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Southeastcon '94. Creative Technology Transfer - A Global Affair., Proceedings of the 1994 IEEE

10-13 April 1994

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Displaying Results 1 - 25 of 112
  • Proceedings of SOUTHEASTCON '94

    Publication Year: 1994
    Request permission for commercial reuse | PDF file iconPDF (30 KB)
    Freely Available from IEEE
  • Rapid prototyping and performance evaluation of recoded multipliers using FPGAs

    Publication Year: 1994, Page(s):236 - 240
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (496 KB)

    High speed recoded parallel multipliers constitute an affordable improvement compared to the serial-parallel add-shift designs. We present in this paper, a detailed discussion of the development of these recoded multiplier algorithms and their FPGA implementations. The various issues involved in the design process are highlighted. The cost-performance comparison of the various recoded multipliers ... View full abstract»

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  • Nonparametric approach to reliability analysis

    Publication Year: 1994, Page(s):231 - 235
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    The object of this paper is to propose a developed nonparametric statistical procedure as an alternative to the classical approach for reliability analysis. We will propose an effective distribution-free procedure to characterize the probabilistic behavior of the failure data, which cannot be identified as those from a classical probability distribution. In addition to offering the computational a... View full abstract»

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  • An investigation of the variation of leakage resistance of electrical insulating materials used on spacecraft power systems

    Publication Year: 1994, Page(s):228 - 230
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (184 KB)

    Spacecraft power systems are subjected to extremely hostile environments, due to the action of space plasma, temperature cycling and atomic oxygen. Literature indicates that the resistivity is sensitive to ambient temperature and pressure. The resistivity is an index which can indicate the performance of space based electrical systems. Hence, there is a need for experiments to determine the variat... View full abstract»

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  • Evaluation of load management program in South Florida

    Publication Year: 1994, Page(s):225 - 227
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    The basic responsibility of the electric utility industry is to supply reliable, efficient and economical electric service to the customer. However, meeting these responsibilities has become increasingly complex because of the new technical, economical, environmental, political, and social considerations. The effect of these considerations/constraints has increased the uncertainty in the planning ... View full abstract»

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  • Adaptive control of robot manipulators in task space

    Publication Year: 1994, Page(s):147 - 151
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    This paper considers adaptive control of robot manipulators in task space. An adaptive sliding-mode control scheme is combined with nonlinear integral control to derive a globally stable adaptive control algorithm. With this algorithm, the robustness is guaranteed by the sliding-mode control law and the chattering associated with sliding mode control is eliminated by the integral control law. With... View full abstract»

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  • A new method for unit ramp rate processing in Lagrangian relaxation unit commitment

    Publication Year: 1994, Page(s):222 - 224
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    This paper presents a Lagrangian relaxation based technique for solving the power system thermal unit commitment problem. The specific technique described in this paper focuses on finding a feasible commitment, then attempting to improve on the optimality of the solution. A new method for processing ramp rate constraints is also introduced. The algorithm has been implemented on a large scale power... View full abstract»

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  • Trajectory control of manipulators using adaptive sliding mode control

    Publication Year: 1994, Page(s):142 - 146
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    Considers an adaptive control algorithm for robot manipulators. The presented algorithm uses an adaptive sliding mode control law to ensure robustness. The proposed algorithms eliminate the requirement for inversion of the inertia matrix, the requirement for measurement of joint acceleration, and the requirement for calculation of a regressor. Computer simulation results show good properties of th... View full abstract»

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  • I/O performance analysis for network file servers

    Publication Year: 1994, Page(s):386 - 392
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (576 KB)

    The paper presents a performance simulation analysis of different disk storage techniques in typical network file server environments, based on personal computers (PCs). One of the key issues investigated is whether a disk array can outperform a group of independent, non-striped disks of the same type and data capacity View full abstract»

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  • Frame synchronization for OOK optical systems

    Publication Year: 1994, Page(s):55 - 59
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    The critical problem of locating a periodically embedded frame synchronization pattern in random data is considered for direct-detection on-off keying (OOK) optical systems. Results of simulation studies on several synchronization schemes are presented. Performance results of comparisons with the maximum-likelihood (ML) estimate rule over a wide range of signal-to noise ratios (SNR) are provided. ... View full abstract»

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  • Design and optimization of a new actively compensated filter

    Publication Year: 1994, Page(s):273 - 277
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    The paper presents a new actively compensated filter, which is a modified form of an existing active filter. Design guidelines are developed to eliminate its first order sensitivity and to reduce the second order sensitivity through optimization. PSPICE simulations and experimental results are provided to prove the theoretical predictions. Simulation and experimental results also show that, by cho... View full abstract»

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  • An enhanced assessment protocol to support the dynamic bandwidth control capabilities in DQDB MANs

    Publication Year: 1994, Page(s):204 - 208
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (552 KB)

    An enhanced assessment protocol (EAP) is proposed for DQDB MANs. The proposed scheme comprises of two independent assessment cycles. The DANT cycles continuously update time dependent network information. The perception cycles estimate the required change in the perception of the node population in the network, to serve the existing demand pattern better and supports dynamic bandwidth control View full abstract»

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  • Comparison of measured and calculated CFO voltages for 115 kV and 230 kV substations

    Publication Year: 1994, Page(s):285 - 287
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (276 KB)

    This paper presents both experimental results and calculations of CFO voltages for 115 kV and 230 kV substations. Several different methods are used to calculate the CFO voltage. The accuracy of specific equations and a graphical method used for the evaluation of CFO voltages for HV substations are discussed. The paper concludes with a discussion and analysis of equations used for the estimation o... View full abstract»

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  • Application of PLCs for nuclear plant emergency load sequencers

    Publication Year: 1994, Page(s):217 - 221
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (420 KB)

    To alleviate operational problems and improve reliability, Florida Power & Light Company (FPL) initiated an electrical enhancement project which implemented modifications to its Turkey Point nuclear power plant 4.16 kV emergency power supply and distribution system (EPS). Each nuclear unit at the Turkey Point plant is a 760 MWe Westinghouse pressurized water reactor. The original design featur... View full abstract»

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  • Neural networks as robot arm manipulator controller

    Publication Year: 1994, Page(s):139 - 141
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (204 KB)

    Traditional controllers used in robot arm manipulators are complex, nonadaptive, and somewhat slow. Several researchers have developed approaches that use neural networks as controllers. This paper includes a theoretical discussion and design details for a robot arm manipulator controller using a neural network trained by feedback error learning, originally proposed by Kawato. The scheme and techn... View full abstract»

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  • DSP controller for a permanent magnet synchronous motor drive

    Publication Year: 1994, Page(s):413 - 417
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (388 KB)

    The drives industry is steadily moving towards digital implementation of controllers for variable speed drives. This paper discusses the implementation of a DSP controller for controlling a permanent magnet synchronous motor (PMSM). It discusses the theory of operation of a PMSM drive and shows how a DSP controller has been designed to perform the vector and current control functions. The design c... View full abstract»

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  • Comparison of commercially available FPGA architectures

    Publication Year: 1994, Page(s):383 - 385
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    Field Programmable gate arrays (FPGAs) are erasable, programmable PLDs and structurally, can be divided into three classes: symmetrical arrays, row-based, and hierarchical PLDs. The architecture, interconnection structure, and advantages and limitations of each class are discussed and a comparison between these classes is made. As an example of each class, FPGAs from Xilinx, Altera, and Actel are ... View full abstract»

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  • Finite wordlength effects in fixed-point 2-D digital filters

    Publication Year: 1994, Page(s):16 - 20
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    The stability of 2D digital filters implemented with two's complement quantization is investigated. The difference equation model is considered for the following cases: quantization after each product, and quantization after a complete sum of products. For both cases, sufficient conditions are established for asymptotic stability. The 2-D state-space Roesser's model is also considered under two's ... View full abstract»

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  • On the computationally efficient low roundoff noise realizations of 2-D digital systems

    Publication Year: 1994, Page(s):101 - 105
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    Based on the work of Smith and Bomar (1988), an alterative state-space direct form structure of 2D digital systems is presented in this paper. Some properties of the covariance matrix K and the noise matrix W of the direct form structures are discussed. An example is given to demonstrate the differences between these two direct form structures. The corresponding optimized structures computed from ... View full abstract»

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  • Modeling three-dimensional acoustic waves in the ocean

    Publication Year: 1994, Page(s):455 - 459
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (212 KB)

    Conventional three-dimensional ocean acoustic modeling ignores Earth flattening, while this effect, as has been shown by Munk et. al. (J. Phys. Oceanogr, 18, 1988, 1876-1898), can not be ignored for long-range transmissions. To take into account the Earth flattening, a new three-dimensional wave equation is derived, in the paper, in terms of a new coordinate system: the ellipsoidal coordinates (ge... View full abstract»

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  • Sensitivity analysis of induction motor parameters

    Publication Year: 1994, Page(s):50 - 54
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    The process of induction motor manufacturing is not been completely controllable. Then induction motor parameters are obtained from manufacturers, their validity is doubtful since they might have been based on typical parameters for a similar frame size motor. The variation of parameters also implies a variation in the performance characteristics of the motor. In order to identify parameters which... View full abstract»

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  • Design and implementation of position feedback controllers for an X-Y table

    Publication Year: 1994, Page(s):324 - 328
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (288 KB)

    A circuit was designed for feedback modification of a computer controlled stepping motor positioning system. Instrumentation amplifiers were used to obtain the motor phase currents. The sum of the amplifier outputs was applied to an analog-to-digital converter. The converter data was multiplexed to a computer's parallel port inputs. Experiments were performed to find the correspondence between tor... View full abstract»

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  • An intelligent vision system for motion detection using a neural network

    Publication Year: 1994, Page(s):362 - 366
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (364 KB)

    This paper presents a neural network-based motion detector system of an object. The system consists of two components: a preprocessing and data compression part and a decision making subsystem that provides information about the motion of an object. A neural network is used as a decision making subsystem. The network is trained with a general object motion and tested on a specific unseen motion by... View full abstract»

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  • Visualization of two and three dimensional antenna patterns

    Publication Year: 1994, Page(s):270 - 272
    Cited by:  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (260 KB)

    An educational software package (APV) is developed for the analysis and design for different types of antenna and antenna arrays. The software is interactive and provides three and two dimensional views for the computed far field patterns. Different plane cuts, in the three dimensional representation are immediately accessible after generating the far field pattern. The two dimensional patterns ca... View full abstract»

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  • Statistical circuit simulation and yield analysis for IC's

    Publication Year: 1994, Page(s):128 - 130
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    The importance of running statistically based process, device and circuit simulations is becoming critical to IC design for manufacturing techniques. Thus arises the need for software-based packages that couple statistical techniques to conventional simulators. Monte Carlo techniques have been implemented in various such packages, but the nature of Monte Carlo designs often lead to time-consuming ... View full abstract»

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