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Stability of Hybrid Impulsive systems With Time Delays and Stochastic Effects

IFAC Proceedings Volumes 2008年第2期41卷 5933-5938页

作者： Zhichun Yang Yiguang Hong Key Laboratory of Systems and Control Institute of Systems Science Chinese Academy of Sciences Beijing 100080 China Chongqing Key Lab of Operations Research and System Engineering Department of Mathematics and Computer Science Chongqing Normal University Chongqing 400047 China

In this paper, a class of hybrid impulsive systems with time delays and stochastic effects are considered. We obtain some criteria on the global exponential stability in mean square for the impulsive stochastic delayed systems. To do this, differential inequalities and ℒ-operator inequalities are developed. An example is given to illustrate the effectiveness of our results.

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Detection of hazardous driving behavior using fuzzy logic

Detection of hazardous driving behavior using fuzzy logic

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International Conference on Electrical engineering/Electronics, computer, Telecommunications and Information Technology, ECTI-CON

作者： T. Imkamon P. Saensom P. Tangamchit P. Pongpaibool Department of Control System and Instrumentation Engineering King Mongkut's University of Technology Thailand Network Technology Laboratory National Electronics and Computer Technology Center Klong Luang Pathum Thani Thailand

We propose a system that can record driving events and detect unsafe driving behaviors. Three sensors, an engine control unit (ECU) reader, a 3-axis accelerometer, and a camera are used, in which they represent the car, the passenger, and the driverpsilas perspective. Our system combines data from these three sensors with a fuzzy inference system to identify an event of hazardous driving. The output of the system is the driving risk level ranging from 1 to 3, where 1 is the safest. The output of the system was verified by comparison with a questionnaire from three passengers in a test run experiment.

关键词： Cameras Accelerometers Acceleration Vehicles Driver circuits Roads Sensors

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On capture power-aware test data compression for scan-based testing 08

On capture power-aware test data compression for scan-based ...

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IEEE International Conference on computer-Aided Design

作者： Jia Li Xiao Liu Yubin Zhang Yu Hu Xiaowei Li Qiang Xu Chinese Academy and Sciences Beijing China CUhk REliable computing laboratory (CURE) Department of Computer Science & Engineering Chinese University of Hong Kong New Territories Hong Kong China Key Laboratory of Computer System and Architecture ICT CAS Beijing China

ISBN: (纸本)9781424428205

Large test data volume and high test power are two of the major concerns for the industry when testing large integrated circuits. With given test cubes in scan-based testing, the ldquodonpsilat-carerdquo bits can be exploited for test data compression and/or test power reduction. Prior work either targets only one of these two issues or considers to reduce test data volume and scan shift power together. In this paper, we propose a novel capture power-aware test compression scheme that is able to keep scan capture power under a safe limit with little loss in test compression ratio. Experimental results on benchmark circuits demonstrate the efficacy of the proposed approach.

关键词： Test data compression Circuit testing Integrated circuit testing system testing Benchmark testing Automatic testing Laboratories Power engineering computing Power system reliability Integrated circuit technology

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Model-based nonlinear optimal blood glucose control of Type I diabetes patients

Model-based nonlinear optimal blood glucose control of Type ...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society (EMBC)

作者： Levente Kovacs Balazs Kulcsar Jozsef Bokor Zoltan Benyo Department of Control Engineering and Information Technology Budapest University슠of슠Technology슠and슠Economics Hungary Delft Center for System and Control Faculty of Mechanical Maritime and Materials Engineering Technical University Delft Netherlands Computer and Automation Research Institute Hungarian Academy of Sciences Budapest Hungary

Using induced L 2 -norm minimization, a robust controller was developed for insulin delivery in Type I diabetic patients. The high-complexity nonlinear diabetic patient Sorensen-model [1] was considered. LPV (Linear Parameter Varying) methodology was used to develop open loop model and robust controller. Considering the normoglycemic set point (81.1 mg/dL), a polytopic set was created over the physiologic boundaries of the glucose-insulin interaction of the Sorensen-model. In this way, LPV model formalism was defined. The robust control was developed considering input and output multiplicative uncertainties with other weighting functions.

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Analysis and Formulation of Printing Process to Develop Knowledge-Based Scheduling Software

Analysis and Formulation of Printing Process to Develop Know...

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International Conference on Innovative Computing, Information and control (ICICIC)

作者： Shimpei Matsumoto Koji Okuhara Nobuyuki Ueno Hiroaki Ishii Department of Computer and Control Engineering Oita National College of Technology Oita Japan Department of Management and Information System Prefectural University of Hiroshima Hiroshima Japan Graduate School of Information Science and Technology Osaka University Suita Osaka Japan

We have addressed the improvement of production efficiency and the review of business process for an automotive parts supplier, and the goal of this study is the development of production management software. This paper describes the business result analysis in printing process and a formulation of the tacit procedure by observing worker's empirical rule to develop the knowledge-based scheduling software. The whole of business processes are clarified by our previous researches, and the scheduling problem of printing process has been mainly discussed. Previously the printing process has been improved only by theoretical aspect, however it cannot flexibly respond to the change of production conditions such as the dispersion of order, the interrupt of urgent task, and the inventory quantity of parts in spite of the actual field can handle these. Therefore this paper regards that the technical know-how of tacit knowledge in the actual printing field is absolutely necessary factor in response to the change of production conditions, and a formulation designed to the minimization of setup operation are expressed.

关键词： Printing Production Job shop scheduling Business Lot sizing Manufacturing Color

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A solution to unit commitment problem using hybrid ant system/priority list method

A solution to unit commitment problem using hybrid ant syste...

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National Proceedings Power and Energy Conference (PECon)

作者： Songsak Chusanapiputt Dulyatat Nualhong Sujate Jantarang Sukumvit Phoomvuthisarn Department of Electrical Power Engineering Faculty of Engineering Mahanakom University of Technology Bangkok Thailand Electrical Engineering Department Electrical and Control System Engineering Division Electricity Generating Authority of Thailand Bangkok Thailand Department of Computer Engineering and Satellite Research Center Faculty of Engineering Mahanakom University of Technology Bangkok Thailand Center of Excellence in Electrical Power Technology Chulalongkom University Bangkok Thailand

This paper presents a new method to solve unit commitment problem with operating constraints using a hybrid ant system/priority list method (HASP). The proposed methodology employs ant system in cooperating with the priority list method to find unit commitment solution as means of mutually combining the advantages of them in that a flexibility of the priority list method is reinforced, while AS algorithm can gain the benefit of using bias information for improving its performance during search process. The simulation results show that the proposed HASP is capable of obtaining satisfactory solution within reasonable computational time.

关键词： Power engineering and energy Power generation Evolutionary computation Power system simulation Fuels Costs Power engineering control systems systems engineering and theory Hybrid power systems

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control of Autonomous Solid Oxide Fuel Cells Subject to Sudden Load Variations

Control of Autonomous Solid Oxide Fuel Cells Subject to Sudd...

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2008 IEEE/PES Transmission & Distribution Conference & Exposition, part 1

作者： Dong-Jing Lee Li Wang Department of Electrical Engineering and Computer Science Chair for Computer Architecture and System Programming National Cheng Kung University Tainan Taiwan

This paper presents dynamic behaviors of autonomous solid oxide fuel cells (SOFC) with AC bus control. Both voltage and frequency control are utilized to achieve load-sharing of the studied SOFC feeding isolated loads. A DC-to-DC converter is connected to the output terminals of the studied SOFC for stabilizing output voltage and current fluctuations under different loading conditions. The PWM inverter connected to the output terminals of the DC-to-DC converter is operated under voltage-controlled mode to regulate the voltage profile across the connected loads. It can be concluded from the simulation results that the proposed voltage and frequency droop controllers of the PWM inverter may operate satisfactory under stand-alone mode.

关键词： Solid oxide fuel cells (SOFC) DC-to-DC converter PWM inverter Stand-alone mode

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Redundant optical data transmission using semiconductor lasers

Redundant optical data transmission using semiconductor lase...

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ACS/IEEE International Conference on computer systems and Applications

作者： H. D. Wacker J. Borcsok H. Hillmer Development HIMA Paul Hildebrandt GmbH + Co KG Bruehl GERMANY Department of Electrical Engineering and Computer Science Chair for Computer Architecture and System Programming Kassel GERMANY University of Kassel Institute of Nanostructure Technologies and Analytics (INA) and Center for Interdisciplinary Nanostructure Science and Technology (CINSaT) Kassel GERMANY

This paper is dealing with redundant optoelectronic data transmission with special respect to laser channels. The concept of the generalized erasure channel (GEC) is used to determine the probability of undetected error for some binary symmetric and non-symmetric channels protected by appropriate codes. In detail, communication via different binary symmetric channels (BSCs), generalized erasure channels and symmetrized binary non symmetric channels (BNSCs) is investigated. Simple upper bounds are given, relating the new formulas to that one of the BSC Finally the results in connection with an inequality for proper codes are applied to multi wavelength optical transmission through channels generated by semiconductor lasers.

关键词： Data communication Semiconductor lasers Error probability Optical transmitters Protection Safety Wavelength division multiplexing Laser theory Upper bound Linear code

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Multichannel Adaptive Stochastic Filtering for Active Noise control in Personal computers

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IFAC Proceedings Volumes 2008年第2期41卷 10154-10159页

作者： Charles E. Kinney Intae Lee Raymond de Callafon Mehrban Jam System Identification and Control Laboratory Department of Mechanical and Aerospace Engineering University of California San Diego La Jolla California 92093-0411 USA Institute for Neural Computation & Department of Electrical and Computer Engineering University of California San Diego La Jolla California 92093-0411 USA Hewlett-Packard Laboratories MMSL 1501 Page Mill Road Palo Alto CA 94304

In this paper, the feasibility of using active noise control inside personal computers is demonstrated by applying an adaptive filter to Hewlett-Packard's Blackbird 002 Gaming PC. Conditions relating the control signals and the sound heard by an external listener are presented as a means of evaluating the hardware design before applying the adaptive filter. A multichannel stochastic adaptive filter is derived by vectorizing the equations and applying gradient descent and Newton's method. For implementation purposes, data-based approximations to the gradient and hessian are provided. It is shown that a 6dB reduction in sound pressure level is obtainable by adding reference microphones, error microphones, a speaker, and some acoustical foam into the system even though the length of the noise cancelation system is small, approx. 6”, compared to the fundamental wavelength of the noise, approx 23”.

关键词： Noise control Feedforward control Multichannel Adaptive Filters Stochastic Approximation

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Robust stability and H-infinity control for uncertain discrete-time Markovian jump singular systems

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控制理论与应用（英文版） 2008年第2期6卷 133-140页

作者： Shuping MA Chenghui ZHANG Xinzhi LIU School of Mathematics and System Science Shandong University Jinan Shandong 250100 China School of Computer Science and Technology Shandong University Jinan Shandong 250061 China School of Control and Engineering Shandong University Jinan Shandong 250061 China Department of Applied Mathematics University of Waterloo Waterloo Ontario N2L 3G1 Canada

The robust stability and stabilization, and H-infinity control problems for discrete-time Markovian jump singular systems with parameter uncertainties are discussed. Based on the restricted system equivalent （r.s.e.） transformation and by introducing new state vectors, the singular system is transformed into a discrete-time Markovian jump standard linear system, and the linear matrix inequality （LMI） conditions for the discrete-time Markovian jump singular systems to be regular, causal, stochastically stable, and stochastically stable with 7- disturbance attenuation are obtained, respectively. With these conditions, the robust state feedback stochastic stabilization problem and H-infinity control problem are solved, and the LMI conditions are obtained. A numerical example illustrates the effectiveness of the method given in the oaoer.

关键词： Discrete-time singular system Markovian jump system Robust stability and stabilization H-infinitycontrol Linear matrix inequality（LMI）

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