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
  • A comparison of native ATM-multicast to IP-multicast with emphasis on mapping between the two

    Publication Year: 1995, Page(s):189 - 193
    Cited by:  Patents (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    Given the growing use of ATM, there is great interest in migrating the protocols which run on today's common networking technologies to ATM. There is particular interest in running the IP protocol on top of ATM. This provides an easy bridge between current networking protocols and applications and future ATM-only protocols and applications One of the move recent IP protocols, IP-multicast, has bee... View full abstract»

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  • Modeling of ground test facilities using the EASY/ROCETS dynamic fluid flow simulation system

    Publication Year: 1995, Page(s):196 - 200
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    Special purpose simulation computer code development for analysis of dynamic fluid flow systems is a complex and time-consuming task. One alternating is the use of a simulation package entitled EASY/ROCETS, which is a concatenation of two previously existing packages along with several extensions designed for the EASY/ROCETS package. The capabilities of the package in its present form are discusse... View full abstract»

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  • 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 comparative study of neural network and regression analysis as modeling tools

    Publication Year: 1995, Page(s):202 - 205
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    The paper uses a real world example to highlight the differences between neural network and regression analysis as competing modeling tools. The paper also discusses a set of issues that need to be resolved to enhance the capabilities of neural networks as a modeling tool 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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  • Radar signal detection via ARMA modeling

    Publication Year: 1995, Page(s):436 - 440
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    A phase shift keyed (PSK) spread spectrum radar signal is analyzed using autoregressive moving average (ARMA) spectral estimation techniques. In general, the ARMA model achieves better PSD estimates and higher resolution than the traditional techniques. Results for simulated spread spectrum radar signals of various lengths in additive white Gaussian noise are presented and a comparison with tradit... 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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  • Formal specification of managed objects in an object-oriented network management system using Object-Z

    Publication Year: 1995, Page(s):206 - 210
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    The specification of managed objects is crucial for the successful design of network management systems. However, a weakness in many current object-oriented methodologies is the absence of formal description of the behavioural aspects of such objects. It is shown that Object-Z can be used to provide readable, precise and extensible specifications which furthermore can be derived quite easily from ... View full abstract»

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  • Development and evaluation of fuzzy logic controller for vehicle suspension systems

    Publication Year: 1995, Page(s):295 - 299
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (232 KB)

    A suspension system has been modeled as a two-degree-of-freedom to represent passive, active, and semi-active suspension systems. Fuzzy logic based controllers for semi-active and active suspension systems were proposed. The proposed system have been simulated and evaluated using three road profiles. The results are encouraging and show that fuzzy logic based suspension systems provide better road... View full abstract»

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  • Wavelet packet modulation: a generalized method for orthogonally multiplexed communications

    Publication Year: 1995, Page(s):392 - 396
    Cited by:  Papers (29)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    Building on recently introduced multidimensional signalling techniques, a multirate wavelet based modulation format is presented which can utilize existing channels designed for conventional QAM. Customizable wavelet packet basis functions are employed as novel pulse shapes upon which independent QAM data at lower rates are placed. The advantages include dimensionality in both time and frequency f... 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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  • Phase approximation via Remez algorithm

    Publication Year: 1995, Page(s):441 - 444
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (228 KB)

    We consider an important aspect of rational modeling: phase approximation. An algorithm is developed to achieving optimal Chebyshev error where Remez algorithm is proved to be effective. Its applications to the design of recursive digital filters with linear phase are investigated 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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  • 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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  • Developing expert systems technology in a computer integrated manufacturing environment

    Publication Year: 1995, Page(s):300 - 304
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    Global competition is leading many corporations to differentiate themselves by the quality of their service and support to customers, in addition to product quality. Greater customer satisfaction results in better customer retention. One such developed application demonstrates how expert systems technology has been used to empower marketing employees to quickly answer a customer's quote for a prod... View full abstract»

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  • Novell NetWare multimedia communication system using Microsoft Windows

    Publication Year: 1995, Page(s):397 - 401
    Cited by:  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    A multimedia communication system combines many of the information resources such as text, images, data, fax, video and audio signals using the networking power of existing network operating systems (NOS). The Novell NetWare and Microsoft Windows facilities have been widely used in many areas of client-server networking. This research effort effectively combines the merits of the Novell NetWare 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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  • 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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  • 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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  • 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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  • 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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  • Simulation of the brushless DC machine

    Publication Year: 1995, Page(s):18 - 22
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (272 KB)

    Research efforts on the brushless DC machine (BDCM) have produced a computer simulation model of the machine applicable for analysis of the machine during fault conditions. Several failure modes have been studied using this simulation technique. Modeling the motor during flux weakening, bearing failure, armature winding open circuiting, and armature winding short circuiting along with the operatio... View full abstract»

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  • A neural network based vehicle detection and tracking system

    Publication Year: 1995, Page(s):279 - 283
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (372 KB)

    Recent research has shown that feedforward neural networks can be trained to monitor vehicles on the roads (D. Bullock et al., 1993). A properly trained network should be able to recognize vehicles in the images it has never been exposed to. The paper discusses the development of such a neural network based detection and tracking model. The detection and tracking model was constructed on a PC usin... 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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