit is the characteristic of CR. We prove the convergence of the algorithm and the existence of Nash equilibrium. According to different power thresholds, we give an approach for solving the problem of coexistence between licensed user and cognitive user in a cognitive system. The algorithm has the advantage that it can be distributively implemented, and the method converges relatively fast. Numerical results are presented to show that the proposed approach has better antinoise effect and capacity. © 2011 IEEE.

关键词： Cognitive radio

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：