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System Theory, 1997., Proceedings of the Twenty-Ninth Southeastern Symposium on

Date 9-11 March 1997

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  • Proceedings The Twenty-Ninth Southeastern Symposium on System Theory

    Publication Year: 1997
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    Freely Available from IEEE
  • Author index

    Publication Year: 1997, Page(s):553 - 554
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    Freely Available from IEEE
  • The computation of steady-state distribution of parallel systems with two servers

    Publication Year: 1997, Page(s):256 - 260
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    This paper considers a queuing system that may be applied to specific networking systems and calculates the steady-state probabilities of the number of electronic signals waiting in this parallel queuing system to be transmitted. There are two identical servers, each has its own queue. Upon the arrival time, the new arrival goes into the shortest queue, and stays in that queue until it is served, ... View full abstract»

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  • Target tracking with explicit control of filter lag

    Publication Year: 1997, Page(s):81 - 85
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    Presents a method of gain adjustment for an alpha-beta filter when data points are lost or when the tracking interval changes. The steady-state position and velocity lags are first derived for a step acceleration input. The standard predictor-corrector forms of the filter equations are algebraically rearranged into two uncoupled difference equations; one equation for the smoothed position and one ... View full abstract»

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  • Computing chaotic system control parameters using autoregressive techniques

    Publication Year: 1997, Page(s):460 - 465
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    The sensitivity to initial conditions and orbit complexity which characterize chaotic systems give them a great flexibility to control as compared to non chaotic systems. The motion of chaotic dynamical systems can be converted to periodic motion through small time dependent perturbations, which is a technique developed by Edward Ott, Celso Grebogi, and James York in 1990, known as the OGY techniq... View full abstract»

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  • A new search procedure for distributed parameter identification

    Publication Year: 1997, Page(s):452 - 456
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (676 KB)

    Distributed parameter identification arises in many fields of applications. Identifying spatially varying parameters has been a challenging topic both theoretically and numerically. We introduce some preliminary results regarding a new identification procedure designed for identifying unknown parameter zones under very weak assumptions. The procedure incorporates a few innovative ideas into standa... View full abstract»

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  • Simplex control of AC/DC converters for power factor correction

    Publication Year: 1997, Page(s):244 - 248
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    This paper proposes a new technique for controlling AC/DC converters to achieve power factor correction. In essence, this technique is the minimal form of the space-vector control approach. A 6-switch AC/DC PWM converter is used as an example View full abstract»

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  • Methodologies for efficient asynchronous circuits design

    Publication Year: 1997, Page(s):154 - 158
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    This paper describes the approaches for transistor count minimization for asynchronous control modules. In this design, pull-up/pull-down CMOS is used to implement asynchronous (or self-timed) circuits, which are 4-phase handshake rind dual-rail data format. One of the control blocks, IF module, is discussed as an application example. Moreover, the comparison of transistor count between new implem... View full abstract»

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  • On the identification of sensitive variables of boiler tube leaks

    Publication Year: 1997, Page(s):196 - 200
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Early tube leak detection helps utility to schedule shut down for repairs. This will eliminate the need for forced outage which can be quite costly. Successful detection of early tube leaks depends heavily on the kind of information used for detection. This paper deals with the identification of such information, called here tube leak sensitive variables. Two sources of information are used for th... View full abstract»

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  • Simulation of narrow-band monopulse measurements of closely-spaced targets

    Publication Year: 1997, Page(s):430 - 434
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    When more than one target is in the main lobe of a monopulse radar, the problem of target resolution is important. Simulation of monopulse measurements by two methods of resolving the targets is considered. The first method uses pulse compression by means of a phase coded waveform in order to enhance the range resolution. The second is the transmission of a series of short pulses combined with Dop... View full abstract»

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  • Aeolotropic filter design and measurement gating for remote tracking with gridlock error

    Publication Year: 1997, Page(s):75 - 80
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    Analyzes the effect of gridlock (i.e. alignment) errors on a target track filtering algorithm used for tracking with radar measurements from a remote platform. The case considered is that in which two ships are located in a 2D Cartesian coordinate system, and radar measurements from one (remote) platform are used by another (local) platform to estimate the target position and velocity in the local... View full abstract»

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  • Continuous-time equalizers with adaptive break frequencies

    Publication Year: 1997, Page(s):390 - 393
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    Continuous-time adaptive equalizers are made up of all-pass filters and their performance is dictated by the break frequency of these all-pass filters. This paper deals with the development of equalizers which have the capacity to adapt these break frequencies. The performance of these equalizers is evaluated and compared against those which do not have the capacity of adapting the break frequency... View full abstract»

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  • Event-averaged maximum likelihood estimation tracking for fire-control

    Publication Year: 1997, Page(s):440 - 444
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    The paper describes an event averaged maximum likelihood estimation (EAMLE) filter and compares its performance with that of a joint probabilistic data association (JPDA) filter in a low observable fire control application for tracking crossing targets in clutter. One of the main distinguishing features of the EAMLE filter is that it explicitly models the error correlation that arises between clos... View full abstract»

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  • Target tracking in the presence of ECM: a filter design tool

    Publication Year: 1997, Page(s):514 - 518
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (512 KB)

    This paper describes a filter design tool (FDT) that allows the user to design, tune and evaluate tracking filters to track highly manoeuvring targets in the presence of electronic counter measures (ECM) and false alarms using a monopulse phase array radar (MPAR). The goal is to keep track of the target 95% of the time, using the minimum amount of energy possible (maximum time between dwells and m... View full abstract»

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  • Comparative design methodologies for FPGA based computer arithmetic

    Publication Year: 1997, Page(s):374 - 378
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    Digital systems are growing in size at an exponential rate. This growth is causing the systems to quickly become less comprehendable to the human mind. Many CAD tools have been developed in the past to deal with the increased complexity of these systems. Although many of these tools are helpful and still widely used, the most promising and quickly advancing technology for digital design is the VHD... View full abstract»

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  • A generalized admittance matrix based radial state estimator formulation

    Publication Year: 1997, Page(s):249 - 253
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    Generalized admittance matrix models of line and transformer segments are presented. These models are used to formulate the real and reactive branch power flow and bus power injection measurement equations for a radial system state estimator. The formulation does not require conversion of element parameters to per unit and properly accounts for transformer phase shifts. Finally, the estimator's pe... View full abstract»

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  • Optimal estimation of interconnections of nonlinear interconnected subsystems

    Publication Year: 1997, Page(s):218 - 222
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Optimal estimations of interconnections of nonlinearly interconnected subsystems are obtained via corresponding transformation of system's basis. These estimations can be used for approximate decomposition of entire system. The formulated optimization problem is switched over to a well-studied geometrical programming problem View full abstract»

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  • Development of a fuzzy expert system for power quality applications

    Publication Year: 1997, Page(s):239 - 243
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    Power quality issues have become more important due to the proliferation of microcomputer-based systems that are sensitive to power disturbances. The loads in customer premises have also been the source of power quality problems. It has become important for the utilities to understand the causes for power quality problems and find ways to avoid them. The fuzzy expert system is an effort to underst... View full abstract»

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  • Performance of a memory-based approach to the control of robotic manipulators

    Publication Year: 1997, Page(s):148 - 152
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    The primary objective of this study is to examine the effectiveness of a memory-based control strategy for robotic manipulators. The main idea behind the memory-based control method is to use certain gathered information, such as most recent tracking error, current tracking error and past control experience, to directly modify the current control command. Simulations on a 3 DOF robotic arm show th... View full abstract»

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  • Machine vision processing/selection in printed circuit board manufacturing

    Publication Year: 1997, Page(s):190 - 194
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Machine vision applications are common in the manufacturing of PWBs. Machine vision systems are used in the placement of surface mount devices with lead pitch of 0.025 inch or less. There are two steps in the successful placement of surface mount devices, as follows: (a) The location of the device on the vacuum tip which picks and places the device must be determined. Translation and rotational of... View full abstract»

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  • Tracking unresolved targets in theater ballistic missile defense

    Publication Year: 1997, Page(s):426 - 429
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    Fire control requirements for designating an interceptor against a warhead impose stressing tracking requirements. The article introduces these issues and defines resolution and data association performance measures in the context of theater ballistic missile defense (TBMD). The emphasis of the paper is on definition of underlying concepts and use of analytical expressions to estimate resulting ra... View full abstract»

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  • α-β target tracking with track rate variations

    Publication Year: 1997, Page(s):70 - 74
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    Considers the theoretical and practical implementation of the α-β tracking process under the influence of track rate variations and/or track period perturbations. These considerations are necessary when the α-β tracker is used in the Benchmark 96 target tracking problem, a challenge to the tracking community to generate tracking solutions to for a set of maneuvering targets u... View full abstract»

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  • The design of a low cost local area network using NetWare

    Publication Year: 1997, Page(s):40 - 43
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    A low cost and high performance NetWare single server system was designed and constructed using off-the-shelf hardware and custom software. This design is based on the network computing OSI model and Novell NetWare ODI model. The application of RAID technology in conjunction with the NetWare ODI protocol enables users or workgroups to share maximum resources on a single server, which eliminates th... View full abstract»

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  • A novel approach to the design and implementation of a power electronics simulation software package

    Publication Year: 1997, Page(s):473 - 476
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    The novel approach is to interface Matlab and Simulink with a graphical user interface (GUI) developed in Visual C++. Object oriented programming is a new way of approaching the job of programming. Object oriented programming was used to create a separate class for each of the items and devices to be handled on the screen. This power electronics software can be used for designing, analyzing and si... View full abstract»

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  • System identification using Laguerre functions: simple examples

    Publication Year: 1997, Page(s):457 - 459
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    A system identification technique based on Laguerre series expansions of filtered input/output data is briefly summarized. Some simple examples are presented that demonstrate the power of the technique. The examples verify that the procedure works well for lightly damped (i.e. flexible) systems, for MIMO systems as well as SISO systems, and that non positive real systems pose no problems View full abstract»

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