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Proceedings of the Twenty-Seventh Southeastern Symposium on System Theory

12-14 March 1995

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  • Proceedings of the Twenty-Seventh Southeastern Symposium on System Theory

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (476 KB)
    Freely Available from IEEE
  • High-performance disk I/O in a bus-based system

    Publication Year: 1995, Page(s):231 - 235
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (436 KB)

    Processor and memory speeds continue to increase dramatically. The large gap in access times between memories and disk storage devices results in limiting the overall system performance. A major contribution to the slow response of storage devices are mechanical latencies arising from disk platter rotation and read/write head actuators, but other limitations are a result of system component intera... View full abstract»

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  • A systematic approach for selecting practical moduli sets for residue number systems

    Publication Year: 1995, Page(s):445 - 449
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    The residue number system (RNS) is a useful tool for digital signal processing (DSP) since it can support parallel, carry free, high speed arithmetic. An RNS is defined by a set of relatively prime integers called the moduli set. The most important consideration when designing RNS systems is the choice of the moduli set. In order to maintain simple arithmetic, several example cases of moduli sets ... View full abstract»

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  • A method of compensator design for discrete systems which bounds both the closed-loop system and compensator eigenvalues

    Publication Year: 1995, Page(s):238 - 242
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    A method for designing compensators for discrete systems is presented. This method gives upper bounds on the maximum eigenvalues of the compensator and closed loop system by simultaneously minimizing the maximum singular values of the system matrices of the controller (A-BF), observer (A-LC) and compensator (A-BF-LC+BGC) for a given realization (A,B,C). However, the fact that the maximum singular ... View full abstract»

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  • A new approach for line transients analysis

    Publication Year: 1995, Page(s):36 - 40
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    The paper presents an approach to the calculation of electromagnetic transients on transmission lines. The proposed method permits significant computer time saving by avoiding numerical difficulties such as convolution integration and FFT. An original procedure based on Laplace Transform, travelling waves and the principle of superposition is presented, providing relatively simple analytical expre... View full abstract»

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  • The development of FAX broadcasting system

    Publication Year: 1995, Page(s):212 - 215
    Cited by:  Papers (1)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    A high density fax broadcasting system is designed and constructed using off-the-shelf hardware and custom software to perform parallel fax transmission. It has the retransmitting capability to fax to devices that were unresponsive because of previous transmission failures. The current design is for 24 analog channels or 24 digital channels on a T1 line. The total number of network stations can in... View full abstract»

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  • Fine-grain simulation of the ANS project network

    Publication Year: 1995, Page(s):525 - 529
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    The paper provides an overview of a modeling and simulation study, performed for the Project Network of the Advanced Neutron Source (ANS/PN), a new research facility being designed under the auspices of the Oak Ridge National Laboratory. After an introduction to computer network simulation in general and the Block-Oriented Network Simulator (BONeS) fine-grain simulator in particular, the prelimina... View full abstract»

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  • Generalizations of Rent's rule

    Publication Year: 1995, Page(s):370 - 374
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    This paper describes some new results with respect to the classic problem of the component-to-pin ratio. Generalizations of Rent's rule, providing greater accuracy and extending the domain of applicability are presented. The two weaknesses of Rent's rule-the limited range on the number of components in a block and on the Rent exponent-are eliminated. The resulting generalized rules are based on pa... View full abstract»

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  • Sound demonstration software for teaching DSP

    Publication Year: 1995, Page(s):450 - 454
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    The purpose of the paper is to demonstrate how teaching a few key concepts in digital signal processing (DSP) can be made easier and more effective by exploiting the sound capabilities of today's multimedia computer systems, such as the PC. By using DSP concepts, the audible difference in sound quality of a music clip when downsampled with and without an anti aliasing filter can be explained to th... View full abstract»

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  • Optimal eigenstructure assignment using closed loop controllability conditions by output feedback

    Publication Year: 1995, Page(s):243 - 246
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (268 KB)

    The design procedure of robust eigenstructure assignment by output feedback is formulated as a nonlinear optimization problem. Nonlinear optimization techniques are combined with output feedback eigenstructure assignment to produce optimal system design. Necessary and sufficient conditions for the assignment of closed loop eigenvalues and their corresponding reciprocal eigenvectors by output feedb... View full abstract»

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  • Application of pricing information of transmission services in an open access environment

    Publication Year: 1995, Page(s):41 - 44
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    This paper discusses issues related to open transmission access. These issues are: stages of evolution from regulation to deregulation; recovery of capital investment; collection of network expansion investment; sharing of contingency cost; and sharing of benefits. These issues are pertinent not only to economics but also to the security of power systems operation in an open transmission access en... View full abstract»

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  • Diagnosis of convoluting systems by space-time compression

    Publication Year: 1995, Page(s):216 - 220
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (196 KB)

    The paper investigates fault detection in butterfly networks by considering a space time compression technique proposed by M.G. Karpovsky, L.B. Levitin and E.S. Vainstein (1990). The method of the paper is to show that the time compression technique works for the FFT butterfly network. Reduced matrices for the case when the upper vertex of the tree is absent is also investigated. Details and examp... View full abstract»

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  • Obstacles to achieving high-performance servo-tracking using conventional digital-controller designs

    Publication Year: 1995, Page(s):429 - 434
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    Effective real time control decisions in servo tracking problems require maximum use of real time information about the current dynamic behavior of uncertain servo commands, plant disturbances and parameter perturbation effects. That information is embodied in the real time measurements of servo commands and plant outputs but is not explicitly identified and utilized in conventionally designed dig... View full abstract»

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  • Control of nonlinear systems via dynamic neural network control (DNNC): adaptive control, constraint handling, and extension to MIMO case

    Publication Year: 1995, Page(s):509 - 513
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    DNNC has been successfully applied to nonisothermal CSTR with time varying parameters including activation energy and heat transfer coefficient. Thus, the objectives of the paper are: 1. To study the constraint handling properties of DNNC, 2. To extend SISO-DNNC to MIMO-DNNC, 3. To study the on-line adaptation properties of DNNC View full abstract»

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  • Electromagnetic scattering from periodically deformed cylinders and cylindrical shells

    Publication Year: 1995, Page(s):320 - 324
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (280 KB)

    The paper investigates the scattering of electromagnetic waves from periodically deformed circular cylinders and cylindrical shells. These scatterers are constructed from a set of parallel circular cylinders of small radii. The circular cylinders are made of perfectly conducting materials, homogeneous dielectric materials, or combinations. The recently developed boundary value point matching techn... View full abstract»

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  • Recognizing patterns of errors in scientific data

    Publication Year: 1995, Page(s):97 - 101
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    Investigates the application of machine learning techniques to the task of identifying and clustering errors in scientific data. A numerical model called WAM (WAve Model) is used by the Navy to predict significant wave height (SWH) based on wind speed. Comparisons of the WAM predictions and SWH calculated from altimetry measurements have indicated that the WAM predictions are inaccurate in some si... View full abstract»

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  • A new generation of digital VLSI CAD tools based on probability

    Publication Year: 1995, Page(s):348 - 352
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    This paper discloses the importance of the probabilistic approach in a wide variety of CAD tools specially when dealing with large digital designs. It explains when and how to use probability efficiently by computing useful information's on internal signals out of probabilistic information's on the inputs of the circuit. Drawbacks of such approach, such as the signal's correlation problem, are als... View full abstract»

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  • Performance and area estimation based on VHDL descriptions and functional unit database

    Publication Year: 1995, Page(s):379 - 383
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    A new performance and area estimation approach is developed and presented in this paper. The method adopts a bottom-up strategy, where smaller constructs in a behavioral description are analyzed first, and larger constructs will be analyzed based on the results of smaller ones. The algorithms are developed to be applied directly, on VHDL behavioral descriptions. A functional unit database is built... View full abstract»

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  • Identification of electro-thermal model parameters for metal-oxide surge arresters using auto regressive technics [sic]

    Publication Year: 1995, Page(s):2 - 6
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (340 KB)

    Electrical system modeling and parameter identification to represent the thermal behavior of metal oxide (ZnO) surge arresters is investigated by means of the auto-regressive models ARX and ARMAX and the inputs and outputs to and from the arrester, which are measured during laboratory experiments. These experiments show the real thermal behavior of the arrester when submitted to an electrical stim... View full abstract»

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  • Improving VCS with filtering

    Publication Year: 1995, Page(s):150 - 153
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (172 KB)

    A technique is presented for improving the variable structure controller. This new scheme is a combination of classical variable structure system and moving average filter. The methodology overcomes the problem of chattering while maintaining fast response, high accuracy and robustness of the variable structure systems. A nonlinear system is used for illustration. Another simple scheme of using lo... View full abstract»

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  • Spread and folded architectures for FFT

    Publication Year: 1995, Page(s):456 - 459
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    Computing a Fourier transform with a parallel architecture of serial operators needs a lot of implementation area to obtain the high performances promised with this method. Allocating processors to each step of the computation or computing only one step at the same time is one of the problems to solve. The degree of integration of up-to-date chips promises a realistic implementation of such soluti... View full abstract»

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  • Recurrent misconceptions in sampled-data/digital-control textbooks. II

    Publication Year: 1995, Page(s):336 - 341
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (488 KB)

    For pt.I, see Proc. 17th Southeastern Symposium on System Theory, p.188 (1985). This paper is a continuation of an earlier paper and is concerned with pointing-out, correcting and illustrating by an example, certain recurring misconceptions, errors, oversights, etc. That commonly appear in sampled-data/digital-control textbooks. In the present paper attention is focused on the correction of (i) an... View full abstract»

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  • Missile autopilot design using the extended-mean assignment control. I. Stabilization

    Publication Year: 1995, Page(s):247 - 251
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    The paper presents a missile autopilot design using a recently developed extended mean assignment (EMA) control technique for linear time varying (LTV) systems. The EMA control technique is based on a new series D-eigenvalue (SD eigenvalue) concept in a way similar to the conventional pole placement design for linear time invariant (LTI) systems. The autopilot is to control the nonlinear, time var... View full abstract»

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  • Implications of frequency bias settings on AGC

    Publication Year: 1995, Page(s):83 - 86
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    This paper describes the effects the frequency bias setting, B, has on the operation of automatic generation control systems that are operating with tie-line frequency bias control. Since B can not be continuously measured, it must be estimated annually. The closer the frequency bias setting matches the actual control area's frequency response characteristic, the better AGC will perform. In order ... View full abstract»

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  • Standards-based hybrid probe instrumentation for multiprocessor computing systems

    Publication Year: 1995, Page(s):114 - 117
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    Hybrid performance monitoring provides an unobtrusive and relatively inexpensive method of evaluating and tuning parallel hardware and software performance. In this paper, the design of standards-based hybrid performance monitoring hardware is examined for physical nodes containing a cluster of four processors. The design incorporates a NIST developed MultiKron probe acquisition chip and an interf... View full abstract»

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