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作者： Icev, Z.A. Stankovski, M.J. Kolemishevska, T.D. Zhao, J. Dimirovski, G.M. SS Cyril and Methodius University Faculty of Electrical Engineering ASE Institute P.O.B. 574 MK-1000 Skopje Macedonia Northeastern University College of Information Science and Engineering Institute of Control Theory Shenyang Liaoning 110004 China Dogus University Faculty of Engineering Computer Engineering Department Acibadem Zeamet Sk. 21 Kadikoy TR-34722 Istanbul Turkey

ISBN: (纸本)9783902661197

A design of fuzzy model-based predictive control for industrial furnaces has been derived and applied to the model of three-zone 25 MW RZS pusher furnace at Skopje Steelworks. The fuzzy-neural variant of Takagi-Sugeno fuzzy model, as an adaptive neuro-fuzzy implementation, is employed as a predictor in a predictive controller. In order to build the predictive controller the adaptation of the fuzzy model using dynamic process information is carried out. Optimization procedure employing a simplified gradient technique is used to calculate predictions of the future control actions. Copyright © 2006 IFAC.

关键词： Optimization

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A Bio-inspired computer Fovea Model based on Hexagonal-type Cellular Neural Networks

A Bio-inspired Computer Fovea Model based on Hexagonal-type ...

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International Joint Conference on Neural Networks (IJCNN)

作者： C.-H. Huang H. Koeppl C.-T. Lin Department of Electrical and Control Engineering National Chiao Tung University Taiwan Erwin Schrödinger postdoctoral fellow at the DepartmentElectrical Engineering and Computer Sciences University of California Berkeley USA College of Computer Science Dean DepartmentComputer Science National Chiao Tung University Taiwan

In this work we propose a novel computer fovea model based on hexagonal-type cellular neural networks (hCNN). The hCNN represents a new image processing architecture that is motivated by the overwhelming evidence for hexagonal image processing in biological systems. The necessary new coupling templates and basic hCNN image operators are introduced. The fovea model includes the biological mechanisms of the photoreceptors, the horizontal cells, the ganglions, the bipolar cells, and their cooperation. Thus the model describes the signal processing from the optical stimulation at retina to the output of the ganglion cells. Different building blocks of the model turned out to be useful for practical image enhancement algorithms. Two such applications are considered in this work, namely the image sharpness improvement and the color constancy algorithm.

关键词： computer networks Cellular neural networks Biological system modeling Signal processing algorithms Biology computing Image processing Cells (biology) Optical signal processing computer architecture Biological systems

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Gerschgorin Theorem and its Applications in control System Problems

Gerschgorin Theorem and its Applications in Control System P...

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IEEE International Conference on Industrial Technology (ICIT)

作者： Yogesh V. Hote D. Roy Choudhury J.R.P. Gupta Lecturer Instrumentation and Control Dept Netaji Subhas Institute of Technology New Delhi India Computer Science and Engineering Delhi College of Engineering New Delhi India NSIT New Delhi India

In this paper, we have presented application of Gerschgorin theorem in relative stability analysis of a system represented by a polynomial. We have also presented the applications of Gerschgorin Theorem in reduced ord... 详细信息

关键词： control systems Eigenvalues and eigenfunctions Application software Stability analysis Stability criteria computer science Polynomials Time invariant systems Symmetric matrices Partitioning algorithms

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Chaotic image scrambling algorithm based on S-DES

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Journal of Physics: Conference Series 2006年第1期48卷 349-353页

作者： Yu, X.Y. Zhang, J. Ren, H.E. Xu, G.S. Luo, X.Y. College of Measurement-Control Tech. and Communications Engineering Harbin University of Science and Technology Harbin 150080 China Information and Computer Engineering College Northeast Forestry University Harbin 150000 China

With the security requirement improvement of the image on the network, some typical image encryption methods can't meet the demands of encryption, such as Arnold cat map and Hilbert transformation. S-DES system can encrypt the input binary flow of image, but the fixed system structure and few keys will still bring some risks. However, the sensitivity of initial value that Logistic chaotic map can be well applied to the system of S-DES, which makes S-DES have larger random and key quantities. A dual image encryption algorithm based on S-DES and Logistic map is proposed. Through Matlab simulation experiments, the key quantities will attain 10¹⁷ and the encryption speed of one image doesn't exceed one second. Compared to traditional methods, it has some merits such as easy to understand, rapid encryption speed, large keys and sensitivity to initial value. © 2006 IOP Publishing Ltd.

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A new measurement method of iimage encryption

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Journal of Physics: Conference Series 2006年第1期48卷 408-411页

作者： Yu, X.Y. Zhang, J. Ren, H.E. Li, S. Zhang, X.D. College of Measurement-Control Tech. and Communications Engineering Harbin University of Science and Technology Harbin 150080 China Information and Computer Engineering College Northeast Forestry University Harbin 150000 China

Image scrambling transformation is applied widely in the digital watermarking and image encryption. Although more and more scrambling algorithms appear, they lack a method to evaluate the image scrambling degree. According to the relative differences of a point and adjacent point in scrambling front and back, a new method which judges the scrambling degree is proposed. Not only it can evaluate the change of each pixel's position, but also evaluate the change of adjacent pixel's value. Apply Matlab to the simulation experiment, the result indicated that this method can evaluate image scrambling degree well, and it accorded with people's vision too. © 2006 IOP Publishing Ltd.

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Configuration control of Space Robots for Impact Minimization

Configuration Control of Space Robots for Impact Minimizatio...

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IEEE International Conference on Robotics and Biomimetics

作者： Panfeng Huang Wenfu Xu Bin Liang Yangsheng Xu College of Astronautics Northwestern Polytechnical University Xi'an China Department of Control Science and Engineering Harbin Institute of Technology China Department of Automation and Computer-Aided Engineering Chinese University of Hong Kong Hong Kong China

On-orbital services of space robot are playing more and more important roles in the space operation. Nearly all space operation can not possibly avoid to contact the target. The contact and impact do not possibly avoid when the space robot captures the object. The impulse caused by impact is bad to the space robot and object. This paper derives the impact dynamic equations according to the dynamic model of space robot system and the object. We propose a genetic algorithm (GA) based on approach to search the optimal configuration of space robot at capturing moment in order to minimize or avoid the impact. An illustrative example has verified that the proposed method has satisfactory performance and real significance for reducing the impact.

关键词： Robot control Orbital robotics Robot kinematics Aerodynamics Space technology Manipulator dynamics Robotics and automation Equations Trajectory Genetic algorithms

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A Fast Inter Mode Selection Algorithm for H.264

A Fast Inter Mode Selection Algorithm for H.264

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International Conference on Pervasive Computing and Applications (ICPCA)

作者： Yun Cheng Silian Xie Jianjun Guo Zhiying Wang Minlian Xiao College of Computer National University of Defense Technology Changsha China Department of Communication and Control Engineering Science and Technology Hunan Institute of Humanities Loudi China Department of Computing Hunan Institute of Humanities Science and Technology Loudi China

The high encoding efficiency of H.264 comes from many new video encoding technologies such as adopting variable block size in the process of motion estimation and compensation. But this increases the complexity of H.264 encoder greatly. The high encoding complexity limits the application of H.264 in the domain of real time video encoding. In order to decrease the complexity of H.264 encoder greatly, this paper proposes a fast inter mode selection algorithm to speed up the H.264 encoder. Experimental results show that the proposed algorithm can reduce the complexity of the inter mode decision remarkably while incurring little, if any, loss in quality

关键词： Encoding Motion estimation MPEG 4 Standard Video compression Pervasive computing Decoding Testing High definition video HDTV Video coding

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Trajectory Planning of Space Robot System for Target Berthing and Reorientation after Capturing

Trajectory Planning of Space Robot System for Target Berthin...

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World Congress on Intelligent control and Automation (WCICA)

作者： Wenfu Xu Bin Liang Wenyi Qiang Panfeng Huang Yangsheng Xu Department of Control Science and Engineering Harbin Institute of Technology Harbin China College of Astronautics Northwestern Polytechnical University Xi'an China Department of Automation and Computer Aided Engineering Chinese University of Hong Kong Hong Kong China

A typical servicing operation in space mainly includes three phases: capturing the target, berthing and docking the target, and repairing the target. The attitude of a satellite usually changes after the capturing, because the control system is turned off during this phase for safety reasons. In this paper, a method is proposed to achieve the berthing of the target and reorientating the satellite attitude at the same time, both by involving manipulator motion only. Firstly, the constraints on the manipulator and the objective function are defined according to the planning problem. Then the joint trajectory is parameterized by sinusoidal function, whose argument is the polynomial. Finally, genetic algorithm is used to search for the global optimal resolution of the parameters. When the parameters are found, each joint trajectory can be determined. This planned trajectory is smooth and more applicable for the control of the free-floating robotic system. Our proposed method is verified by simulation

关键词： Trajectory Orbital robotics Space technology Satellites Space vehicles Path planning Robotics and automation Attitude control control systems Genetic algorithms

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Approach to termination decision for a rule set based on activation path and conditional formula

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Jisuanji Yanjiu yu Fazhan/computer Research and Development 2006年第5期43卷 901-907页

作者： Xiong, Zhongmin Hao, Zhongxiao College of Computer Science and Technology Harbin University of Science and Technology Harbin 150080 China College of Computer Science and Technology Harbin Institute of Technology Harbin 150001 China College of Computer and Control Engineering Qiqihar University Qiqihar 161006 China

Supporting active rules has become an important characteristic of modern database systems. Active rules termination is an important problem of active database. To prove termination by using triggering and activation graphs has conservativeness. In order to refine the existing works, the formula constructed for an effective activation path is proposed and an approach about how to determine the termination of active rules set is presented. The analytical results prove that the proposed approach can detect more termination situations than any other existing works. Moveover, an algorithm for termination decision is provided, and its correctness and termination are proved.

关键词： Database systems

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On the design and control of wireless networked embedded systems

On the design and control of wireless networked embedded sys...

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IEEE International Conference on computer-Aided Design

作者： Karl-Erik Arzen Antonio Bicchi Stephen Hailes Karl H. Johansson John Lygeros Department of Automatic Control Lund University Sweden Centro E. Piaggio University of Pisa Italy Department of Computer Science University College London UK School of Electrical Engineering Royal Institute of Technology Stockholm Sweden Department of Electrical and Computer Engineering University of Patras Greece

Wireless networked embedded systems are becoming increasingly important in a wide area of technical fields. In this tutorial paper we present recent results on the design of these systems and their use in control applications, that have been developed within the project Reconfigurable Ubiquitous Networked Embedded Systems (RUNES). RUNES is a European Integrated Project with the aim to control complexity in networked embedded systems by developing robust and scalable middleware systems. New components for control under varying network conditions are discussed for the RUNES architecture. The paper highlights how the complexity of the closed-loop system is increased, due to additional disturbances introduced by the communication system: additional delays, jitter, data rate limitations, packet losses, etc. Experimental work on integration test beds that demonstrates these results is presented, together with motivating links to the RUNES disaster relief tunnel scenario

关键词： control systems Embedded system Communication system control Fires Networked control systems Testing Middleware Added delay Jitter Mobile robots

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