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Efficient target detection algorithm on the basis of SMC

Guofang Keji Daxue Xuebao/Journal of National University of Defense Technology 2007年第2期29卷 65-69页

作者： Li, Gan-Hua Dong, Li Cai, Xuan-Ping Zhou, Dong-Xiang Liu, Yun-Hui College of Electronic Science and Engineering National Univ. of Defense Technology Changsha 410073 China Xi'an Satellite Control Center Xi'an 710043 China Dept. of Automation and Computer Aided Engineering Chinese University of Hong Kong Hong Kong Hong Kong

An efficient target detection algorithm for infrared sequence image with sea-sky background is presented. For the big none-Gaussian noises and the none-linear movement of the target, the algorithm is established mainly on the basis of the sequential Monte Carlo (SMC) method. The algorithm uses the statistic values of the target's feature image to change the weight of the particles which are produced by Monte Carlo sampling, and the target is detected and tracked based on the control of these weights. The difference image is used as the feature image. The experimental results demonstrate the effectiveness and real-time efficient of the algorithm.

关键词： Decrease noise Sequential infrared image SMC Target detection

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Delta Domain Design of Low-Cost Fuzzy controlled Servosystems

Delta Domain Design of Low-Cost Fuzzy Controlled Servosystem...

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IEEE International Symposium on Intelligent Signal Processing

作者： Radu-Emil Precup Zsuzsa Preitl Emil M. Petriu Dept.of Automation and Applied Informatics “Politehnica” University of Timisoara Timisoara Romania Dept. of Control and Transport Automation Budapest University of Technology and Economics Budapest Hungary School of Information Technology and Engineering University of Ottawa Ottawa ON Canada

ISBN: (纸本)1424408296;97

The paper presents a new design method for low-cost fuzzy control systems used in mechatronics, characterized by second-order dynamics of integral type, controlled by two-degree-of-freedom Pi-fuzzy controllers. The method, referred to as delta domain design, consists of three design steps based on continuous-time linear case design results expressed in terms of the Extended Symmetrical Optimum method applied in the delta domain, followed by the transfer of these results to the fuzzy case. The new design method and Mamdani Pi-fuzzy controllers are validated by real-time experiments in controlling a nonlinear servosystem.

关键词： Fuzzy control Servosystems control systems Design methodology Cascading style sheets Sampling methods Automatic control Design automation Mechatronics Vehicle dynamics

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NONLINEAR NETWORK STRUCTURES FOR FEEDBACK control

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Asian Journal of control 2008年第4期1卷

作者： F.L. Lewis Dept. of Electical Engineering The University of Texas at Arlington U.S.A. F. L. Lewis was born in Wärzburg. Germany subsequently studyning in Chile and Goruonstoun School in Scotland. He obtained the Bachelor's Degree in Physics/Electrical Engineering and the Master's of Electrical Engineering Degree at Rice University in 1971. He spent six years in the U.S. navy serving as Navigator aboard the frigate USS Trippe (FF-1075) and Executive Officer and Acting Commanding Officer aboard USS Salinan (ATF-161). In 1977 he received the Master's of Science in Aeronautical Engineering from the University of West Florida. In 1981 he obtained the Ph.D. degree at The Georgia Institute of Technology in Atlanta where he was employed as a professor from 1981 to 1990 and is currently an Adjunct Professor. He is a Professor of Electrical Engineering at The University of Texas at Arlington where he was awarded the Moncrief-O'Donnell Endowed Chair in 1990 at the Automation and Robotics Research Institute. Dr. Lewis has studied the geometric analytic and structural properties of dynamical systems and feedback control automation. His current interests include robotics intelligent control neural and fuzzy systes nonlinear systems and manufacturing process control. He is the author/co-author of 2 U.S. patents 124 journal papers 20 chapters and encyclopedia articles 210 refereed conference papers seven books: Optimal Control Optimal Estimation Applied Optimal Control and Estimation Aircraft Control and Simulation Control of Robot Manipulators Neural Network Control High-Level Feedback Control with Neural Networks and the IEEE reprint volume Robot Control. Dr. Lewis is a registered Professional Engineer in the State of Texas and was selected to the Editorial Boards of International Journal of Control Neural Computing and Applications and Int. J. Intelligent Control Systems. He is the recipient of an NSF Research Initiation Grant and has been continuously funded by NSF since 1982. Since 1991 he has received $1.8 m

A framework is given for controller design using Nonlinear Network Structures, which include both neural networks and fuzzy logic systems. These structures possess a universal approximation property that allows them to be used in feedback control of unknown systems without requirements for linearity in the system parameters or finding a regression matrix. Nonlinear nets can be linear or nonlinear in the tunable weight parameters. In the latter case weight tuning algorithms are not straightforward to obtain. Feedback control topologies and weight tuning algorithms are given here that guarantee closed-loop stability and bounded weights. Extensions are discussed to force control, backstepping control, and output feedback control, where dynamic nonlinear nets are required.

关键词： Intelligent feedback control neural networks neural network structures basis function networks fuzzy control fuzzy-neural networks universal approximation adaptive nonparametric control learning control systems

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Methods of data processing in multi-wavelength thermometry

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Journal of Harbin Institute of Technology(New Series) 2006年第4期13卷 421-426页

作者：孙晓刚赵巍原桂彬戴景民 Dept. of Automation Measurement &Control Harbin Institute of Technology Dept. of Automation Control Harbin Engineering University

Three kinds of methods for processing the data of the multi-wavelength pyrometer are presented in this paper and are named curve auto-search method, curve auto-regression method and neural network method. Tbe experimental results indicate that the calculated temperature and the spectral emissivity compared with the true target temperature and spectral emissivity have significant deviation using the curve auto-search and the curve auto-regression methods. However, the calculated temperature and the spectral emissivity with higher accuracy can be obtained using the neural network method.

关键词： multi-wavelengtb thermometry curve auto-search method curve auto-regression method neural network

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Scheduling a three-machine no-wait flowshop with separated setup time

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Journal of Harbin Institute of Technology(New Series) 2006年第2期13卷 206-210页

作者：常俊林邵惠鹤 Dept. of Automation Shanghai Jiaotong University Shanghai 200030 ChinaDept. of Control Science and Engineering Harbin Institute of Technology Harbin 150001 China Dept. of Control Science and Engineering Harbin Institute of Technology Harbin 150001 China

In many practical flowshop production environments, there is no intermediate storage space available to keep partially completed jobs between any two machines. The workflow has to be continuous, implying that the no-wait conditions must be abided, which is typical in steel and plastic production. We discuss the three-machine no-wait flowshop scheduling problem where the setup times are considered as separated from processing times and sequence independent. The scheduling goal is to minimize the total flowtime. An optimal property and two heuristic algorithms for this problem are proposed. Evaluated over a large number of problems, the proposed heuristics are found that they can yield good solutions effectively with low computational complexity, and have more obvious advantage for the large size problem compared with the existing one.

关键词： three-machine flowshop setup time no-wait total flow time

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Hybrid fuzzy neural network control for complex industrial process

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作者： Yang, Qingyu Ju, Lincang Ge, Sibo Shi, Ren Cai, Yuanli Dept. of Automation Xi'an Jiaotong University 710049 Xi'an China Dept. of Power and Control Engineering Xi'an Jiaotong University 710049 Xi'an China

ISBN: (纸本)3540372555

Fire exchange must be done for the large scale glass furnace in order to assure combustion equality. However, disturbance during fire exchange breaks the stability of temperature and pressure in furnace, and the automatic control precision is decreased greatly. A hybrid fuzzy neural network controller is employed to suppress these fluctuations in this paper. The algorithm and structure of hybrid FNNC are described in detail. During fire exchange, the optimal control coefficients are obtained using FNNC, at the same time the typical PID controller is closed. After fire exchange, the fuel and press output decrease or increase gradually according to these coefficients. The hybrid FNNC has already been implemented successfully. The results show that the hybrid FNNC algorithm improved the performance of automatic control greatly. © Springer-Verlag Berlin/Heidelberg 2006.

关键词： Fires

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Fault diagnosis of networked control systems

Fault diagnosis of networked control systems

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作者： Fang, Huajing Ye, Hao Zhong, Maiying Dept. of Control Science and Engineering Huazhong University of Science and Technology Wuhan 430074 China Dept. of Automation Tsinghua University Beijing 100084 China School of Control Science and Engineering Shandong University Jinan 250061 China

ISBN: (纸本)9783902661142

Networked control systems (NCS) are systems with at least one loop closed through data networks. NCS have many advantages compared with traditional systems, however the network-induced delay and other peculiarities of communication channel will degrade the performance of closed-loop systems. Supported by National Nature Science Foundation of China, we studied the fault diagnosis and fault-tolerant control theory for NCS in recent years. This plenary talk will summarize the main ideas and results on fault diagnosis of NCS, including fault detection for NCS with information scheduling, for NCS with network induced time delay and for NCS with random time delay based on quasi Takagi-Sugeno fuzzy models. Copyright © 2006 IFAC.

关键词： Networked control systems

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State-of-the-art 3D graphics for embedded systems

State-of-the-art 3D graphics for embedded systems

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6th International Caribbean Conference on Devices, Circuits and Systems, ICCDCS 2006

作者： Möller, Reinhard Dept. of Electrical Information Media Engineering Automation and Process Control Engineering University of Wuppertal Rainer-Gruenter-Str. 21 42349 Wuppertal Germany

ISBN: (纸本)1424400422

The early days of 3D graphics computing were marked by extremely expensive and highly sophisticated hardware and software. Terms like ubiquitous computing and 3D on handhelds were unthinkable. But the development of obliging common standards like OpenGL, for example, together with rapidly improving graphics technology turned the coin, and now everybody demands for high-performance user interfaces on his everyday-computing environment. Game development industry focuses on mobile technology. Automotive engineering introduces multimodal interfaces and entertainment systems for next generation cars. Although all industrial sectors ask for high performance graphics, they often focus on different aspects due to the still existing limitations of their graphics devices. This leads to a demand to revise and also optimize the graphics standards in order to make them suitable for special embedded and small-scale devices. This paper will present the state of development of OpenGL-ES, a 3D-standard for embedded graphics, its difference to regular OpenGL and its benefit for small-footprint interactive systems. Special aspects of safety-critical devices in avionics and military applications will be discussed. Actual applications and research will be referenced. © 2006 IEEE.

关键词： Embedded systems

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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...

引用

6th World Congress on Intelligent control and automation, WCICA 2006

作者： Wenfu, Xu Bin, Liang Wenyi, Qiang Panfeng, Huang Yangsheng, Xu Dept. of Control Science and Engineering Harbin Institute of Technology Harbin 150001 China College of Astronautics Northwestern Polytechnical University Xi'An China Dept. of Automation and Computer-Aided Engineering Chinese University of Hong Kong Hong Kong Hong Kong

ISBN: (纸本)1424403324

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. © 2006 IEEE.

关键词： Mobile robots

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Structural dynamic characteristics modification via Surface Grooving Technique : Modified algorithm and its result

Structural dynamic characteristics modification via Surface ...

引用

24th Conference and Exposition on Structural Dynamics 2006, IMAC-XXIV

作者： Park, Mi-You Park, Youn-Sik Han, Sang Bo Center for Noise and Vibration Control Dept. of Mech. Eng. KAIST Daejeon Korea Republic of School of Mechanical Engineering and Automation KyungNam University Korea Republic of

ISBN: (纸本)0912053941

Changing shape of structure has been mostly relied on engineer's experience and time consuming trial-and-error process. In order to develop a systematic method to change structure shape, surface grooving technique has been developed. In this work, the shape of base structure is modified to improve its dynamic characteristics such as natural frequencies via surface grooving technique. Grooving shape is formed by merging the neighboring small embossed elements after analyzing frequency increment sensitivities of all the surrounding emboss elements. As a result of Surface Grooving Technique, optimum grooving shape was automatically obtained. In this technique, the initial grooving position starts from the element having highest modal strain energy then it expands into neighboring elements. The range of grooving area for checking its frequency sensitivities is restricted to their surrounding elements to reduce its computation effort. For the more computationally effective method, the algorithm was modified. Omitting the elements which have low-valued modal strain energy among neighboring elements, target domain can be reduced and computational efficiency is improved. To check the efficiency of modified algorithm, the developed algorithm was tested with hard disk drive (HDD) cover to raise its natural frequency by giving some groove on its surface. To verify the result of simulation, another simulation was carried out to the HDD cover fine FEmodel.

关键词： Computational efficiency

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