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System Theory, 1996., Proceedings of the Twenty-Eighth Southeastern Symposium on

Date March 31 1996-April 2 1996

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Displaying Results 1 - 25 of 105
  • Proceedings of 28th Southeastern Symposium on System Theory

    Publication Year: 1996
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    Freely Available from IEEE
  • Detection of multiple unresolved Rayleigh targets using quadrature monopulse measurements

    Publication Year: 1996, Page(s):285 - 289
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (426 KB)

    When the returns from two or more targets interfere (i.e., the signals are not resolved in the frequency or time domains) in an amplitude comparison monopulse radar system, the direction of arrival estimate indicated by the monopulse ratio can wander far beyond the angular separation of the targets. The failure to detect the presence of the interference can be catastrophic to the performance of th... View full abstract»

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  • Author index

    Publication Year: 1996
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    Freely Available from IEEE
  • A system for vehicle classification from range imagery

    Publication Year: 1996, Page(s):327 - 331
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    In this project we consider automated vehicle location and classification systems. Current systems which utilize loop detectors or video cameras have deficiencies. Video based systems are sensitive to environmental conditions and do not perform well in vehicle classification. The new generation of range or distance sensors that are being developed offer the promise of sensors which are not sensiti... View full abstract»

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  • High frequency noise reduction using an acousto-optic cell

    Publication Year: 1996, Page(s):322 - 326
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    We present a novel and simple optical image processing system for high frequency noise reduction. The system consists of a single imaging lens and an acousto-optic modulator. Image edge enhancement is achieved by Bragg diffraction. Experimental and computer simulation results are given View full abstract»

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  • Performance analysis of an ATM service multiplexer in the NCIH

    Publication Year: 1996, Page(s):34 - 39
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (476 KB)

    Analyzes the performance of an output-buffered asynchronous transfer mode service multiplexer (ATM-SMX) in the North Carolina Information Highway (NCIH). The ATM-SMX is modeled as a discrete-time finite-buffer single-server queueing system, where two types of traffic represent the inputs of the multiplexer: (1) nonreal-time loss-sensitive traffic; and (2) real-time loss-insensitive traffic. The au... View full abstract»

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  • Dual-input describing function with Matlab

    Publication Year: 1996, Page(s):198 - 200
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (152 KB)

    Generation of altered nonlinear characteristic block using Matlab-Simulink is presented. These blocks can be added to the block library and be used to replace the corresponding nonlinear element for applying dual-input describing function in simulation. This will help teaching and understanding the concept and applications of dual-input describing function. This is a way of incorporating computer ... View full abstract»

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  • Adaptive control of a continuous solution polymerization reactor

    Publication Year: 1996, Page(s):530 - 534
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    This paper focuses on the application of an explicit self-tuning linear quadratic Gaussian controller to the simulation servo control of conversion in a continuous stirred tank solution polymerization reactor under isothermal conditions. A new saturation and controller windup algorithm proposed in Ogunye (1994, 1996) was implemented for the set-point tracking-control policies. The improvement in c... View full abstract»

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  • Continuous singularity functions insight, extensions, and corrections

    Publication Year: 1996, Page(s):447 - 451
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    In spite of the proliferation of signals and system texts, authors have tended to avoid adequate treatments of continuous singularity functions. Furthermore, the limited treatments of singularity functions are not only incomplete, they often include erroneous concepts. Thus, the authors attempt to provide some insight to the nature of singularity functions, present a generalized extension of singu... View full abstract»

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  • A new subband coding technique using (JPEG) discrete cosine transform for image compression

    Publication Year: 1996, Page(s):317 - 321
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1140 KB)

    Subband image coding has been shown to be an effective image compression technique for high quality coding at low bit rates. This paper proposes a new subband image compression technique design based on 2-D single-sideband analysis/synthesis system. This new method involves two basic components: the subband analysis/synthesis subsystem, which is composed of down-sampling/up-sampling and filter ban... View full abstract»

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  • Cooperation of acoustic and vision data for multitarget tracking

    Publication Year: 1996, Page(s):290 - 294
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    This paper explains the implementation of a real time bi-target tracking using both acoustic and video data. We show how the cooperation of highly heterogeneous sensors may improve the overall efficiency. These data are filtered using Kalman filtering techniques. We send reconfiguration orders to the actuators for an optimal new data sampling. The observed scene raises some classical control probl... View full abstract»

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  • Stochastic modelling of pavement roughness

    Publication Year: 1996, Page(s):28 - 32
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    Pavement roughness is usually characterized by a one figure statistic of pavement profile data. This approach discards a rich body of useful pavement information in the pavement profile data. In this study, informative parametric models for pavement roughness are developed where pavement roughness is treated as a stochastic signal. Based on this stochastic modeling of roughness, a new stochastic r... View full abstract»

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  • An adaptive nonlinear control strategy derived from a biological control system

    Publication Year: 1996, Page(s):66 - 70
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (444 KB)

    A nonlinear adaptive control strategy is derived from the biological control system that regulates arterial blood pressure. The parallel control system consists of a linear controller and a nonlinear controller that interact via a reciprocal lateral inhibitory mechanism. The linear controller design is based on an empirical linear model, while the nonlinear controller is constructed from locally s... View full abstract»

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  • Stochastic problems with unbounded control set

    Publication Year: 1996, Page(s):170 - 174
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    Describes a change of time technique for stochastic control problems with unbounded control set. The authors demonstrate the technique on a class of maximization problems that do not have optimal controls. Given such a problem, the authors introduce an extended problem which has the same value function as the original problem and for which there exist optimal controls that are expressible in simpl... View full abstract»

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  • Modeling and simulation of processors and networks for smart Navy aircraft components and systems

    Publication Year: 1996, Page(s):386 - 390
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB)

    Researchers in the HCS Research Lab are developing a variety of network and processor models to support the simulation of smart Navy aircraft components/systems (SNACS) using a coarse-grain, discrete-event, system modeling and simulation tool from NuThena Systems Inc. called Foresight. Foresight is being extended to develop a coarse-grain functional analysis system to portray the behavior of smart... View full abstract»

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  • On multipoint Pade approximation for discrete interval systems

    Publication Year: 1996, Page(s):497 - 501
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    This paper presents multipoint Pade approximation for discrete interval systems. The numerator and denominator of the reduced model are obtained such that Gm(z) to be a Pade approximant of Gs (z), about 2r points. The expansion points used in the approximation could be a mixture of real, imaginary, complex and multiple points, many of the computational difficulties for such a... View full abstract»

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  • Poincare sections and the R-L-diode circuit

    Publication Year: 1996, Page(s):195 - 197
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    The purpose of this paper is to introduce the reader to Poincare sections, bifurcations, and a chaotic circuit. Poincare sections are described by examining a periodically forced system. Bifurcation analysis follows from the Poincare sections, and a few different types of bifurcations are mentioned. The use of these techniques is shown on the R-L-diode circuit View full abstract»

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  • Implementation of a distributed control system for dynamic lane assignment

    Publication Year: 1996, Page(s):524 - 528
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    This paper reviews the basic signing technologies available to the traffic engineer for dynamically changing lane assignments. An example installation of dynamic lane assignment in Houston, TX is reviewed and referenced as the motivation for developing a simple traffic signal cabinet interface for dynamic lane assignment signs. Various candidate control architectures are summarized and a distribut... View full abstract»

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  • Sliding mode control of an inverted pendulum

    Publication Year: 1996, Page(s):248 - 252
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    This paper considers a sliding mode controller for a rotational inverted pendulum. The purpose of this paper is to familiarize the reader with the strengths of sliding mode control on a very popular system. Another purpose is to reveal the authors' unique surface design which permits the pendulum angle (θdes) to be a function of the base angle (β):θdes(β... View full abstract»

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  • Optimal PI-lead controller design

    Publication Year: 1996, Page(s):364 - 368
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    The design of an optimal MIMO PI-lead controller is described for linear, time-invariant systems. The authors consider the linear quadratic regulator (LQR) design framework as a means of optimally selecting the gains of the controller. Therefore, the controller is designed by solving a steady state algebraic Riccati equation. The performance between the PID and optimal PI-lead controllers is illus... View full abstract»

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  • A necessary and sufficient stability criterion for linear time-varying systems

    Publication Year: 1996, Page(s):115 - 119
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    In this paper a necessary and sufficient exponential stability criterion is presented for linear time-varying (LTV) systems based on a previously developed parallel D-spectrum concept. This new result is a corrected version of some previously published results, where an important condition has been overlooked. Extensions of the new result to the assessment of exponential stability using a series D... View full abstract»

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  • Indirect rotator graph networks

    Publication Year: 1996, Page(s):442 - 446
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (456 KB)

    The indirect rotator graph networks are proposed. The proposed networks are the indirect networks obtained by unfolding the rotator graphs, which are the indirect rotator graph network (IRGN) and the enhanced indirect rotator graph network (EIRGN). The authors show that the indirect network based on the rotator graph performs better than the indirect network based on the star graph in terms of hav... View full abstract»

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  • An analysis of induction motor predictive maintenance techniques

    Publication Year: 1996, Page(s):301 - 305
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    Predictive maintenance for large electric motors has generally consisted of traditional tests used to determine the condition of the groundwall insulation of the stator and the integrity of the rotor bars. These tests are trended and an attempt is made to estimate the remaining life of the motor by analyzing the past performance of motors under study. An alternate scheme is proposed which consists... View full abstract»

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  • A survey of approaches to the job shop scheduling problem

    Publication Year: 1996, Page(s):396 - 400
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (484 KB)

    This paper presents a brief introduction to the three primary directions of research in job shop scheduling. These areas are heuristic rules, classical optimization methods, and neural network approaches. The primary purpose is to provide a starting point for researchers who are interested in this area, so there is a focus on references to helpful technical papers in each of these areas of researc... View full abstract»

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  • Image processing applied to real time measurement of traffic flow

    Publication Year: 1996, Page(s):312 - 316
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (524 KB)

    This paper describes a computer vision system for the real time measurement of traffic flow. The traffic images are captured by a video camera and digitized into a computer. The measuring algorithms are based on edges detection and comparison between a calculated reference without vehicles and the current image of traffic lanes. Tests under real traffic conditions were satisfactory, with over 90% ... View full abstract»

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