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2015 ASHRAE Winter Conference

作者： Talebzadeh, Atieh Patnaik, Abhishek Gao, Xu Moradian, Mahdi Swenson, David E. Pommerenke, David Department of Electrical and Computer Engineering Missouri University of Science and Technology RollaMO United States Affinity Static Control Consulting LLC Round RockTX United States

ISBN: (纸本)9781936504961

This is Part II of a three-part paper investigating the dependence of charge voltage generated by human activity on humidity in data centers. The first paper described the experimental methods, while this paper is devoted to the analysis of the electrostatic charge voltage levels along the following parameters: relative humidity, absolute humidity, footwear, flooring, and type of activity. The human activities studied included well-defined walking, random walking, taking off and dropping a sweater, and standing up from a chair. This study confirms the importance of footwear and flooring and quantifies their effectiveness. The results indicate that lower absolute humidity may not always lead to higher voltages, while reducing the relative humidity will cause the average voltages to increase. The high voltages, created by removing and dropping a sweater and by standing up from a chair, indicate that these types of user activities might pose a higher ESD (electrostatic discharge) risk (generating voltage greater than 6 kV) than the walking activities. The analyses are based on the definition of walking, standing, chair event, and sweater event voltages, as presented in Part I. © 2015 ASHRAE.

关键词： Floors

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Human-robot SLAM in industrial environments

Human-robot SLAM in industrial environments

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IEEE International Conference on Industrial Informatics (INDIN)

作者： E. Guerra Y. Bolea A. Grau R Munguía Department of Automatic Control Technical University of Catalonia Barcelona Spain Department of Computer Science Universidad de Guadalajara Guadalajara Mexico

A novel approach to the SLAM problem has been tested in an industrial environment within a robotic assistance context. In order to be fully reliable in non-modelled circumstances where the environment cannot be considered as known a priori, a robot assistant must be able to localize and map its environment. The use of a camera sensor to solve localization has several advantages and weaknesses due the nature of the only-bearing data. But as the robot is expected to assist the human agent, this agent can deploy additional sensors and provide the robot with data to help solve the SLAM problem. Thus, another camera worn by the human agent is used to produce non-continuous stereo data with the robotic camera, to speed-up and add robustness to several parts of the monocular SLAM process considered. The approach has been tested with real experiments focused on singular trajectories and other issues found on industrial environments.

关键词： Cameras Simultaneous localization and mapping Robot vision systems Service robots Estimation

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A comparative study on D converter based on control schemes of maximum extracted power

A comparative study on D converter based on control schemes ...

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Conference Record of the IEEE Industry Applications Society Annual Meeting (IAS)

作者： Ahmad El Khateb M.N. Uddin N. A. Rahim Barry W. Williams Automatic Control and Human-Machine Systems LAMIH UMR/CNRS Valenciennes France Electronic Engineering Department Tsinghua University Tsinghua National Laboratory for Information Science and Technology (TNList) Beijing P. R. China Shenzhen City Key Laboratory of Digital TV System Valeo Powertrain Systems Amiens France National Engineering Lab. for DTV(Beijing) Beijing P. R. China

ISBN: (纸本)9781479983988

This paper presents analysis and control of D converter, which has continuous input and output current to obtain maximum power transfer from a photovoltaic (PV) system. Examining the maximum power involves optimization and control techniques that ensure maximum power extraction enhancement. Traditional converters have rather high input ripple current that originates considerable loss of power extraction when linked to photovoltaic panels. Operating with zero input ripple current enlarges the power obtained from the PV panel without employing electrolytic capacitor. Experiment and simulation of the converter performance support and extol the system concept and establish a balanced view among several types of used controllers as well.

关键词： Inverters Capacitors Photovoltaic systems Radiation effects control systems Fuel cells

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Aberration Correction Techniques in Imaging Systems Using Adaptive Optics for Fluorescence Microscopy

Aberration Correction Techniques in Imaging Systems Using Ad...

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International Conference on control Systems and computer science (CSCS)

作者： Carmen-Gabriela Radulescu Alina Voda Dan Stefanoiu Romania Faculty of Automatic Control and Computer Science Politehnica University of Bucharest GIPSA-lab Control Systems Department Joseph Fourier University France

The aim of this article is to develop optical aberration correcting methods using adaptive optics for co focal microscopy in imaging systems. In order to compensate the aberrations, a dynamic element, consisting of a deformable mirror, was used. The correction is performed by controlling the surface of the deformable mirror, in order to improve the overall system image resolution. Moreover, the wave front sensor less system case was considered. By combining the automatic control algorithms with the physics laws, quite accurate estimations can be obtained, while testing several different scenarios.

关键词： Customer relationship management Adaptive optics Optimized production technology Mathematical model Optical sensors Mirrors Optical imaging

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Risk-aware planning in hybrid domains: An application to autonomous planetary rovers

Risk-aware planning in hybrid domains: An application to aut...

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AIAA Space and Astronautics Forum and Exposition, SPACE 2016

作者： Santana, Pedro Vaqueroy, Tiago Timmonsz, Eric Williams, Brian C. McGhan, Catharine L. R. Murray, Richard M. Toledo, Claudio Department of Aeronautics and Astronautics Massachusetts Institute of Technology 32 Vassar Street 32-224 CambridgeMA02139 United States Computer Science and Artificial Intelligence Laboratory Massachusetts Institute of Technology 32 Vassar Street 32-224 CambridgeMA02139 United States Electrical Engineering & Computer Science Massachusetts Institute of Technology 32 Vassar Street 32-224 CambridgeMA02139 United States Department of Aeronautics and Astronautics Massachusetts Institute of Technology 77 Massachusetts Avenue 33-330 CambridgeMA02139 United States Department of Control and Dynamical Systems California Institute of Technology 1200 E. California Blvd. Mail Code 305-16 PasadenaCA91125 United States Department of Control and Dynamical Systems California Institute of Technology 1200 E. California Blvd. Mail Code 107-81 PasadenaCA91125 United States Instituto de Ciências Matemáticas e de Computacão Avenida Trabalhador São-Carlense 400 AraraquaraSão Paulo Brazil Universidade de São Paulo SP13566-590 Brazil

ISBN: (数字)9781624104275

ISBN: (纸本)9781624104275

Expanding robotic space exploration beyond the immediate vicinity of Earth's orbit can only be achieved by increasingly autonomous agents, given the sometimes insurmountable challenges of teleoperation over great distances. Among the numerous requirements that a fully autonomous robotic space explorer must meet, here we focus on three key mission-enabling technologies: the ability to act under uncertainty and adapt to its environment;the ability to optimize performance while offering hard bounds on the risk of mission failure;and the ability to handle complex hybrid (discrete and continuous) mission planning problems in a provably correct and scalable fashion. In this paper, we show how CLARK, a planner capable of generating risk-bounded, dynamic temporal plans for autonomous agents operating under uncertainty, is able to efficiently generate temporal plans for a challenging planetary rover scenario featuring temporal uncertainty that could not be addressed by previous methods. © 2016, American Institute of Aeronautics and Astronautics Inc, AIAA. All rights reserved.

关键词： Orbits

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controller Verification and Parametrization Subject to Quantitative and Qualitative Requirements

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IFAC-PapersOnLine 2015年第8期48卷 1174-1179页

作者： Petar Andonov Anton Savchenko Philipp Rumschinski Stefan Streif Rolf Findeisen Laboratory for Systems Theory and Automatic Control Otto-von-Guericke University Magdeburg Germany Department of Computer Science and Automation Technical University of Ilmenau Ilmenau Germany

Verifying if a process controller achieves a desired goal regarding safety specifications or performance is an important task in practice. This work presents a method for controller verification and parametrization of uncertain polynomial discrete-time systems with closed-loop requirements. Apart from quantitative constraints, also qualitative requirements, which are not directly linked to a specific time or amplitude, are considered. For formalizing these constraints, we employ linear temporal logic formulas and polynomial inequalities. Uncertainties can be considered in the input, the output, the initial conditions and the model parameters to account e.g. for model plant mismatch and noise, described as unknown-but-bounded variables. We combine the requirements and the system dynamics into a nonlinear feasibility problem to verify the controller and determine admissible controller parametrization. This problem is solved by relaxing it to a mixed-integer linear program. The relaxation procedure guarantees that the derived set of possible parametrization fulfill the quantitative and qualitative requirements of the closed-loop behavior despite the present uncertainties. The proposed method is illustrated by verifying and parametrizing a controller for a two tank system.

关键词： set-based method controller tuning inner approximation uncertain systems qualitative and quantitative requirements

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Blind identification strategies for room occupancy estimation

Blind identification strategies for room occupancy estimatio...

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European control Conference

作者： A. Ebadat G. Bottegal D. Varagnolo B. Wahlberg H. Hjalmarsson K. H. Johansson ACCESS the Department of Automatic Control School of Electrical engineering KTH Royal Institute of Technology Division of Signals and Systems Department of Computer Science Electrical and Space Engineering Lulea University of Innovation and Technology

ISBN: (纸本)9781467371605

We propose and test on real data a two-tier estimation strategy for inferring occupancy levels from measurements of CO_2 concentration and temperature levels. The first tier is a blind identification step, based either on a frequentist Maximum Likelihood method, implemented using non-linear optimization, or on a Bayesian marginal likelihood method, implemented using a dedicated Expectation-Maximization algorithm. The second tier resolves the ambiguity of the unknown multiplicative factor, and returns the final estimate of the occupancy levels. The overall procedure addresses some practical issues of existing occupancy estimation strategies. More specifically, first it does not require the installation of special hardware, since it uses measurements that are typically available in many buildings. Second, it does not require apriori knowledge on the physical parameters of the building, since it performs system identification steps. Third, it does not require pilot data containing measured real occupancy patterns (i.e., physically counting people for some periods, a typically expensive and time consuming step), since the identification steps are blind.

关键词： System identification Management of HVAC systems Maximum Likelihood Expectation-Maximization

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Complementary Research and Education Opportunities—A Comparison of Learning Factory Facilities and Methodologies at TU Wien and MTA SZTAKI

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Procedia CIRP 2016年 54卷 47-52页

作者： Zsolt Kemény János Nacsa Gábor Erdős Robert Glawar Wilfried Sihn László Monostori Elisabeth Ilie-Zudor Fraunhofer Project Center PMI Institute for Computer Science and Control Hungarian Academy of Sciences Kende u. 13–17 H-1111 Budapest Hungary Department of Manufacturing Science and Engineering Budapest University of Technology and Economics Mőegyetem rkp. 3. H-1111 Budapest Hungary Institute of Management Science Vienna University of Technology Theresianumgasse 27 1040 Vienna Austria Fraunhofer Austria Research GmbH Division of Production and Logistics Management Theresianumgasse 7 A-1040 Vienna Austria

Typical learning factories are characterized by selective simplification or scaling-down of complex and large-scale production processes, while also safely containing risks in the case of process failures inherent to experimental and didactic activities. The variety of aspects preserved by these scaled-down environments allow different approaches to be taken in research and education. The paper compares two facilities, at TU Wien and at MTA SZTAKI in Budapest, respectively, and highlights differences in their modes of operation, the resulting variations of course-based vs. project-based didactic approaches, as well as their place in technical higher education.

关键词： Learning Factory Smart Factory Research test-bed Project-oriented education Course-oriented education

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Doggy Drone: A Low Cost Ball Catching System based on the *** Quadrotor and Xtion PRO

Doggy Drone: A Low Cost Ball Catching System based on the **...

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IEEE International Conference on Information and Automation

作者： Hanbin Wang Tangwei Hsu Matthieu Gallet Florent Maye Department of Control Science & Engineering Tongji University Department of Computer Science National Taiwan University

In this paper, it proposes a low cost ball catching system which is called Doggy Drone. This system is composed of two main parts: using Xtion PRO to sense the position of objects and controlling the *** to a certain ... 详细信息

ISBN: (纸本)9781467391054

关键词： Tracking AR.Drone Xtion PRO Object detection

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A managing QoE approach for provisioning user experience aware services using SDN 11

A managing QoE approach for provisioning user experience awa...

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11th ACM Symposium on QoS and Security for Wireless and Mobile Networks, Q2SWinet 2015

作者： Da Silva, Madalena P. Dantas, M.A.R. Gonçalves, Alexandre L. Pinto, A.R. Department of Engineering and Knowledge Management Federal University of Santa Catarina Brazil Computer Science Federal University of Santa Catarina Brazil Control and Automation Federal University of Santa Catarina Brazil

ISBN: (纸本)9781450337571

Provision and delivery of services with quality is a classic research problem, however the computational resources available in the network infrastructure of providers are, usually, managed with conventional Quality of Service (QoS) parameters. This paper presents an approach of Quality of Experience (QoE) management for providing services aware of the user experience. QoE modeling and architecture are proposed, with a semantic engine able to learn the user's experience during the use of a service, detecting violations of QoS metrics and providing information, allowing the controller to perform actions in the elements of the Software Defined Networking. The experimental results demonstrate that the proposal is feasible and functional and that the time spent between QoE detection and adaptation of policies in network resources do not influence the quality perceived by the user. © 2015 ACM.

关键词： Quality of service

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