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8th IFAC Conference on Fieldbuses and Networks in Industrial and Embedded systems, FeT 2009

作者： Li, Xiao Hui Xu, Hong Qin Hong, Seung Ho Wang, Zhi Piao, Xiang Fan Engineering Research Center of Metallurgical Automation and Measurement Technology Ministry of Education Wuhan University of Science and Technology Wuhan Hubei430081 China State Key Laboratory of Industrial Control Technology Zhejiang University Hangzhou310027 China Department of Electronics Information and System Engineering Hanyang University 425-791 Korea Republic of Department of Electronic Information Engineering College of Science and Engineering Yanbian University Yanji133002 China

ISBN: (纸本)9781617825583

Home automation systems based on wireless sensor/actuator networks are characterized by diversity of node power sources, limited computational power, and mobility. We propose a routing protocol that fully uses the location of static nodes to limit the search for a route to a small zone based on the analysis of characteristics and requirements. The calculation of two different kinds of zone and the route discovery procedure are described in this paper. According to the environment of home automation, we compared the performance of our routing protocols with the ad-hoc on-demand distance-vector protocol using simulation and gave suggestions for zone selection. Simulation results showed that our routing protocol dramatically reduced the routing overhead and increased the reliability.

关键词： Routing protocols

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Approach of Moving Objects Detection in Active Video Surveillance

Approach of Moving Objects Detection in Active Video Surveil...

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Joint 48th IEEE Conference on Decision and control and 28th Chinese control Conference

作者： CHI Jian-nan ZHANG Chuang ZHANG Han LIU Yang YAN Yan-tao the School of Information Engineering University of Science and Technology Beijing Key Laboratory of Advanced Control of Iron and Steel Process (Ministry of Education) University of Science and Technology Beijing the University of Science and Technology Beijing

Image multi-scale edge detection based on antisymmetrical biorthogonal wavelet is given detailedly in theory, Especially an algorithm of wavelet decomposition in which multi-scale edge can be detected is put forward. Based on above using different kinds of wavelet decomposition data such as approximate coefficients and multi-scale edge image, a moving object detection approach in active video surveillance system is proposed. Firstly Block Matching is used to calculate motion vector in low frequency image of wavelet decomposition. Then Motion Compensation and Frame Difference between two adjacent frames applied to extract moving object information. And using multi-scale edge image of wavelet Region Growth is combined with Hough Transformation to define region of potential object. Finally object is farther segmented in object potential region. Experimental results indicate that the method presented in the paper is effective.

关键词： Object image Approach of Moving Objects Detection in Active Video Surveillance Hough Active

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Iterative learning control for processes with uncertain time delay using minimum entropy

Iterative learning control for processes with uncertain time...

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Asian control Conference

作者： Junghui Chen Chu Chih-Chiang Jose Munoz Jianhua Zhang Department of Chemical Engineering Chung Yuan Christian University Chungli Taiwan Beijing Key Laboratory of Industrial Process Measurement & Control New Technology and System North China Electric Power University Beijing China

ISBN: (纸本)9781424454402

In most batch processes, quality control measurements cannot be completed before the next batch operation. Thus, the corrective step is often delayed by one batch or more. The uncertain duration of delay with stochastic characteristics can be treated as a random variable of unknown distribution. Coupled with inaccurate process models, the delay may lead to significant process output variations even with EWMA controllers. This paper proposes a new method of handling the uncertain metrology delay and its ensuing complications. The run-to-run controller is designed based on minimization of error entropy, and the probability density function of the tracking error can be estimated by the historical operation data. The simulation example demonstrates the effectiveness of the proposed method.

关键词： process control Delay effects Entropy Metrology control systems Error correction Stochastic processes Probability density function Industrial control Robust control

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Study of Direction Probability and Algorithm of Improved Marriage in Honey Bees Optimization for Weapon Network system

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Defence Technology（防务技术） 2009年第2期5卷 152-157页

作者：杨晨光涂序彦陈杰 Systems Engineering Research Institute China State Shipbuilding Corporation Department of Automation School of Information Science and Technology Beijing Institute of Technology Ministry of Education of Key Laboratory of Complex System Intelligent Control and Decision Beijing Institute of Technology

To solve the weapon network system optimization problem against small raid objects with low attitude,the concept of direction probability and a new evaluation index system are *** calculating the whole damaging probability that changes with the defending angle,the efficiency of the whole weapon network system can be subtly *** such method,we can avoid the inconformity of the description obtained from the traditional index *** new indexes are also proposed,*** index,overlap index and cover index,which help manage the relationship among several *** normalizing the computation results with the Sigmoid function,the matching problem between the optimization algorithm and indexes is well ***,the algorithm of improved marriage in honey bees optimization that proposed in our previous work is applied to optimize the embattlement *** is carried out to show the efficiency of the proposed indexes and the optimization algorithm.

关键词：网络系统优化问题破坏概率算法改进核武器蜜蜂婚姻 Sigmoid函数

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Color Image Retrieval and Classification Using Fuzzy Similarity Measure and Fuzzy Clustering Method

Color Image Retrieval and Classification Using Fuzzy Similar...

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Joint 48th IEEE Conference on Decision and control and 28th Chinese control Conference

作者： Xiaojuan Ban Xiaolong Lv Jie Chen School of Information Engineering University of Science and Technology Beijing Key Laboratory for Advanced Control of Iron and Steel Process (Ministry of Education) University of Science and Technology Beijing School of Automatization Beijing Institute of Technology

Color image retrieval and classification are very important in the field of image *** this paper, we propose a method which is in token of color characteristic of one image using hue and thereby is used to calculate similarity between two *** also take *** to find the best threshold so that we can realize fuzzy partition, and finally fuzzy c-means algorithm is used to do image classification and the calculation of subjection degree of one picture in the corresponding *** corresponding mathematical model is ***, we construct a frame in which image comparability is obtained through fuzzy similarity measure based on hue feature vector of image, thus image retrieval is finished, and image classification is realized by fuzzy *** comparison of image retrieval result between RGB feature vector and only-hue feature vector in token of image characteristic is *** experiment shows that the idea which takes this fuzzy similarity measure and fuzzy clustering method as the scheme of image retrieval and classification is reasonable and effective.

关键词： image retrieval image classification fuzzy similarity measure fuzzy clustering

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Calculating Minimum Buffer Requirement of Constant Rate Transmission Scheme Based on SVM

Calculating Minimum Buffer Requirement of Constant Rate Tran...

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International Conference on Computer and information Technology (CIT)

作者： Zilei Wang Hongsheng Xi Guo Wei Key Laboratory of Network Communication System and Control Chinese Academy of Sciences University of Science and Technology Hefei Anhui China Department of Electronic Engineering and Information Science USTC Hefei Anhui China

Constant rate transmission and transport (CRTT) is an effective bandwidth smoothing scheme resulting in one fixed rate during the whole duration of variable bit-rate video, which, however, needs a large client buffer size. The minimum buffer requirement (MBR) of CRTT, besides benefiting the design of some piecewise transmission scheme, can examine whether we can transmit the requested video with a constant rate for a given buffer size. In this paper, we formulate off-line bandwidth smoothing into a binary classification problem of the underflow and overflow points. Then we propose a novel algorithm based on support vector machine because of its equal margin, which,we have proven, is able to minimize the required buffer size of CRTT. Our algorithm, therefore, can exactly calculate MBR together with the CRTT transmission rate without exhaustively searching buffer sizes and startup delay. The simulation results using some real MPEG4 and H.264 video show the philosophy and effectiveness of our algorithm.

关键词： Support vector machines Smoothing methods Bandwidth Support vector machine classification Streaming media Video compression Computer networks Delay MPEG 4 Standard Buffer storage

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Vulnerability assessment for communication network of Substation Automation systems to cyber attack

Vulnerability assessment for communication network of Substa...

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IEEE PES Power systems Conference and Exposition, PSCE

作者： Nian Liu Jianhua Zhang Hao Zhang Wenxia Liu Key Laboratory of Power System Protection and Dynamic Security Monitoring and Control Under Ministry of Education North China Electric Power University Beijing China Automation and information security North China Electric Power University China

The Substation Automation system (SAS) is a crucial element of power system control. The devices of SAS with remote-control functions are one of the main target of cyber attack. The vulnerability assessment for communication network of SASs that supporting the analysis of control process, is an unsolved problem. Combined with the characteristics of SAS and the vulnerability assessment of the distributed systems, a vulnerability assessment method for communication nework of SASs to cyber attack is proposed. The substation communication system has been classified into six basic models used to construct vulnerability state graph (VSG). The vulnerability of single action is defined based on exponential distribution function including parameters called vulnerability factor and equivalent attacking cost, and then the vulnerability value of target systems are calculated by four connection types of VSG. Furthermore, a vulnerability factor quantity method based on AHP-TOPSIS is designed. An evaluation instance is constructed from IEC 61850 standard, the proposed method is applicable to evaluate the vulnerability of communication network of SASs.

关键词： Communication networks Substation automation Synthetic aperture sonar IEC standards Power system control Automatic control process control Communication system control Exponential distribution Cost function

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Routing Protocol for Wireless Sensor Networks in Home Automation

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IFAC Proceedings Volumes 2009年第3期42卷 27-33页

作者： Xiao Hui Li Hong Qin Xu Seung Ho Hong Zhi Wang Xiang Fan Piao Engineering Research Center of Metallurgical Automation and Measurement Technology Ministry of Education Wuhan University of Science and Technology Wuhan Hubei 430081 China State Key Laboratory of Industrial Control Technology Zhejiang University Hangzhou 310027 China Department of Electronics Information and System Engineering Hanyang University 425-791 Korea Department of Electronic Information Engineering College of Science and Engineering Yanbian University Yanji 133002 China

关键词： Wireless Sensor/Actuator Networks Home Automation Routing Protocol

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Variable structure controller based on extended state observer in gun turret system

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Beijing Ligong Daxue Xuebao/Transaction of Beijing Institute of Technology 2009年第4期29卷 318-322页

作者： Chen, Jie Jin, Tian-Xu Bai, Yong-Qiang Department of Automatic Control School of Information and Science Beijing Institute of Technology Beijing 100081 China Key Laboratory of Complex System Intelligent Control and Decision of Ministry of Education Beijing Institute of Technology Beijing 100081 China

Considering the characteristics of the servo system, such as disturbance, nonlinearity and high inertia, variable structure controller (VSC) based on extended state observers (ESO) are designed for the aim of quick, stable and high-accuracy controlling processes. The disturbances and high-order factors are estimated and compensated using ESO. Dynamic compensation reduces the motion system to approximately a triple integrator which can be easily controlled using VSC. Because ESO provides a high-frequency path for the dynamic state not modelled, the chatter of VSC is reduced. Through tests in the gun turret system, it was shown that this controller is superior to the engineering PID and general VSC.

关键词： Variable structure control

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Blind source separation algorithm for communication complex signals in communication reconnaissance

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Frontiers of Electrical and Electronic Engineering in China 2008年第3期3卷 338-342页

作者： Weihong FU Xiaoniu YANG Nai’an LIU Xingwen ZENG State Key Laboratory of Integrated Service Networks Xidian UniveristyXi’an 710071China National Laboratory of Information Control Technology for Communication System Jiangnan Electronic Communications Research InstituteJiaxing 314033China

Most blind source separation algorithms are only applicable to real signals,while in communication reconnaissance processed signals are *** solve this problem,a blind source separation algorithm for communication complex signals is deduced,which is obtained by adopting the Kullback-Leibler divergence to measure the signals’*** the other hand,the performance of natural gradient is better than that of stochastic gradient,thus the natural gradient of the cost function is used to optimize the *** to the conclusion that the signal’s mixing matrix after whitening is orthogonal,we deduce the iterative algorithm by constraining the separating matrix to an orthogonal *** results show that this algorithm can efficiently separate the source signals even in noise circumstances.

关键词： communication reconnaissance blind source separation complex signal

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