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Music instrument pitch detection (Using Microcontrollers)

IFAC Proceedings Volumes 2006年第21期39卷 412-415页

作者： Jan Floder Department of Measurement and Control VŠB Technical University Ostrava Faculty of Electrical Engineering and Informatics 17. listopadu 15 70833 Ostrava CZECH REPUBLIC

Rapid development of microcontrollers (and hand in hand cost reduction) enahle us to construct cheaper and/or more powerful digital tuners (as can he seen on the market). This publication shows possible methods how fo... 详细信息

关键词： Signal Analysis Fourier Analysis Pitch

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An enhanced zone-based routing protocol for mobile ad-hoc networks based on route reliability

An enhanced zone-based routing protocol for mobile ad-hoc ne...

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International Conference on Advanced Information Networking and Applications (AINA)

作者： A. Koyama Y. Honma J. Arai L. Barolli Department of Informatics Yamagata University Japan Graduate School of Science and Engineering Yamagata University Japan Department of Information and Control Engineering Yamagata College of Industry and Technology Japan Department of Information and Communication Engineering Fukuoka Institute of Technology Japan

In mobile ad-hoc networks (MANET), the nodes intercommunicate through single-hop and multi-hop paths in a peer-to-peer fashion. Intermediate nodes between two pairs of communication nodes act as routers. Thus the nodes operate both as hosts and routers. The nodes are mobile, so the topology of the network may change rapidly and unexpectedly. One of well-known routing protocol for ad-hoc networks is zone routing protocol (ZRP). However when the protocol searches for a new route, it sends many useless control packets, which increase the network load and decrease the network performance. In this paper, we propose an enhanced zone routing protocol (EZRP). In EZRP, each node calculates the reliability of the route. In the case of reliable route, the source node sends the data packet directly to the destination node using that route without route searching. While, in the case of unreliable route, the source node searches for a new route again. We show that the network performance can be improved by using EZRP.

关键词： Routing protocols Ad hoc networks Peer to peer computing Mobile ad hoc networks Mobile communication Network topology Wireless LAN Tin informatics Reliability engineering

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Real-time Design Constraints in Implementing Active Vibration control Algorithms

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International Journal of Automation and computing 2006年第3期3卷 252-262页

作者： Mohammed Alamgir Hossain Mohammad Osman Tokhi Department of Computing School of Informatics University of BradfordBradford BD7 1DPUK Department of Automatic Control and Systems Engineering The University of Sheffield Sheffield S1 3JDUK

Although computer architectures incorporate fast processing hardware resources, high performance real-time implementation of a complex control algorithm requires an efficient design and software coding of the algorithm so as to exploit special features of the hardware and avoid associated architecture shortcomings. This paper presents an investigation into the analysis and design mechanisms that will lead to reduction in the execution time in implementing real-time control algorithms. The proposed mechanisms are exemplified by means of one algorithm, which demonstrates their applicability to real-time applications. An active vibration control （AVC） algorithm for a flexible beam system simulated using the finite difference （FD） method is considered to demonstrate the effectiveness of the proposed methods. A comparative performance evaluation of the proposed design mechanisms is presented and discussed through a set of experiments.

关键词： Algorithm analysis and design active vibration control （AVC） flexible beam system real-time control memory management.

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Design of V4DB - Experimental real-time database system

Design of V4DB - Experimental real-time database system

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IECON 2006 - 32nd Annual Conference on IEEE Industrial Electronics

作者： Król, Václav Pokorný, Jan Institute of Information Technologies Silesian University in Opava Faculty of Business Administration in Karvina Univerzitni namesti 1934/3 733 40 Karviná Czech Republic Department of Measurement and Control VSB - Technical University of Ostrava Faculty of Electrical Engineering and Informatics 17. listopadu 15 708 33 Ostrava Czech Republic

ISBN: (纸本)1424401364

At the present time many embedded and real time systems require access to increasingly larger amount of data. Data structures can not be fully application dependent as usual and more sophisticated data processing algorithms are required. Placing conventional database principles into the real time environment is an obvious way but it is very difficult to achieve guaranteed real time database services because various components can compete for system resources. Our objective is to design an experimental real-time database system which would be suitable enough to study the most important real-time database issues, including CPU scheduling, concurrency control and conflict resolution. Because of the strong interactions among the processed components, proposed system can help us to understand their effect on system performance and to identify the most important factors. © 2006 IEEE.

关键词： Concurrency control

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Design of experimental platform for testing real-time database transaction processing

Design of experimental platform for testing real-time databa...

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作者： Król, Václav Pokorný, Jan Institute of Information Technologies Silesian University in Opava Faculty of Business Administration in Karvina Univerzitní náměstí 1934/3 733 40 Karviná Czech Republic Department of Measurement and Control VŠB Technical University Ostrava Faculty of Electrical Engineering and Informatics 17. listopadu 15 708 33 Ostrava Czech Republic

ISBN: (纸本)8374810351

It is very difficult to achieve guaranteed real time database services when putting a database into a real-time environment because various components can compete for system resources. Previous research in real-time databases has focused primarily on evolution of transaction processing algorithms, priority assignment strategies and concurrency control techniques. But for the most part the research efforts are based only on simulation studies with many parameters defined. Our objective is to design and implement an experimental real-time database system suitable for study of real time transaction processing. The experimental system is implemented as an integrated set of the most important functional parts upon the real-time operating system VxWorks. It serves as a support platform for performance evaluation of known and new algorithms of the particular processing components to understand their effect on system performance and to identify the most influencing factors. Copyright © 2006 IFAC.

关键词： Concurrency control

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ROBUST STABILITY CHECKING OF A CLASS OF LINEAR INTERVAL FRACTIONAL ORDER SYSTEM USING LYAPUNOV INEQUALITY

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IFAC Proceedings Volumes 2006年第11期39卷 89-94页

作者： Hyosung Ahn YangQuan Chen Igor Podlubny Center for Self-Organizing and Intelligent Systems (CSOIS) Department of Electrical and Computer Engineering Utah State University Logan UT 84322-4160 USA Department of Applied Informatics and Process Control Technical University of Kosice B. Nemcovej 3 04200 Kosice Slovak Republic

This paper provides a new analytical robust stability checking method of fractional-order linear time invariant interval uncertain system. This paper continues the authors’ previous work (Chen et al., 2005a) where matrix perturbation theory was used. For the new robust stability checking, Lyapunov inequality is utilized for finding the maximum eigenvalue of a Hermitian matrix. Through numerical examples, the usefulness and the effectiveness of the newly proposed method are verified.

关键词： Fractional order linear dynamic systems robust stability interval linear time invariant systems interval matrix

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A Multiple Vehicles Routing Problem Algorithm with Stochastic Demand

A Multiple Vehicles Routing Problem Algorithm with Stochasti...

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World Congress on Intelligent control and Automation (WCICA)

作者： Jianhua Fan Xiufeng Wang Hongyun Ning School of Electronic Information and Control Engineering Beijing Polytechnic University Beijing School of Computing Informatics and Decision Systems Engineering Arizona State University Tempe AZ USA Department of Chemical and Bioengineering University of Illinois Chicago IL USA

A heuristic algorithm for multiple vehicles routing problem with stochastic demand is proposed and the goal is to minimize the total traveling cost. Two-phase method is adopted to deal with this problem. In the first phase, an algorithm is proposed to partition customers into clusters, and the main task of the second phase is to design an effective routing through each cluster of customers to minimize the total expected traveling cost. Both the a priori strategy and the reoptimization strategy are used to obtain the optimal routing. The experiment results indicate that this method can produce solutions of good quality and is an effective algorithm for the multiple vehicles routing problem with stochastic demand

关键词： Routing Stochastic processes Clustering algorithms Vehicle safety Partitioning algorithms Costs Vehicle driving Councils Information technology Computer science

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Scientific simulation execution support on a closed distributed computer environment

Scientific simulation execution support on a closed distribu...

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e-Science 2006 - 2nd IEEE International Conference on e-Science and Grid Computing

作者： Fuju, Hideaki Kawata, Shigeo Sugiura, Hideaki Saitoh, Yuichi Hayase, Yoshikazu Usami, Hitohide Yamada, Motohiro Miyahara, Yutaka Kanazawa, Hiroyuki Kikuchi, Takashi Graduate School of Engineering Utsunomiya University 7-1-2 Yohtoh Utsunomiya 321-8585 Japan Department of Electronic Control Engineering Toyama National College of Maritime Technology 1-2 Ebie Neriya Shinminato Toyama 933-0293 Japan National Institute of Informatics 2-1-2 Hitotsubashi Chiyoda-ku Tokyo 101-8430 Japan Fujitsu Limited Shiodome 1-5-2 Higashi-Shinbashi Minato-ku Tokyo 105-7123 Japan

ISBN: (纸本)0769527345

It is difficult for users to submit jobs to distributed computers and to retrieve calculation data from them in scientific computings. In this paper, we discuss and develop a robust job execution service system in a closed distributed computer system. The job execution service system consists of a dynamic system management servers, execution servers and data servers. The dynamic system management server is duplicated in order to keep the system robust, and has an assistant management server. The dynamic system management server has a function of the job execution system management, including software deployment, program compilation, job execution, job status retrieval and computing data retrieval. This system does not require special middleware such as Globus or UNICORE or GLite or so. Users access the web page on the dynamic system management server, and the clients submit jobs. After the submitted job finishes, the dynamic system management server collects the information from other distributed computers. The dynamic management server and its assistant server move dynamically to new servers, if the present servers become busy. The dynamic system management server also demands the execution server to transfer the result data to the optimal data server. The dynamic system management server copies the computing data and sends the compressed computing data to another optimal data server in order for a robust data storage system. The clients can deploy their programs, execute jobs and retrieve the result data by accessing only the web page in the job execution service system. This job execution management server also has a function of automatic system construction, so that the users can manage the setup of the job execution management system easily on their closed distributed computers. © 2006 IEEE.

关键词： Distributed computer systems

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Design of V4DB - Experimental Real-Time Database System

Design of V4DB - Experimental Real-Time Database System

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Annual Conference of Industrial Electronics Society

作者： Vaclav Krol Jan Pokorny Institute of Information Technologies Faculty of Business Administration in Karvina Silesian University in Opava Czech Republic Department of Measurement and Control VSB Faculty of Electrical Engineering and Informatics Technical university of Ostrava Ostrava Czech Republic

关键词： Real time systems Database systems Object oriented modeling Concurrency control Operating systems System performance Standards development Information technology Data structures Data processing

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LPV fault detection of glucose-insulin system

LPV fault detection of glucose-insulin system

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Mediterranean Conference on control and Automation (MED)

作者： L. Kovacs B. Kulcsar J. Bokor Z. Benyo Department of Control Engineering and Information Technology Faculty of Electrical Engineering and Informatics Budapest University슠of슠Technology슠and슠Economics Budapest Hungary Department of Control and Transport AutomLation Faculty of Transportation Budapest University슠of슠Technology슠and슠Economics Budapest Hungary Colmputer and Automation Rearch Institute Hungarian Science Academy Budapest Hungary

A new approach is proposed in the paper for unknown glucose inlet estimation in case of diabetic patients under insensitive care in form of a linear parameter varying (LPV) model class. The nonlinear two compartment glucose-insulin system is rewritten in affine parameter varying form in order to handle the dynamics with LPV fault detection and isolation (FDI) method. The aim of the closed-loop fault detection, on the one hand, is to estimate the unknown disturbance input of the system, on the other hand to recognize the actuator fault. A parameter varying controller assures the performance requirements and stability of the system

关键词： Fault detection Sugar Diabetes Insulin Filters Automatic control Medical control systems Humans control systems Automatic generation control

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