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Journal of Robotics and Mechatronics 2003年第5期15卷 473-473页

作者： Osuka, Koichi Tkdokoro, Satoshi Department of Systems Science Kyoto University Japan Department of Computer & Systems Engineering Kobe University President International Rescue System Institute Japan

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Fault detection of non-linear systems based on multi-form quasi-armax modeling and its application to the ship benchmark 13

Fault detection of non-linear systems based on multi-form qu...

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13th IFAC Symposium on system Identification, SYSID 2003

作者： Kumamaru, K. Inoue, K. Hosoyamada, Y. Söerström, T. Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology Kawazu 680-4 Fukuoka Iizuka820-8502 Japan Department of Automatic Control and System Analysis Institute of Technology Uppsala University P.O.Box 27 Uppsala Sweden

This paper is concerned with an application study of model-based fault detection method to a ship propulsion system. When modeling the object system, Quasi-ARMAX model with multi-model form is used. In this model, the system non-linearity is incorporated into model parameters by using non-linear non-parametric models (NNMs). Kullback discrimination Information (KDI) is introduced as fault detection index to evaluate the distortion in identified model, which is caused by a fault. The effectiveness of the method is verified through simulation studies on the ship propulsion system. © 2003 International Federation of Automatic Control.

关键词： Fault detection

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Organizational architectures and mission requirements: A model to determine congruence

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systems engineering 2003年第3期6卷 184-194页

作者： Handley, Holly A.H. Levis, Alexander H. Systems Architectures Laboratory C3I Center George Mason University Fairfax VA 22030 George Mason University Systems Architecture Laboratory Department of Electrical Computer and Systems Engineering C3I Center System Architectures Laboratory

In order to determine congruence between proposed organizational architectures and evolving mission requirements, an executable model was developed in support of a subject experiment testing the hypothesis that an organization congruent with an expected mission results in better performance than a noncongruent organization. The model is based on the task process, the sequence of stages that occur in order to complete a task, where the delays of each stage are based on the interactions of the task with decision-makers and resources;in this case, tasks are limited to simple tasks completed by a single decision-maker with a single resource. The model is configured to a particular organizational design and simulated with a scenario, a list of tasks and their parameters that characterize the mission. Congruence is determined by using regression analysis to fit a linear equation to the output of the simulation and computing the coefficient of determination to evaluate the fit. The model was developed with trial experiment data and validated with post-experimental results. This model provides the foundation for a future, second order model that will include multiple decision-makers interacting with multiple resources to complete complex tasks. © 2003 Wiley Periodicals, Inc.

关键词： Architectural design

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Novel time series analysis and prediction of stock trading using fractal theory and time delayed neural network

Novel time series analysis and prediction of stock trading u...

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IEEE International Conference on systems, Man and Cybernetics

作者： F. Yakuwa Y. Dote M. Yoneyama S. Uzurabashi Kushiro branch Hokkaido Electrical Power Company Inc. Kushiro Japan Deuartment of Computer Science & Systems Engineering Muroran Institute of Technology Japan Panasonic Mobile and System Engineering Company Limited

The stock markets are well known for wide variations in prices over short and long terms. These fluctuations are due to a large number of deals produced by agents and act independently from each other. However, even in the middle of the apparently chaotic world, there are opportunities for making good predictions. In this paper the Nikkei stock prices over 1500 days from July to Oct. 2002 are analyzed and predicted using a Hurst exponent (H), a fractal dimension (D), and an autocorrelation coefficient (C). They are H=0.6699 D=2-H=1.3301 and C=0.26558 over three days. This obtained knowledge is embedded into the structure of our developed time delayed neural network. It is confirmed that the obtained prediction accuracy is much higher than that by a back propagation-type forward neural network for the short-term. Although this predictor works for the short term, it is embedded into our developed fuzzy neural network to construct multi-blended local nonlinear models. It is applied to general long term prediction whose more accurate prediction is expected than that by the method proposed.

关键词： Time series analysis Fractals Delay effects Neural networks Stock markets Fluctuations Chaos Autocorrelation Accuracy Fuzzy neural networks

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Fault detection of non-linear systems based on multi-form quasi-armax modeling and its application to the ship benchmark

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IFAC Proceedings Volumes 2003年第16期36卷 1047-1052页

作者： K. Kumamaru K. Inoue Y. Hosoyamada T. Söerström Faculty of Computer Science and Systems Engineering Kyushu Institute of Technology Kawazu 680-4 Iizuka 820-8502 Fukuoka Japan Department of Automatic Control and System Analysis Institute of Technology Uppsala University P.O.Box 27 Uppsala Sweden

关键词： Fault detection Kullback discrimination information non-linear system parameter estimation quasi-ARMAX model

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Application of novel hierarchical approach to formal verification of digital ICs

Application of novel hierarchical approach to formal verific...

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Midwest Symposium on Circuits and systems (MWSCAS)

作者： F.A. El-Licy H.S. Abdel-Aty-Zohdy Department of Information and Computer Science Institute of Statistical Studies and Research Cairo University Egypt Microelectronics System Design Laboratory Electrical and Systems Engineering Oakland University MI USA

A hierarchical approach for the abstraction of digital VLSICs is presented. Circuit layout is hierarchically abstracted into logical constructs of binary tree structures, which may be manipulated to extract circuit functionality for the purpose of verifying design correctness. VLSIC design specification in the form of HDL is hierarchically decomposed to generate logical formulae for the given specification. By comparing the above, a verification report is obtained

关键词： Formal verification Logic design Binary trees Hardware design languages Production Very large scale integration Electrical capacitance tomography Combinational circuits Data structures Boolean functions

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On estimation of fault efficiency for path delay faults

On estimation of fault efficiency for path delay faults

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Asian Test Symposium (ATS)

作者： Fukunaga Kajihara Takeoka Graduate School of Computer Science and System Engineering Kyushu Institute of Technology Japan Center for Microelectronics Systems Kyushu Institute of Technology Japan Semiconductor Company Matsushita Elecrric Indusrrial Company Limited Japan

In this paper, we propose a method to estimate fault efficiency for path delay faults based on untestable path analysis. In path delay fault testing, fault coverage of test patterns is usually, very low, because logic circuits often have huge number of paths including many untestable paths. Hence we should compute fault efficiency rather than fault coverage, but it is too difficult to compute exact fault efficiency in a short time, because there is no method to compute total number of untestable paths quickly. The proposed method statistically estimate the number of untestable paths based on untestable path analysis, and compute fault efficiency. Experimental results show that the proposed method can accurately estimate fault efficiency of given test patterns in a reasonable time.

关键词： Logic circuit testing Fault diagnosis Combinational logic circuits Sequential logic circuits Very-large-scale integration

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A new boundary control method for beam equation with delayed boundary measurement using modified Smith predictors

A new boundary control method for beam equation with delayed...

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IEEE Conference on Decision and Control

作者： Jinsong Liang YangQuan Chen Bao-Zhu Guo Center for Self-organizing and Intelligent Systems (CSOIS) Department of Electrical and Computer Engineering Utah State University Logan UT USA Institute of Systems Sciences Academy of Mathematics and System Sciences Academia Sinica Beijing China

The Smith predictor and its variants are applied to the boundary control of Euler-Bernoulli beam equation with delayed boundary measurement to solve the well-known instability problem due to a small time delay. Simula... 详细信息

ISBN: (纸本)0780379241

关键词： Delay effects Control systems Time measurement Transfer functions Force control Partial differential equations Predictive models Feedback control Stability Intelligent systems

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Receding-horizon estimation for noisy nonlinear discrete-time systems

Receding-horizon estimation for noisy nonlinear discrete-tim...

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IEEE Conference on Decision and Control

作者： A. Alessandri M. Baglietto G. Battistelli T. Parisini Institute of Intelligent Systems for Automation ISSIA-CNR National Research Council of Italy Genoa Italy Department of Communications Computer and System Sciences DIST-University of Genoa Genoa Italy Department of Electrical Electronic and Computer Engineering DEEI-Università di Trieste Trieste Italy

ISBN: (纸本)0780379241

The problem of constructing a receding-horizon estimator for nonlinear discrete-time systems affected by disturbances has been addressed. The noises are assumed to be bounded, additive, and acting on both state and measurement equations. The estimator is designed according to a sliding-window strategy, i.e., so that it minimizes a receding-horizon estimation cost function. The stability of the resulting filter has been investigated and an upper bound on the estimation error has been found. Such a filter can be suitably approximated by parametrized nonlinear approximators as, for example, neural networks. A min-max algorithm turns out to be well-suited to selecting these parameters, as it allows one to guarantee the stability of the error dynamics of the approximate receding-horizon filter. This estimator is designed off line in such a way as to be able to process any possible information pattern. This enables it to generate state estimates almost instantly with a small on-line computational burden.

关键词： Filters Stability Additive noise Noise measurement Nonlinear equations Cost function Upper bound Estimation error Neural networks State estimation

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Paradigm of design for biosystem-on-a-chip(BioSoC)

Paradigm of design for biosystem-on-a-chip(BioSoC)

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IEEE International Conference on Microelectronic systems Education

作者： R.L. Ewing H.S. Abdel-Aty-Zohdy Information Directorate Air Force Research Laboratory Air Force Institute of Technology Department of Electrical and Computer Engineering Wright Patterson Air Force Base OH USA Microelectronics System Design Laboratory Department of Electrical and Systems Engineering Oakland University Rochester MI USA

The paradigm of design for biosystem-on-a-chip (BioSoC), is that multidisciplinary skills are required. Thus, the educational goals are to develop an understanding of micro/macro collaboration along with the ability to apply and use multidisciplinary skills for the design and performance evaluation of a "biosystem on a chip". The need for the architectural design of the BioSoC addresses the next-generation of intelligent information processing systems.

关键词： Intelligent sensors Collaboration Design engineering Biology computing Chemical and biological sensors Biosensors Artificial intelligence Microelectronics Circuits Chemical sensors

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