Proceedings of the 33rd Southeastern Symposium on System Theory (Cat. No.01EX460)

20-20 March 2001

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  • Proceedings of the 33rd Southeastern Symposium on System Theory (Cat. No.01EX460)

    Publication Year: 2001
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    Freely Available from IEEE
  • Personal computer assisted tutorial for Smith charts

    Publication Year: 2001, Page(s):139 - 143
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (477 KB) | HTML iconHTML

    A recognized advantage associated with the use a Smith chart is that it obviates the employment of complex algebra in solving transmission line problems. The paper focuses on combining the power of the PC, with its visual aesthetics, speed and accuracy, for the purpose of familiarizing students in the use of the Smith's graphical transmission line calculator. The demo version of the PC Smith chart... View full abstract»

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  • Author's index

    Publication Year: 2001, Page(s):431 - 432
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    Freely Available from IEEE
  • A method for multiple fault diagnosis in analog circuits

    Publication Year: 2001, Page(s):65 - 68
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB) | HTML iconHTML

    Fault diagnosis of analog circuits is essential for analog and mixed-signal circuits testing and maintenance. A method for multiple fault diagnosis in linear analog circuits is proposed based on the large change sensitivity analysis and ambiguity group locating technique. A test equation establishes the relationship between the measured responses and deviations of faulty parameters. Multiple excit... View full abstract»

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  • Uninhabited aerial vehicle research at Ohio University and Mississippi State University

    Publication Year: 2001, Page(s):13 - 16
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB) | HTML iconHTML

    The Avionics Engineering Center and the School of Electrical Engineering and Computer Science at Ohio University (OU) have established a research effort in uninhabited aerial vehicles (UAVs) with the intent developing autonomous flight capabilities. The Department of Electrical and Computer Engineering at Mississippi State University has recently entered into a collaborative effort with OU in this... View full abstract»

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  • A survey of neural networks applications in automatic control

    Publication Year: 2001, Page(s):349 - 353
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB) | HTML iconHTML

    This paper is a survey of recent literature in neural networks applications in the field of automatic control. It is now generally accepted in the field that for nonlinear, imperfectly or partially known, and complicated systems, neural networks offer some of the most effective control techniques. In this paper, no attempt has been made to provide mathematical or algorithmic details of the various... View full abstract»

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  • Multiphase sinusoidal oscillators using translinear current conveyors and only grounded passive components

    Publication Year: 2001, Page(s):59 - 63
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB) | HTML iconHTML

    A generalized multiphase sinusoidal oscillator is presented. The circuit realization uses the translinear bipolar second generation current-controlled conveyors to generate arbitrary n current signals equally spaced in phase. The proposed circuit consists of n multi-output current controlled conveyors and a current amplifier connected in cascade. The only passive component employed in each of the ... View full abstract»

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  • Adaptive control of aircraft lateral directional axis using subspace stabilization

    Publication Year: 2001, Page(s):425 - 429
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB) | HTML iconHTML

    A linear adaptive control for the F-14 aircraft lateral-directional axis using disturbance-observers and subspace-stabilization theory is presented. Disturbance accommodating observers are used to estimate and cancel out the combined effects of nonlinear, uncertain and off-nominal terms in real-time. Subspace stabilization techniques are used to steer the system “error-state” to a cert... View full abstract»

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  • A survey of recent work in adaptive flight control

    Publication Year: 2001, Page(s):7 - 11
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB) | HTML iconHTML

    This paper is a survey of recent literature in adaptive flight control. Although there are many published articles using classical control techniques, the trend appears to be toward using intelligent control techniques, particularly neural networks based methods. The survey is not presented in a chronological order, and it is not claimed to be exhaustive. In this rapidly progressing field, the onl... View full abstract»

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  • A survey of techniques used in the synthesis of hardware from C/C++ as a part of hardware/software co-design

    Publication Year: 2001, Page(s):301 - 304
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB) | HTML iconHTML

    We present a survey of various techniques used to synthesize hardware from a general purpose programming language like C/C++. We highlight the important features of each of the techniques and research projects, and also discuss the hardware/software co-design aspects at each stage View full abstract»

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  • Forecasting using genetic programming

    Publication Year: 2001, Page(s):343 - 347
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    In this paper, two models for forecasting the Nile River flow have been developed. The traditional linear autoregressive (AR) model and genetic programming (GP) based model are presented. The performance of both the AR and GP models were tested using a set of measurements recorded at the Donagola station located in the Northern Sudan. A significant improvement of the error when using the GP model ... View full abstract»

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  • Modem protocols for the analog cellular data collection systems

    Publication Year: 2001, Page(s):53 - 57
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB) | HTML iconHTML

    The explosion of wireless technology, especially cellular telephony, has greatly enhanced communication and data transfer over wide geographic areas. Initially, analog technology for the transfer of information (voice/data) had been the driving force. But now, digital technology appears to be the driving force in wireless communication. Although digital technology is growing by leaps and bounds an... View full abstract»

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  • Gain scheduling via control signal interpolation: the ball and beam example

    Publication Year: 2001, Page(s):419 - 423
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB) | HTML iconHTML

    This paper presents an approach to gain scheduled controller design based on plant linearizations about equilibria. This method yields controllers that automatically have a desired linearization property and also assume a linear parameter-varying form. The approach eliminates the necessity for measurement of time-derivatives of certain controller inputs as required in related work. A gain schedule... View full abstract»

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  • Control of integrated radial and axial magnetic bearings

    Publication Year: 2001, Page(s):1 - 5
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB) | HTML iconHTML

    The goal of this research is to develop a magnetically suspended momentum wheel capable of actively reducing imbalance vibrations. Typically, this would require two radial magnetic bearings with separately energized x and y-axes and one axial bearing. In this system, however, the radial and axial functions were combined into a single design for a more compact and elegant package. One downside of t... View full abstract»

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  • Distributed system control based upon combinatorial and probabilistic characterizations of associated decoupling factors

    Publication Year: 2001, Page(s):293 - 300
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (676 KB) | HTML iconHTML

    This paper examines the propensities of distributed control systems to lapse into temporally and topologically decoupled states and recommends a generally viable control methodology for distributed systems which reduces this propensity View full abstract»

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  • Statistical approach to clustering in pattern recognition

    Publication Year: 2001, Page(s):177 - 181
    Cited by:  Papers (3)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (404 KB) | HTML iconHTML

    Clustering is a typical method of grouping data points in an unsupervised learning environment. The performance of most clustering algorithms is dependent on the accurate estimate of the cluster number, which is always unknown in the real applications. We propose a parametric approach, which starts with an estimate of the local distribution and efficiently avoids pre-assuming the cluster number. T... View full abstract»

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  • Transform domain/cyclic code shift keying system on an urban multipath channel

    Publication Year: 2001, Page(s):37 - 40
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (256 KB) | HTML iconHTML

    This research proposes an application of the transform domain/cyclic code shift keying (TD/CCSK), which is one spread spectrum method. We apply the TD/CCSK system in an urban multipath channel and study the performance of this system. The CCSK system is introduced, and then we propose the model for the urban multipath channel. The performance of the system is based on the bit error rate for all ca... View full abstract»

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  • Case-based tool for treatment of behavioral problems

    Publication Year: 2001, Page(s):337 - 341
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (396 KB) | HTML iconHTML

    In case-based reasoning (CBR) systems, solutions to new problems are found by retrieving and modifying the solutions to similar old problems. Many CBR systems use a two step approach for retrieving a similar past case. This paper describes an enhanced approach, which was developed for a CBR decision support tool for treating behavioral problems in Alzheimer's disease patients. Here, the new case i... View full abstract»

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  • A novel method of tracking the target in Doppler frequency shift

    Publication Year: 2001, Page(s):73 - 76
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    The conventional CW (continuous wave) radar provides the velocity information of the moving targets by extracting the Doppler shift in frequencies and indicating them in display units. Tracking in range and tracking in Doppler are, by and large, incorporated in pulse radar operating as MTI (moving target indicator). The paper proposes a tracking circuit to be included in the receiver of the CW rad... View full abstract»

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  • Detecting network intrusions via a statistical analysis of network packet characteristics

    Publication Year: 2001, Page(s):309 - 314
    Cited by:  Papers (9)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (572 KB) | HTML iconHTML

    With the growing threat of abuse of network resources, it becomes increasingly important to be able to detect malformed packets on a network and estimate the damage they fan cause. In this paper, we collect and analyze all of the IP and TCP packets seen on a network that either violate existing standards or should not appear in modern internets. Our goal is to determine what these suspicions packe... View full abstract»

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  • Optimum detection of differentially-encoded MPSK in a dispersive aeronautical channel

    Publication Year: 2001, Page(s):47 - 51
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB) | HTML iconHTML

    Several different waveforms have been proposed for use in aeronautical data links in the next-generation National Airspace System (NAS). Reliability of the links, expressed in terms of the assurance of a very low probability of message error, is crucial. Hence, optimal detection schemes are of interest. The performance of the proposed waveforms in multipath channels has not been thoroughly studied... View full abstract»

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  • An electronic stethoscope with diagnosis capability

    Publication Year: 2001, Page(s):133 - 137
    Cited by:  Papers (11)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB) | HTML iconHTML

    A means of analyzing acoustic heart sounds is described. The system analyzes heart sound data, isolating key features of the heartbeat signatures to produce a list of possible diagnoses. The system has six major components: heart beat extraction, segmentation of the heart sound cycle, extraction of murmur data, time-frequency analysis of murmurs, statistical metrics and diagnosis algorithms. Imple... View full abstract»

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  • Adaptive aircraft lateral guidance

    Publication Year: 2001, Page(s):413 - 417
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB) | HTML iconHTML

    An adaptive lateral guidance for the F-14 aircraft using disturbance-observers and the subspace-stabilization theory is presented. Disturbance accommodating observers are used to estimate and cancel out the combined effects of nonlinear, uncertain and off-nominal terms in real-time. This paper uses the design of a lateral axis control of the aircraft in a companion paper presented in this conferen... View full abstract»

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  • Impact of environmental factors on the economic evaluation of renewable energy alternative generation

    Publication Year: 2001, Page(s):123 - 126
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (264 KB) | HTML iconHTML

    With the ever growing concern about global warming, environmental pollution, and the rising cost of fossil fuels like oil and coal, there is a greater interest in developing renewable energy sources to meeting growing energy demand. Additionally with the requirement for utilities to provide transmission access to independent power producers (IPP) to deliver their energy wherever needed, and the gr... View full abstract»

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  • An entropy-based learning hardware organization using FPGA

    Publication Year: 2001, Page(s):209 - 213
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (380 KB) | HTML iconHTML

    A neural network model with entropy-based evaluator called EBE is proposed. An FPGA based design that implements the EBE model is presented. The PCI bus interface including DMA transfer is embedded into the design. 8-bit test data is fed into the design to verify the correctness of the algorithm and its FPGA implementation View full abstract»

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