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IEEE International Conference on Multimedia and Expo (ICME)

作者： Shu-Ching Chen Mei-Ling Shyu Cheng-Cui Zhang R.L. Kashyap Distributed Multimedia Information System Laboratory School of Computer Science Florida International University Miami FL USA Department of Electrical and Computer Engineering University of Miami Coral Gables FL USA School of Electrical and Computer Engineering Purdue University West Lafayette IN USA

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Stability and performance analysis of an enhanced hybrid fuzzy P+ID controller

Stability and performance analysis of an enhanced hybrid fuz...

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American Control Conference (ACC)

作者： Wei Li Xiaoguang Chang J. Farrell Department of Electrical Engineering University of California Riverside CA USA National Laboratory for Intelligent System and Technology Department of Computer Science and Technology Tsinghua University Beijing China

In order to improve control performance in both dynamic transient and steady-state periods, this paper presents an enhanced hybrid FUZZY P+ID controller that is constructed by using an incremental fuzzy logic controller with twenty-five rules in place of the proportional term in a conventional PID controller. The enhanced FUZZY P+ID controller has only two additional parameters to be tuned based on its PID counterpart. The analysis shows that the stability behavior of a control system remains unchanged after replacing the PID controller by the FUZZY P+ID controller. Numerical simulation results of a nonlinear system for both step and tracking control demonstrate the superior control performance of the FUZZY P+ID controller.

关键词： Stability analysis Performance analysis Proportional control Fuzzy control Three-term control Control systems Nonlinear control systems Fuzzy logic Fuzzy systems Steady-state

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Design approach for biomedical smart sensors

Design approach for biomedical smart sensors

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Midwest Symposium on Circuits and systems (MWSCAS)

作者： R.L. Ewing H.S. Abdel-Aty-Zohdy Air Force Research Laboratory Inforamation Directorate Adjunct Professor Department of Electrical and Computer Engineering Air Force Institute of Technology USA Microelectronics System Design Laboratory Department of Electrical and Systems Engineering Oakland University Rochester MI USA

ISBN: (纸本)078037150X

system-on-Chip solid state circuits that sense, receive, transmit, and process signals are the sensors, or eyes and ears, of the medical field of the millennium. The goal and design of the system-on-Chip (SOC) program for industry will be to provide affordable, reproducible, and reliable front-end instrumentation, components and subsystems for medical systems. To process/store/analyze the signals acquired from these medical sensors, analog/digital systems are used to provide data fusion and information extraction. These biomedical smart sensors cover the hybrid domains of mixed-technology (electrical, mechanical, optical, thermal, biochemical) and mixed-concept (electrical, control, digital signal processing). These significant domain design differences impose robust design challenges for medical sensor technology.

关键词： Intelligent sensors Biosensors system-on-a-chip Signal processing Sensor systems Mechanical sensors Solid state circuits Eyes Ear Instruments

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In order issue out-of-order execution floating-point coprocessor for CalmRISC32

In order issue out-of-order execution floating-point coproce...

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computer Arithmetic (ARITH)

作者： Cheol-Ho Jeong Woo-Chan Park Tack-Don Han Sang-Woo Kim Moon-Key Lee Media System Laboratory Department of Computer Science Yonsei University Seoul South Korea MCU Team System LSI Division Samsung Electronics Company Limited Yongin si South Korea VLSI and CAD Laboratory Department of Electrical Engineering Yonsei University Seoul South Korea

ISBN: (纸本)0769511503

The CalmRISC32 FPU (Floating-Point Unit) is a RISC coprocessor for embedded system applications. It supports IEEE-754 standard single precision floating-point addition, floating-point subtraction, floating-point multiplication, floating-point division, format conversion, comparison, rounding, load, store, etc. It also supports four rounding modes, and precise exception. It can execute and complete instructions out of order, if constraints such as data dependency, resource conflict, and exception prediction are resolved. Standard cell-base design techniques were used to reduce design time and expense. The first prototype operated at approximately 70 MHz with the worst-case delay in gate level simulation.

关键词： Out of order Coprocessors Pipelines Embedded system Delay Laboratories Microprocessors Floating-point arithmetic Hardware Large scale integration

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Consequent pole permanent magnet machine with field weakening capability

Consequent pole permanent magnet machine with field weakenin...

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IEEE International Conference on Electric Machines and Drives (IEMDC)

作者： J.A. Tapia F. Leonardi T.A. Lipo Department of Electrical Engineering University of Concepcion Concepcion Chile Vehicle Electronic System Department Ford Research Laboratory Dearborn MI USA Department of Electrical and Computer Engineering University of Wisconsin Madison Madison WI USA

ISBN: (纸本)0780370910

The electromagnetic design procedure and laboratory test results are presented in this paper for a consequent pole permanent machine (CPPM) with field weakening capability. Due to its particular configuration, the CPPM allows one to easily control the air-gap flux in a wide range so that the speed range of the machine is increased. Two components of the flux: one-almost constant-coming from the permanent magnet located in the rotor surface of the machine, and the other-variable-coming from a field winding located in the middle of the stator, converge in the air-gap, characterizing the level of excitation of the machine. Preliminary 3D finite element analysis results establish that with 10% of the phase MMF, it is possible to vary the flux in a wide range. A 3 kW, 1000 to 3000 RPM velocity range, 8 pole and 32 AC volt generator using this configuration is tested to verify the flux control capability of this structure.

关键词： Permanent magnet machines Testing Air gaps Electromagnetic fields Laboratories Permanent magnets Stator windings Machine windings Finite element methods Magnetic analysis

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A comparative performance analysis of a DDR-SDRAM, a D-RDRAM, and a DDR-FCRAM using a POPeye simulator

A comparative performance analysis of a DDR-SDRAM, a D-RDRAM...

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IEEE International Symposium on Circuits and systems (ISCAS)

作者： Kangmin Lee Chi Weon Yoon Ramchan Woo Jeong-Hun Kook Ja-Il Koo Tae-Sung Jung Ho-Jun Yoo Semiconductor System Laboratory Department of Electrical Engineering and Computer Science Korea Advanced Institute of Science and Technology Daejeon South Korea Samsung Electronics Company Limited Kiheung South Korea

ISBN: (纸本)0780366859

We implemented POPeye (Probe of Performance+eye), a system analysis simulator to evaluate DRAM performance in a personal computer environment. When running any real-life application programs such as Microsoft Office and Paint Shop Pro on Windows OS, POPeye simulates detailed transactions between a CPU and a memory system. Using this tool, we comparatively analyzed the performance of a DDR-SDRAM, a D-RDRAM, and a DDR-FCRAM.

关键词： Performance analysis Computational modeling Probes Performance evaluation Analytical models computer simulation Random access memory Microcomputers Application software Paints

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Vision expert system 3D-IMPRESS for automated construction of three dimensional image processing procedures 7

Vision expert system 3D-IMPRESS for automated construction o...

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7th International Conference on Virtual systems and Multimedia, VSMM 2001

作者： Zhou, Xiang-Rong Shimizu, A. Hasegawa, J. Toriwaki, J. Hara, T. Fujita, H. Virtual System Laboratory Gifu University Gifu-shi501-1193 Japan Graduate School of Bio-Applications and Systems Engineering Tokyo University of Agriculture and Technology Tokyo184-8588 Japan School of Computer and Cognitive Sciences Chukyo University Toyota-shi470-0393 Japan Department of Information Engineering Nagoya University Nagoya-shi464-8603 Japan Department of Information Science Gifu University Gifu-shi501-1193 Japan

ISBN: (纸本)0769514022

In this paper a three dimensional (3D) image processing expert system called 3D-IMPRESS is presented. This system can automatically construct a 3D image processing procedure by using pairs of an original input image and a desired output figure called sample figure given by a user This paper describes the outline of 3D-IMPRESS and presents a method of procedure consolidation for generating a procedure commonly applicable to some other 3D gray images. Finally, we show segmentation results of 3D chest CT images by using the procedures generated by 3D-IMPRESS and discuss the performance of the system. © 2001 IEEE.

关键词： Expert systems

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Separated role of on-chip and on-PCB decoupling capacitors for reduction of radiated emission on printed circuit board

Separated role of on-chip and on-PCB decoupling capacitors f...

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IEEE International Symposium on Electromagnetic Compatibility (EMC)

作者： Jonghoon Kim Baekkyu Choi Hyungsoo Kim Woonghwan Ryu Young-hwan Yun Seog-heon Ham Soo-Hyung Kim Yong-hee Lee Joungho Kim Terahertz Media and System Laboratory Division of Electrical Engineering Korea Advanced Institute of Science and Technology Daejeon South Korea Department of Electrical Engineering and Computer ScienceKorea Advanced Institutes of Science and Technology Samsung Electronics Company Limited Daejeon South Korea

The power/ground fluctuation is known as a significant source of radiated emission. We discuss the separated functions of on-PCB and on-chip decoupling capacitors on the suppression of electromagnetic radiated emission. Due to the different ranges of parasitic inductance and the different locations of the on-chip current drivers, on-PCB and on-chip decoupling capacitors exhibit separated frequency characteristics in terms of suppression efficiency of radiation. The roles of on-PCB and on-chip decoupling capacitors are estimated by circuit simulation and a simple antenna model, and are confirmed by experiments. It is found that the on-chip decoupling capacitors are mainly effective for the suppression of radiated emission over 100 MHz frequency. Increase of the on-chip decoupling capacitance and decrease of the parasitic inductance of the package produce an improved suppression ratio at high frequency range. Combined placement and sizing of the decoupling capacitors have achieved more than 10 dB suppression of the electromagnetic radiated emission over a wide spectrum range.

关键词： Capacitors Frequency Packaging Inductance Electromagnetic radiation Network-on-a-chip Parasitic capacitance Digital circuits Voltage fluctuations Printed circuits

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A modulator neural network architecture for inverse kinematics model learning

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Neurocomputing 2001年 38-40卷 797-805页

作者： Oyama, Eimei Agah, Arvin MacDorman, Karl F. Maeda, Taro Tachi, Susumu Intelligent System Institute National Institute of Advanced Industrial Science and Technology 1-2 Namiki Ibaraki 305-8564 Japan Department of Electrical Engineering and Computer Science. University of Kansas United States Artificial Intelligence Laboratory and Filonet Corporation Wakayama University Canada School of Engineering University of Tokyo Japan

In order to reach an object, we need to solve the inverse kinematics problem, i.e., the coordinate transformation from the visual coordinates to the joint angle vector of the arm. The learning of the inverse kinematics model for calculating every joint angle that would result in a specific hand position is important. However, the inverse kinematics function of the human arm is a multi-valued and discontinuous function. It is difficult for a well-known continuous neural network to approximate such a function. In order to overcome the discontinuity of the inverse kinematics function, a novel modular neural network architecture is proposed in this paper. © 2001 Published by Elsevier Science B.V.

关键词： Neural networks

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Performance of smart antennas with adaptive combining at handsets for the 3GPP W-CDMA system

Performance of smart antennas with adaptive combining at han...

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IEEE Conference on Vehicular Technology (VTC)

作者： Suk Won Kim Dong Sam Ha Jeong Ho Kim Jung Hwan Kim Department of Electrical and Computer Engineering. Virginia Tech. Blacksburg VTVT (Virginia Tech VLSI for Telecommunications) Laboratory Virginia USA Department of Electrical and Computer Engineering. Virginia Tech. Blacksburg VTVT (Virginia Tech VLSI for Telecommunications) Laboratory Blacksburg Virginia USA Next Generation Wireless Communication Research Laboratory LG Electronics Inc. Kyongki-do Korea System Engineering Department University of Arkansas at Little Rock 2801 S. University Avenue Little Rock Arkansas USA

ISBN: (纸本)0780370058

We present the performance gain of dual smart antennas with adaptive combining at handsets for the 3GPP W-CDMA system. The adaptive algorithm based on the normalized least-mean-square (N-LMS) algorithm is employed, in which antenna weights are recursively obtained. To obtain the channel profile, we adopted the GBSB (geometrically based single bounce) elliptical and circular models. The simulation results show that the dual smart antenna system with adaptive combining performs better than a single antenna system and its performance gain is 3.3 dB for the GBSB elliptical model at BER of 5/spl times/10/sup -2/ and 5.5 dB for the GBSB circular model. The higher performance gain is achieved as the mobile velocity decreases.

关键词： Adaptive arrays Telephone sets Multiaccess communication Diversity reception Interference Performance gain Signal processing Base stations Costs Energy consumption

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