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Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)

19-19 March 2002

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  • Proceedings of the Thirty-Fourth Southeastern Symposium on System Theory (Cat. No.02EX540)

    Publication Year: 2002
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    Freely Available from IEEE
  • An intelligent control system architecture for the control of patient-ventilator synchrony

    Publication Year: 2002, Page(s):46 - 50
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (421 KB) | HTML iconHTML

    Describes an intelligent control system architecture for the control of patient-ventilator synchrony. The long-term objective of the research is to develop an innovative intelligent system for controlling the process of mechanical ventilatory support for patients undergoing therapy in a hospital intensive care unit (ICU). The initial work focuses on the requirements for a medical-advisory/decision... View full abstract»

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  • Author's index

    Publication Year: 2002, Page(s):491 - 493
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    Freely Available from IEEE
  • A simple wide-band frequency independent quadrature phase shifter

    Publication Year: 2002, Page(s):188 - 191
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (374 KB) | HTML iconHTML

    Quadrature phase sensitive detectors (QPSD) are a very important part of phase measuring systems, such as communication receivers. These types of devices are able to measure phase angles between two periodic signals very accurately even in the presence of noise. In the QPSD system, there is a specific block that produces a 90° phase shift for a sinusoidal input signal. Current design approache... View full abstract»

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  • A proposal for measuring software productivity in a working environment

    Publication Year: 2002, Page(s):339 - 343
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (529 KB) | HTML iconHTML

    In the software industry one of the most central business factors is programmer productivity. While there is a major advantage in being able to measure and thus manage this most important factor, there is no widely accepted framework to measure software productivity. This document outlines a proposal for a study to attempt to measure software programmer productivity. The document proposes an outli... View full abstract»

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  • Helicopter hover control using linear adaptive control techniques

    Publication Year: 2002, Page(s):479 - 483
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (468 KB) | HTML iconHTML

    The dynamics of a helicopter are inherently unstable, highly nonlinear and exhibit strong cross-couplings between controls. This paper is concerned with the application of linear adaptive control techniques to stabilize helicopter hover maneuvers. Linear adaptive control techniques enable the de-coupling of multiple-input, multiple-output control problems into simpler single-input, single-Output c... View full abstract»

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  • A non-contact ammeter using phosphor thermometry

    Publication Year: 2002, Page(s):184 - 187
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (355 KB) | HTML iconHTML

    An experiment was conducted to study the feasibility of a remote (noncontact) ammeter based on phosphor thermometry. Elevated surface temperature (due to current) of a small transformer was measured by employing phosphor thermometry. A nearly linear relationship between surface temperature and current indicates potential use for this technique. Some modifications to the technique with the aim of r... View full abstract»

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  • Extraction of parallel hardware during C to VHDL translation

    Publication Year: 2002, Page(s):334 - 338
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB) | HTML iconHTML

    Translating C/C++ language into VHDL is an important step in synthesizing hardware from C/C++. However, there is no explicit facility in the general C/C++ language to declare concurrent parallel execution which is a critical characteristic of hardware systems. This paper presents the outline of a set of transformation algorithms. These algorithms are helpful in the process of extracting parallel h... View full abstract»

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  • Steering controller design using scale-model vehicles

    Publication Year: 2002, Page(s):476 - 478
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (291 KB) | HTML iconHTML

    A scale-model, experimental apparatus is developed to design and evaluate steering controller designs. The controller is designed using linear quadratic optimal control methods on a standard four-state vehicle model. The apparatus simulates the human driver using a scale-model vehicle, a treadmill, and a vision system. View full abstract»

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  • Predicting the elasto-plastic response of an arc-weld process using artificial neural networks

    Publication Year: 2002, Page(s):440 - 444
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (553 KB) | HTML iconHTML

    The quality of a steel arc-welded joint greatly depends on the parameters of the welding process used. Given a particular geometry of the weld, the corresponding welding materials and the restraints used to fix the parts, the feed rate, the speed and the heat input play a significant role in the thermal and elasto-plastic response of the plates. Residual stresses and overall distortions are always... View full abstract»

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  • Methodology for the development of an electronic medical record

    Publication Year: 2002, Page(s):406 - 411
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (695 KB) | HTML iconHTML

    Electronic medical records (EMRs) and computer based patient records (CPRs) hold the opportunity to improve patient care, reduce costs, and facilitate research in medicine. Far too often, however, healthcare organizations and practitioners find that these systems are too costly, lack essential features, or work improperly for their setting. As the result, many decide to develop their own EMR or CP... View full abstract»

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  • Inductive load current harmonic injection

    Publication Year: 2002, Page(s):307 - 310
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (411 KB) | HTML iconHTML

    Induction motor audible noise can be related to the frequency content present in the stator winding currents. These currents produce time varying air gap fluxes which in turn produce exciting forces resulting in vibrations in the mechanical structure. By adding harmonics into the winding currents, additional frequencies can be added to the air gap flux and audible noise. If the additional frequenc... View full abstract»

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  • Analysis, simulation and testing of the σ-CLL current-source resonant inverter

    Publication Year: 2002, Page(s):179 - 183
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (362 KB) | HTML iconHTML

    High-frequency resonant power converters are an attractive choice for high power density applications. Until recently, only resonant converters with 2 energy-storage elements have been studied and used for applications. However, some of the drawbacks of this class of converters (including poor load regulation, discontinuous mode operation and poor transient response) can be overcome by the judicio... View full abstract»

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  • A procedure for designing a translator from C to VHDL

    Publication Year: 2002, Page(s):329 - 333
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB) | HTML iconHTML

    Hardware/software codesign can be defined as the unification of separate hardware and software paths towards the development of a system as a whole. One of the prominent aspects of a codesign process is C to VHDL translation. This paper describes a procedure to design a translator from C to VHDL using transformation algorithms, which facilitate the process of C to VHDL translation. In particular, ... View full abstract»

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  • Increasing the efficiency of the use of wavelet-like finite element basis functions

    Publication Year: 2002, Page(s):142 - 146
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB) | HTML iconHTML

    In this paper, some of the advantages and disadvantages of the use of wavelet-like basis functions are discussed. Two modifications for mitigating some of the disadvantages are considered. Numerical results obtained using these modifications are presented. View full abstract»

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  • Communication delays in wide area measurement systems

    Publication Year: 2002, Page(s):118 - 122
    Cited by:  Papers (103)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (577 KB) | HTML iconHTML

    This paper provides a tutorial introduction to phasor measurement units (PMU) when applied in a power system environment, provides an overview of communication alternatives for wide area measurement systems (WAMS), and computes the delay budget for each type of communication link. The goal of this study is to provide data regarding the communication delay that can be incorporated into the analysis... View full abstract»

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  • Augmented proportional navigation guidance using subspace-stabilization

    Publication Year: 2002, Page(s):471 - 475
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (473 KB) | HTML iconHTML

    The paper is concerned with the application of subspace-stabilization control theory to the missile guidance problem. In particular, the system error-state vector is stabilized to a certain subspace of the error state-space such that zero predicted miss-distance is achieved. The proposed control technique is related to the classical proportional navigation and augmented proportional navigation gui... View full abstract»

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  • Partial binary decision diagrams

    Publication Year: 2002, Page(s):422 - 425
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (345 KB) | HTML iconHTML

    Decision diagrams provide compact representations for discrete functions. There are some functions for which binary decision diagrams reach exponential size. Presented here is a method of representing Boolean functions as multiple partial decision diagrams. View full abstract»

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  • Intelligent control of cupola furnaces

    Publication Year: 2002, Page(s):435 - 439
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (504 KB) | HTML iconHTML

    The objective of this research is to improve the efficiency of the cupola operation in the presence of desired output changes. This is achieved by developing an automatic controller for the cupola furnace. A controller was previously developed that provided tight control over the output parameters of the cupola under little or no desired change. The controller considers physical and practical limi... View full abstract»

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  • Modeling of epicardial signals in the human body

    Publication Year: 2002, Page(s):401 - 405
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (521 KB) | HTML iconHTML

    Epicardial signals are time-varying electric potentials on the outer surface of the heart that originate from a signal inside the heart to trigger the heartbeat. Diagnosis of epicardial signals by medical personnel reveals the health of the heart. Modeling of these signals is important in the inverse problem of electrocardiography. In this paper, we present an inverse technique for computing epica... View full abstract»

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  • Bang-bang control of double integrator systems

    Publication Year: 2002, Page(s):275 - 278
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB) | HTML iconHTML

    A bang-bang control algorithm is presented for controlling double integrator systems. This algorithm requires measurements of position only. The performance and robustness of the algorithm is investigated using numerical simulation and hardware implementation. View full abstract»

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  • Decentralized load frequency control in a deregulated environment using disturbance accommodation control theory

    Publication Year: 2002, Page(s):302 - 306
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (394 KB) | HTML iconHTML

    In this paper, a decentralized controller is proposed for the load frequency control problem in a deregulated environment. The deregulation scenario considered here assumes that generating units in each area supply regulated power according to their energy contracts. Disturbance accommodating controllers (DAC) are designed which are decentralized controllers using frequency and tie-line power meas... View full abstract»

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  • A low power intelligent video-processing sensor

    Publication Year: 2002, Page(s):176 - 178
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (409 KB) | HTML iconHTML

    Power efficient video signal processing is very important in the fields of intelligent robots, self guided vehicles and security systems. We have developed a low power intelligent video imaging sensor (IVIS), based on the Kodak CMOS Digital Image Sensor KAC-0311 with a resolution of 640×480 pixels. The image sensor is controlled by the low power Texas Instruments MSP430F149 microcontroller. ... View full abstract»

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  • Survey of the counterflow pipeline processor architectures

    Publication Year: 2002, Page(s):1 - 5
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (557 KB) | HTML iconHTML

    The Counterflow Pipeline Processor (CFPP) Architecture is a RISC-based pipeline processor. It was proposed in 1994 as an asynchronous processor architecture. Recently, researches have implemented it as a synchronous processor architecture and later improved its design in terms of speed and performance by reducing average execution latency of instructions and minimizing pipeline stalling. In this p... View full abstract»

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  • Electronic scanning of sonar beam from a phased array of acoustic transducers controlled through programmable digital delay lines

    Publication Year: 2002, Page(s):366 - 370
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (369 KB) | HTML iconHTML

    Electronic scanning of the beam with phased arrays is faster compared to rotating antennas, and with the phased arrays kept stationery, the beam could be shifted in a manner as desired by the system by controlling the phases. By and large, delay lines are used for producing the necessary phase shifts for the array elements. The use of digital delay lines improve further the rate of scanning and av... View full abstract»

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