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6th International Workshop on Computational Electronics, IWCE 1998

作者： Kurino, H. Ono, T. Kuroishi, N. Kawata, T. Miyakawa, N. Fukase, M. Aibara, R. Koyanagi, M. Intelligent System Design Lab. Dept. of Machine Intelligent and Systems Engineering Graduate School of Engineering Tohoku University Aoba-yama 01 Sendai980-8579 Japan Advanced Technology and Engineering Center Fuji Xerox Co. Ltd. Japan Faculty of Science and Technology Hirosaki University Japan Information Processing Center Hiroshima University Japan

ISBN: (纸本)0780343697

We have developed a new parallel processor system specific for the MC analysis, to dramatically reduce the calculation time. Our parallel processor system is based on ring bus architecture. The RISC micro processor chip, which contains a ring bus interface unit (RBIU), a floating point arithmetic unit (FAU) and so on, was also developed for our system. Speed up ratio compared with a single processor reached to 13.5 at 23 PEs. © 1996 IEEE.

关键词： Digital arithmetic

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An automated inspection system with biologically inspired vision

An automated inspection system with biologically inspired vi...

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Proceedings. 1998 IEEE/RSJ International Conference on intelligent Robots and systems. Innovations in Theory, Practice and Applications (Cat. No.98CH36190)

作者： H. Yalcin H.I. Bozma Lab. of Intelligent Syst. Bogazici Univ. Istanbul Turkey Intelligent Systems Laboratory Electrical Electronics Engineering Department Boğaziçi University Istanbul Turkey

The ability to combine vision and behavior has proven to be vital for a system to achieve real-time performance on a variety of tasks. Using biological evidence, it has been shown that such systems must have oculomotion, attention and spatio-temporal reasoning capabilities. The paper describes BUVIS an automated visual inspection system-which is designed to have these capabilities-and selective perceptual processing thus achieved can result in real-time behavior in visual inspection of manufactured parts.

关键词： Inspection Manufacturing automation Robustness Object recognition Real time systems Cameras Assembly Metals industry Layout intelligent systems

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Dynamic visual servoing of mobile robots based on learning control inputs

Dynamic visual servoing of mobile robots based on learning c...

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IEEE International Conference on systems, Man and Cybernetics

作者： Seung-Min Back Tae-Yong Kuc Intelligent Control & Dynamic Simulation Lab. Sung Kyun Kwan Univ. Suwon South Korea Intelligent Control and Dynamic Simulation Laboratory School of Electrical and Computer Engineering Sung Kyun Kwan University Suwon Kyunggi South Korea

ISBN: (纸本)0780347781

In this paper, a precise trajectory tracking method for mobile robot using a vision system is presented. In solving the problem of precise trajectory tracking, a hierarchical control structure is used which is composed of a path planer, vision system, and dynamic controller. When designing the dynamic controller, non-ideal conditions such as parameter variation, frictional force and external disturbance, are considered. The proposed controller can learn bounded control input for repetitive or periodic dynamics compensation which provides robust and adaptive learning capability. Moreover, the vision system allows the robot to compensate the cumulative location error which exists when a relative sensor, like encoder, is used to locate the robot. The effectiveness of the proposed control scheme is shown through experiment as well as computer simulation.

关键词： Visual servoing Mobile robots Machine vision Trajectory control systems Robot sensing systems Robot vision systems Metalworking machines Force control Force sensors

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Modeling primitives and specification structures for supervisory control

Modeling primitives and specification structures for supervi...

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IEEE Conference on Decision and control

作者： B. Lennartson M. Fabian M. Tittus A. Hellgren Control Eng. Lab. Chalmers Univ. of Technol. Goteborg Sweden Control Engineering Laboratory Department of Signals and Systems Chalmers University of Technology Goteborg Sweden

Three different modeling languages for discrete event systems are compared, automata, Petri nets and process algebra, and it is shown how a couple of basic primitives can be modeled in these languages. Based on these modeling primitives an architecture for a general routing and resource booking problem is presented. The architecture is based on general models for a set of resources, desired routing specifications for a set of objects (products, data packets, vehicles) and a controller that synchronizes the objects utilization of the availab.e resources. High level graphical routing specifications for the objects are also introduced, together with corresponding Petri nets, in order to simplify the specification of desired routes. As applications of the suggested architecture we consider cell controllers for flexible manufacturing systems and multi-purpose batch plants in chemical processing industry.

关键词： Routing Petri nets Chemical industry Discrete event systems Automata Algebra Vehicles control systems Flexible manufacturing systems Chemical processes

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Radio resource knapsack packing for WCDMA air interface

Radio resource knapsack packing for WCDMA air interface

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IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC)

作者： J. Laakso R. Jantti M. Rinne O. Salonaho Nokia Telecommunications Radio Access Systems Nokia Group Finland Control Engineering lab. Helsinki University of Technology Finland Nokia Research Center Nokia Group Finland

A set of optimisation algorithms are studied for high density wideband code division multiple access (WCDMA) mobile networks. The method to be introduced is a radio resource knapsack packing, as packet traffic is the main consideration. The method includes centralised packet scheduling (PS) and power control (PC) algorithms that will maximise a utility function defined by the operator. The goal of the proposed algorithms is to maximise either the throughput of the system (a cluster of cells) or the value of the correctly received packets.

关键词： Multiaccess communication Interference Radio control Centralized control Scheduling algorithm Wideband Clustering algorithms Throughput Frequency Base stations

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Robotic assistants for aircraft inspectors

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IEEE Instrumentation and Measurement Magazine 1998年第1期1卷 16-30页

作者： Siegel, Mel Gunatilake, Priyan Podnar, Gregg Intelligent Sensor Msrmt. C. Robotics Institute Carnegie Mellon University University of Colorado JILA University of Virginia SUNY Buffalo NY United States Extranuclear Laboratories ABB-Extrel Aircraft Diagnostics Corporation University of Alaska Fairbanks AK United States Elec. and Comp. Eng. Department Carnegie Mellon University CMU Vis. Lab. of the Robotics Institute CMU Mobile Robot Laboratory Engineering Design Research Center CMU Computer Science Department JiangXi University Robotics Institute Measurement and Control Laboratory

Various alternative aircraft inspection methods are first discussed and advantages of using robots are analysed. ANDI (Automated NonDestructive Inspector) and CIMP (Crown Inspection Mobile Platform) are then described. Remote 3D stereoscopic visual inspection is outlined and algorithms developed for crack detection and surface and subsurface corrosion detection are described. Future development trends are also outlined.

关键词： Robots Aircraft Aerospace electronics Instruments

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Robust feedback designs for consolidation of metal matrix composites

Robust feedback designs for consolidation of metal matrix co...

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IEEE Conference on control Technology and Applications (CCTA)

作者： R. Vancheeswaran H.N.G. Wadley T.L. Piatt D.G. Meyer R.L. Kosut Nonlinear & Real-Time Systems Control Lab University of Colorado Boulder CO USA SC Solutions Inc. Santa Clara CA USA Intelligent Processing of Materials Lab School of Engineering & Applied Science University of Virginia Charlottesville VA USA

Consolidation of fiber reinforced metal matrix composite preforms at high temperatures seeks to eliminate matrix porosity while minimizing fiber microbending/fracture and the growth of reaction products at the fiber-matrix interface. This paper evaluates to what extent uncertainty in geometry and material parameters affects the final microstructural attributes of the composite. Then several design methods and feedback control designs for robust regulation of consolidation are presented. Efficacy of the methods and designs are illustrated by exploring the design of process schedules for the Ti-6Al-4V/SCS-6 titanium matrix composite with variability in the matrix creep properties.

关键词： Robustness Design methodology Preforms Temperature Uncertainty Geometry Composite materials Feedback control Robust control Process design

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Range spread measurement of underwater scatterers and channels using active sonar probing signals and a cross‐correlation process

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The Journal of the Acoustical Society of America 1998年第5_SUPPLEMENT期103卷 2899-2899页

作者： James J. Kisenwether Dennis W. Ricker Autonomous Control and Intelligent Systems Div. Appl. Res. Lab. Penn State Univ. State College PA 16804

A method for measuring range spread of underwater scatterers and channels based on the cross‐correlation processing of the tones of a multicomponent waveform has been developed. The correlation terms which comprise the measure are samples of the time‐frequency correlation functions (TFCF) of scatterers and channels. The measure has been used to characterize the time‐frequency spread and represents the signal coherence. This paper will provide a review of two frequency correlation function representations and their characterization using the aggregate coherence measure, termed correlation mass. The sensitivity of this measure as a function of waveform parameters, scatterer structure, and measurement platform motion will be defined and its robustness on a multiping basis assessed. It will be shown that this measure can be decomposed into correlated components resulting from interaction with a scatterer and a channel. Essentially the composite correlation is obtained by sampling the product of the scatterer and channel TFCF’s. Data from in‐water experiments and digital sonar simulations will be presented which validates the linear systems model of the composite scattering process. [Work supported by ONR.]

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Model Partitioning for Model-Based Diagnosis

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IFAC Proceedings Volumes 1997年第18期30卷 845-850页

作者： G. Katsillis M.J. Chantler Intelligent Systems Lab. Dept of Computing & Electrical Engineering Heriot-Watt Univeristy Edinburgh Scotland

Model-based diagnostic systems (MBDSs) are increasingly being applied to real industrial problems. Often this results in the development of large models which must be partitioned into a number of subsystems in order that the MBDSs may be applied to problems of practical size. For other MBDSs the model's equations must be causally ordered, and in dependency-based MBDSs (e.g. GDE, De Kleer and Williams. 1987) groups of simultaneous equations must be identified and solved so that a local "constraint propagation" algorithms may be employed. This paper presents the implementation, use, and extension, of a model partitioning algorithm due to Portè et al. (1988). As well as outlining its design, and its extensions, this paper also presents the results obtained by applying the algorithm to a chemical plant model.

关键词： fault diagnosis parameter estimation causal ordering GDE computer-aided diagnosis decomposition methods model-based diagnosis model partitioning dependency recording

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Fabrication of 0.1 μm mosfet with super self-aligned ultrashallow junction electrodes using selective si1-xgex CVD 27

Fabrication of 0.1 μm mosfet with super self-aligned ultras...

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27th European Solid-State Device Research Conference, ESSDERC 1997

作者： Murota, J. Ishii, M. Goto, K. Sakuraba, M. Matsuura, T. Kudoh, Y. Koyanagi, M. Laboratory for Electronic Intelligent Systems Research Institute of Electrical Communication Tohoku University 2-1-1 Katahira Aoba-ku Sendai980-77 Japan Department of Machine Intelligence and System Engineering Faculty of Engineering Tohoku University Aza-Aoba Aramaki Aoba-ku Sendai980-77 Japan Miyagi OKI Electric Co. Ltd. Okinodaira Ohiramura Kurokawagun Miyagi981-36 Japan ULSI Development Lab. Mitsubishi Electric Corp. Mizuhara Itami664 Japan

ISBN: (纸本)2863322214

Fabrication process of 0.1μm MOSFET's were developed with Super Self-aligned ultra-Shallow junction Electrode(S3EMOSFET) by utilizing in-situ impurity doped Si1-xGex selective epitaxy on the source/drain regions at 550°C by CVD. Normal saturation characteristics were observed and the threshold voltage scarcely showed a shift with the gate length, which means that the short channel effect is greatly suppressed in the S3EMOSFET. Further improvements of the current drivability were performed by annealing and selective tungsten growth. The results show very high potentials of this device for an ultrasmall MOSFET, because the effective channel length is almost the same as the fabricated gate length and the source/drain junctions are extremely shallow.

关键词： Threshold voltage

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