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American control Conference

作者： Denis V. Efimov Hosein Javaherian Vladimir O. Nikiforov Control of Complex Systems Laboratory Institute of Problems of Mechanical Engineering Saint Petersburg Russia Powertrain Systems Research Laboratory GM Research and Development Center Warren Michigan USA Department of Information and Control Systems Saint Petersburg State Institute of Information Technology Mechanics and Optics Russia

ISBN: (纸本)9781424474264

The paper addresses the problem of air-fuel ratio (AFR) stabilization applying learning techniques. The proposed strategy consists in iterative redesign of control coefficients based on the control obtained in a previous step in conjunction with an adaptive scheme. The interesting feature of the proposed solution is that the adaptive control attempts to match not the AFR dynamics but rather the error dynamics originated by the substitution of the feedforward control in the real system. Results of application are reported and discussed.

关键词： Sparks Ignition Engines Adaptive control control systems Programmable control Neural networks Vehicle dynamics Vehicles USA Councils

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Nuclear fusion control-oriented plasma current linear models

Nuclear fusion control-oriented plasma current linear models

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作者： Garrido, Aitor J. Garrido, Izaskun Goretti Sevillano, M. Alberdi, Mikel Amundarain, Modesto Barambones, Oscar De La Sen, Manuel Department of Systems Engineering and Automatic Control School of Technical Industrial Engineering Campus of Bilbao Plaza Casilla 3 48012- Bilbao Spain Department of Systems Engineering and Automatic Control School of Technical Industrial Engineering Campus of Vitoria Nieves Cano 12 01006-Vitoria Spain Department of Electricity and Electronics Faculty of Science and Technology Institute of Research and Development of Processes PO Box 644 Bilbao Spain

ISBN: (纸本)9789604741991

The control of plasma in nuclear fusion has been revealed as a promising application of control Engineering, with increasing interest in the control community during last years. In this paper it is developed a control-oriented linear model for the control of plasma current. For this purpose, it is provided a summary of the background necessary to deal with control problems in tokamak-based nuclear fusion reactors as it is the case of the future ITER tokamak. Besides, it is also given a review of the most used simulators and plasma models, with the aim of providing an adequate background for control engineers to derive their own control-oriented model or to choose the appropriate existing one. Finally, the proposed plasma model performance is proven in a current drive profile trajectory tracking problem using a modified anti-windup PIDbased control scheme.

关键词： Tokamak devices

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Editorial Special issue on approximate dynamic programming and reinforcement learning

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控制理论与应用（英文版） 2011年第3期 309-309页

作者： Silvia Ferrari Jagannathan Sarangapani Frank L. Lewis Laboratory for Intelligent Systems and Control(LISC)Department of Mechanical Engineering & Materials Science Box 90300 Duke University Durham NC 27708-0005 Department of Electrical & Computer Engineering University of Missouri-Rolla MO 65401 U.S.A. Automation and Robotics Research Institute The University of Texas at Arlington 7300 Jack Newell Blvd. S Ft. Worth Texas 76118-7115 U.S.A.

We are extremely pleased to present this special issue of the Journal of control Theory and *** dynamic programming (ADP) is a general and effective approach for solving optimal control and estimation problems by adapting to uncertain environments over *** optimizes the sensing objectives accrued over a future time interval with respect to an adaptive control law,conditioned on prior knowledge of the system,its state,and uncertainties.A numerical search over the present value of the control minimizes a Hamilton-Jacobi-Bellman (HJB) equation providing a basis for real-time,approximate optimal control.

关键词： reinforcement learning dynamic programming optimal control effective approach prior knowledge control Theory real-time control law problems special search future ADP basis

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Combined nanorobotic AFM/SEM system as novel toolbox for automated hybrid analysis and manipulation of nanoscale objects

Combined nanorobotic AFM/SEM system as novel toolbox for aut...

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IEEE International Conference on robotics and Automation (ICRA)

作者： U. Mick V. Eichhorn T. Wortmann C. Diederichs S. Fatikow Division Microrobotics and Control Engineering Technology Cluster Automated Nano handling Oldenburg Research and Development Institute for Information Technology Tools and Systems University of Oldenburg Oldenburg Germany

In this paper, the concept and first results of a novel toolbox for nanoscale characterization are presented. A nanorobotic AFM system is being developed and integrated into a high resolution SEM/FIB system allowing nanoanalysis, -manipulation and -structuring. The compact and modular AFM setup enables probe- as well as sample-scanning and uses self-sensing AFM cantilevers. Image fusion algorithms are developed to merge SEM and AFM information for hybrid analysis of nanoscale objects. A commercial AFM controller is embedded into a special control system architecture that allows for automation of nanomanipulation sequences.

关键词： Scanning electron microscopy Electron beams Force feedback Probes robotics and automation Atomic force microscopy Performance evaluation Automatic control control systems X-ray diffraction

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Linear models for plasma current control in tokamak reactors

Linear models for plasma current control in tokamak reactors

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International Conference on control, Automation, robotics and Vision (ICARCV)

作者： Aitor J. Garrido Izaskun Garrido M. Goretti Sevillano Modesto Amundarain Mikel Alberdi Oscar Barambones Manuel De la Sen Department of Systems Engineering and Automatic Control School of Technical Industrial Engineering Bilbao Spain Department of Systems Engineering and Automatic Control School of technical Industrial Engineering Vitoria Spain Department of Electricity and Electronics Institute of Research and Development of Processes Faculty of Science and Technology Bilbao Spain

关键词： Mathematical model Equations Tokamaks Magnetohydrodynamics Magnetic fields Computational modeling

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Help on SOS [Ask the Experts]

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IEEE control systems 2010年第4期30卷 18-23页

作者： Ufuk Topcu Andy Packard Peter Seiler Gary Balas Mechanical Engineering Department University of California Berkeley USA California Institute of Technology USA Aerospace Engineering and Mechanics Control Science and Dynamical Systems program University of Minnesota USA Aerospace Engineering and Mechanics Department University of Minnesota USA Research and Development Honeywell International Inc. USA

In this issue of IEEE control systems Magazine, Andy Packard and friends respond to a query on determining the region of attraction using sum-of-squares methods.

关键词： Polynomials Symmetric matrices Convergence Yield estimation control theory Matrix decomposition

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Configuration Synthesis and Performance Evaluation Metrics of Lunar Rover Locomotion systems

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Transactions of Tianjin University 2009年第3期15卷 193-200页

作者：邓宗全张朋高海波胡明 State Key Laboratory of Robotics and Systems Harbin Institute of Technology Research Center of Aerospace Mechanism and Control Harbin Institute of Technology

A method of topology synthesis based on graph theory and mechanism combination theory was applied to the configuration design of locomotion systems of lunar exploration rovers(LER).Through topology combination of wheel structural unit,suspension unit,and connecting device unit between suspension and load platform,some new locomotion system configurations were proposed and the metrics and indexes to evaluate the performance of the new locomotion system were *** evaluation and comparison between two LER with locomotion systems of different configurations were *** analysis results indicate that the new locomotion system configuration has good trafficability performance.

关键词： configuration synthesis evaluation metrics locomotion system lunar rover

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Evaluation of commercial off-the-shelf sorbents & catalysts for control of ammonia and carbon monoxide

Evaluation of commercial off-the-shelf sorbents & catalysts ...

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40th International Conference on Environmental systems, ICES 2010

作者： Luna, Bernadette Somi, George Winchester, J. Parker Grose, Jeffrey Mulloth, Lila Perry, Jay L. NASA Ames Research Center Bioengineering Branch Biosciences Division Building N239 Moffett Field CA 94035-1000 United States NASA Ames Research Center Bioengineering Branch Arizona Space Grant Consortium Embry-Riddle Aeronautical University 3700 Willow Creek Rd. #8206 Moffett Field CA 94035-1000 United States NASA Ames Research Center Bioengineering Branch University Space Resarch Association Mail Stop 226-8 NASA ARC Moffett Field CA 94035-1000 United States NASA Ames Research Center Bioengineering Branch Bay Area Environmental Research Institute 560 3rd St. West Sonoma CA 94035-1000 United States NASA Ames Research Center Bioengineering Branch SAIC Technology Services Company 2450 NASA Parkway Houston TX 77058 United States Environmental Control Systems Space Systems Department NASA Marshall Space Flight Center ECLS System Development Branch MSFC AL 35812 United States

ISBN: (纸本)9781600869570

Designers of future space vehicles envision simplifying the Atmosphere Revitalization (AR) system by combining the functions of trace contaminant (TC) control and carbon dioxide removal into one swing-bed system. Flow rates and bed sizes of the TC and CO2 systems have historically been very different. There is uncertainty about the ability of trace contaminant sorbents to adsorb adequately in high-flow or short bed length configurations, and to desorb adequately during short vacuum exposures. There is also concern about ambient ammonia levels in the absence of a condensing heat exchanger. In addition, new materials and formulations have become commercially available, formulations never evaluated by NASA for purposes of trace contaminant control. The optimal air revitalization system for future missions may incorporate a swing-bed system for carbon dioxide (CO2) and partial trace contaminant control, with a reduced-size, low-power, targeted trace contaminant system supplying the remaining contaminant removal capability. This paper describes the results of a comparative experimental investigation into materials for trace contaminant control that might be part of such a system. Ammonia sorbents and low temperature carbon monoxide (CO) oxidation catalysts are the foci. The data will be useful to designers of AR systems for future flexible path missions. This is a continuation of work presented in a prior year, with extended test results.

关键词： Carbon monoxide

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Robotic Workstation for AFM-Based Nanomanipulation Inside an SEM

Robotic Workstation for AFM-Based Nanomanipulation Inside an...

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2010 IEEE/ASME international conference on advanced intelligent mechatronics (AIM 2010)

作者： U. Mick M. Weigel-Jech S. Fatikow Division Microrobotics and Control Engineering (AMiR) Oldenburg Research and Development Institute of Information Technology Tools and Systems (OFFIS) Technology Cluster Automated Nanohandling (TCANH) University of Oldenburg Oldenburg Germany

Combining the SEM as a visual sensor with the force control of an AFM promises to provide a unique tool for automated robotic nanomanipulations. This article presents the development of a nanorobotic workstation that can use AFM capabilities for robotic nanomanipulations inside an SEM. The hardware architecture for the AFM setup inside the SEM is described in detail. The AFM capabilities are demonstrated by in-situ acquired AFM and SEM images of identical sample locations. Initial AFM-based manipulation experiments on manipulating a graphene sheet and on pushing nanosized polymer beads are presented. The integration of the system with haptic feedback for teleoperation and into a robotic automation and visual control framework is discussed.

关键词： Robot sensing systems Scanning electron microscopy Force Automation Polymers Haptic interfaces

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Modelling and simulation of a combustion turbogenerator for control analysis and design

Modelling and simulation of a combustion turbogenerator for ...

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IFAC Symposium on Power Plants and Power systems control, PP and PSC 2009

作者： Garduno-Ramirez, Raul Delgadillo-Valencia, Miguel A. Hernandez-Rodriguez, Isaura Alcaide-Godinez, Indira X. Guevara-Gordillo, Ricardo Electrical Research Institute Division of Control Systems GCI 29-1 Cuernavaca 62490 Mexico Department of Electronics National Research and Development Centre Cuernavaca 62490 Mexico

This paper introduces the mathematical model of a 32 MVA combustion turbogenerator, including its control system, which has been implemented to perform real-time simulation experiments. The turbogenerator model comprehends the interconnection of the gas turbine, synchronous generator, turbine control system and generator control systems. The turbogenerator model allows simulation of turbogenerator startup, from turngear-speed up to synchronization-speed, and turbogenerator loading throughout the generator capability curve, from minimum-load condition up to peak-load condition. The proposed model is intended for the development of control systems, including speed, voltage, real power and reactive power controls. Simulation results using digital PI control algorithms are presented.

关键词： Power control

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