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International Conference on Environment and Electrical engineering (EEEIC)

作者： Anna Pellegrino Valerio R.M. Lo Verso Laura Blaso Andrea Acquaviva Edoardo Patti Anna Osello Department of Energy - TEBE Research Group Politecnico di Torino Turin Italy Department of Control and Computer Engineering Politecnico di Torino Turin Italy Dept. of Structural Geotechnical and Building Engineering Politecnico di Torino Turin Italy

ISBN: (纸本)9781479979943

The paper presents some results of a project carried out within the 7 th European Research Framework Program, aimed at developing an event-driven user-centric middleware for monitoring and managing energy consumption in public buildings. One of the strengths of the designed system is to allow an easy integration of heterogeneous technologies and their hardware independent interoperability. This is a feature of great importance to existing buildings, where standing controls could be integrated with new technologies to enhance a greater building energy efficiency. The functionality of the system has been tested in some representative spaces of existing public buildings. control strategies and hardware infrastructures have been defined to manage the operation of HVAC and lighting plants. The paper focuses on the results obtained by applying the designed system and control strategies to the electric lighting plants of different office spaces.

关键词： Buildings Middleware Sensors Energy consumption Lighting control systems Noise

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Atomic force microscopy for high resolution sidewall scans 4

Atomic force microscopy for high resolution sidewall scans

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4th International Conference on Manipulation, Manufacturing and Measurement on the Nanoscale, 3M-NANO 2014

作者： Krohs, Florian Haenssler, Olaf C. Bartenwerfer, Malte Fatikow, Sergej University of Oldenburg Dept. Computer Science Division Microrobotics and Control Engineering Oldenburg Germany

ISBN: (纸本)9781479979233

Over the last decades, atomic force microscopy (AFM) became one of the most important measuring instruments in various disciplines covering life science, biology, material science, semiconductor industries, and micro- and nanotechnology. Conventional AFM scanning techniques are limited to a 2.5D image acquisition, resulting a simple 2D high-map of the surface. Due to the ongoing miniaturization in semiconductor and nanomanufacturing industries, measurements on the critical dimensions are of growing importance. Additionally, novel measurement tasks as the determination of linewidths or even sidewall roughness arise as need from nanometrology. Especially, the upcoming technology of nanooptics and photonics relies critically on powerful and ultra-precise characterization tools for complex surfaces on the sub-nanoscale. In order to produce suitable optical waveguides and building-blocks, all surface roughness and surface impurities have to be minimized, since the result in severe light diffusion and diffraction. Conventional AFM probes are suitable for 2.5D image acquisitions only and don't allow a correct scanning of complex structures. The pyramidal tip of standard probes cannot scan high aspect ratio structures, which leads to a distorted AFM image and to incorrect trench width and height. Furthermore, a standard tip is not able to contact surfaces with tilt-angles larger than the pyramid's side-angle. In general, this makes sidewall scans impossible at all. To overcome these problems, a novel method for performing sidewall measurements is proposed, based on standard AFM equipment in combination with customized FIB-milled AFM tips. Standard AFM environment is improved with an additional control loop incorporating the torsion of the cantilever as feedback to control the lateral position of the AFM tip. © 2014 IEEE.

关键词： Atomic force microscopy

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A single-phase rectifier with a neutral leg to reduce DC-bus voltage ripples

A single-phase rectifier with a neutral leg to reduce DC-bus...

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作者： Ming, Wen-Long Zhong, Qing-Chang Sheng, Wanxing Dept. of Automatic Control and Systems Engineering University of Sheffield United Kingdom Dept. of Power Distribution China Electric Power Research Institute Beijing100192 China

ISBN: (纸本)9781479956982

The voltage ripples of the half-bridge rectifier lead to the requirement on bulky electrolytic capacitors and voltage difference on the split capacitors. In this paper, a topology for a single-phase rectifier is proposed to reduce the DC-bus voltage ripples and voltage difference without using electrolytic capacitors. The proposed rectifier contains two legs: 1) A rectification leg to maintain the DC-bus voltage and to draw a clean input current with unity power factor;2) A neutral leg to reduce DC-bus voltage ripples and the voltage difference. The two legs are independently controlled and the resulted high performance of the system is achieved. In order to test the system, real-time simulations were conducted and associated results are presented to demonstrate that the system is able to considerably reduce the DC-bus voltage ripples. With the derived system, the total required DC-bus capacitors can be reduced a lot when achieving the same level of voltage ripples. © 2014 IEEE.

关键词： Electrolytic capacitors

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Identification of Gaussian process state-space models with particle stochastic approximation EM 19

Identification of Gaussian process state-space models with p...

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19th IFAC World Congress on International Federation of automatic control, IFAC 2014

作者： Frigola, Roger Lindsten, Fredrik Schön, Thomas B. Rasmussen, Carl E. Dept. of Engineering University of Cambridge United Kingdom Div. of Automatic Control Linköping University Sweden Dept. of Information Technology Uppsala University Sweden

ISBN: (纸本)9783902823625

Gaussian process state-space models (GP-SSMs) are a very flexible family of models of nonlinear dynamical systems. They comprise a Bayesian nonparametric representation of the dynamics of the system and additional (hyper-)parameters governing the properties of this nonparametric representation. The Bayesian formalism enables systematic reasoning about the uncertainty in the system dynamics. We present an approach to maximum likelihood identification of the parameters in GP-SSMs, while retaining the full nonparametric description of the dynamics. The method is based on a stochastic approximation version of the EM algorithm that employs recent developments in particle Markov chain Monte Carlo for efficient identification. © IFAC.

关键词： Parameter estimation

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An asymmetrical ΓZ-source hybrid power converter with space vector pulse-width modulation

An asymmetrical ΓZ-source hybrid power converter with space...

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作者： Cai, Jun Zhong, Qing-Chang Dept. Automatic Control and Systems Engineering University of Sheffield SheffieldS1 3JD United Kingdom

ISBN: (纸本)9781479956982

In this paper, an asymmetrical ΓZ-source hybrid power converter is proposed for fuel cell-battery hybrid vehicle application. The converter uses an asymmetrical ΓZ-source converter to interface the fuel cell and a bidirectional DC-DC converter to interface the battery. Via the DC-DC converter, the capacitor voltage of the asymmetrical ΓZ-source converter can be controlled into a constant value. By adjusting the modulation index of the inverter, the fuel cell voltage can be controlled into the reference value, which can ensure high operation efficiency in the fuel cell. To reduce the number of semiconductor switching in the shoot through states, the space vector pulse-width modulation (SVPWM) control method is implemented for achieve the maximum constant boost control for the asymmetrical ΓZ-source inverter. To verify the validity of the proposed power converter topology and the control methods, the real-time simulation model is performed in Opal-RT Real Time Digital Simulator. The simulation results demonstrated the feasibility of the proposed methods. © 2014 IEEE.

关键词： Hybrid vehicles

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Avionic Technology Testing By Using a Cognitive Neurometric Index: a Study with Professional Helicopter Pilots

Avionic Technology Testing By Using a Cognitive Neurometric ...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Gianluca Borghini Pietro Aricò Gianluca Di Flumeri Serenella Salinari Alfredo Colosimo Stefano Bonelli Linda Napoletano Ana Ferreira Fabio Babiloni Dept. Physiology and Pharmacology University of Rome "Sapienza" Italy and IRCCS Fondazione Santa Lucia Rome Italy the Dept. Physiology and Pharmacology University of Rome "Sapienza" Italy Dept. Anatomical Histological Forensic & Orthopedic Sciences University of Rome "Sapienza" Italy Dept. of Computer Control and Management Engineering University of Rome "Sapienza" Italy Deep Blue Research and Consulting Rome Italy the Dept. Molecular Medicine University of Rome "Sapienza" Italy

ISBN: (纸本)9781424492695

In this study, we investigated the possibility to evaluate the impact of different avionic technologies on the mental workload of helicopter's pilots by measuring their brain activity with the EEG during a series of simulated missions carried out at AgustaWestland facilities in Yeovil (UK). The tested avionic technologies were: i) Head-Up Display (HUD);ii) Head-Mounted Display (HMD);iii) Full Conformal symbology (FC);iv) Flight Guidance (FG) symbology;v) Synthetic Vision System (SVS);and vi) Radar Obstacles (RO) detection system. It has been already demonstrated that in cognitive tasks, when the cerebral workload increases the EEG power spectral density (PSD) in theta band over frontal areas increases, and the EEG PSD in alpha band decreases over parietal areas. A mental workload index (MWL) has been here defined as the ratio between the frontal theta and parietal alpha EEG PSD values. Such index has been used for testing and comparing the different avionic technologies. Results suggested that the HUD provided a significant (p<.05) workload reduction across all the flight scenarios with respect to the other technologies. In addition, the simultaneous use of FC and FG technologies (FC+FG) produced a significant decrement of the workload (p<.01) with respect to the use of only the FC. Moreover, the use of the SVS technology provided on Head Down Display (HDD) with the simultaneous use of FC+FG and the RO seemed to produce a lower cerebral workload when compared with the use of only the FC. Interestingly, the workload estimation by means of subjective measures, provided by pilots through a NASA-TLX questionnaire, did not provide any significant differences among the different flight scenarios. These results suggested that the proposed MWL cognitive neurometrics could be used as a reliable measure of the user's mental workload, being a valid indicator for the comparison and the test of different avionic technologies.

关键词： HUD UK HMD

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P300 Latency Jitter occurrence in patients with disorders of consciousness: toward a better design for Brain computer interface applications

P300 Latency Jitter occurrence in patients with disorders of...

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Annual International Conference of the IEEE engineering in Medicine and Biology Society

作者： Francesca Schettini Monica Risetti Pietro Aricò Rita Formisano Fabio Babiloni Donatella Mattia Febo Cincotti the Dept. Computer Control and Management Engineering Antonio Ruberti University of Rome "Sapienza" and with the IRCCS Fondazione Santa Lucia Rome Italy the IRCCS Fondazione Santa Lucia Rome Italy the Dept. Physiology and Pharmacology University "Sapienza" of Rome Italy the Dept. Molecular Medicine University "Sapienza" of Rome Italy and BrainSigns srl. Rome Italy

ISBN: (纸本)9781424492695

In this study the P300 latency jitter has been explored in an EEG data set collected from a group of patients with disorders of consciousness (DOC;n=13) that was administered with an auditory Oddball paradigm under passive and active conditions. A method based on wavelet transform was applied to estimate single trial P300 waveforms. Preliminary results showed that 5 Vegetative State (VS) and 8 Minimally Conscious Staten (MCS) patients exhibited significantly higher values of P300 latency jitter as compared to those obtained from a control group of 12 healthy subjects. In addition, the magnitude of the P300 latency jitter negatively correlated with patients' clinical status. The existence of such phenomenon might substantially limit an effective use of Brain computer Interface systems for communication.

关键词： EEG SSVEPs PARAFAC

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FPGA Implementation of Vision-Based Fingertip-Writing Digits Recognition System

FPGA Implementation of Vision-Based Fingertip-Writing Digits...

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IEEE International Conference on Systems, Man and Cybernetics

作者： Ching-Long Shih Bing-Lin Yang Wen-Yo Lee Ti-Hung Chen Bo-Jhih Chen Yi-Chih Fan Department of Electrical Engineering National Taiwan University of Science and Technology Taipei Taiwan Department of Computer Network and Engineering Lunghwa University of S. and T. Taoyuan Taiwan Tristan Dept. Industrial Technology Research Institute Embedded Control System

This paper presents a vision-based fingertip writing digits detection and recognition system using a CMOS camera and FPGA implementation. It is a real-time signature detector, since the image process algorithms are all executed in Verilog code. The experimental results show that the system can successfully recognize fingertip-numeral-writing with a accuracy rate of 95.8%.

关键词： Image color analysis Feature extraction CMOS integrated circuits Skin Field programmable gate arrays Trajectory Image recognition

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Abstracts from the 1st International Symposium on Decision Support in Anaesthesia and Intensive Care

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International journal of clinical monitoring and computing 2016年第1期14卷 49-68页

作者： D. Streifert N. Lutter E. Van der Vorst J. Mulier B. Schwilk U. Bothner R. Muche W. Friesdorf K. J. Ruskin A. F. de Geus G. E. Wiersma R. Huet H. Neuffer F. Fischer U. J. Christensen P. F. Jensen J. Jacobsen H. Ørding A. M. Brambrink V. Goel D. F. Hanley K. Becker H. D. Shaffner L. J. Martin N. V. Thakor R. C. Koehler R. J. Traystman M. Quintel M. Apin J. Martin M. Messelken R. Dieterle-Paterakis J. Hiller P. Milewski H. Gross U. Foehring N. Weiler B. Eberle W. Heinrichs W. Höltermann M. van Wickern D. M. Linton J. J. Ross D. G. Mason M. D. Pullman N. D. Edwards M. Doi R. J. Gajraj H. Mantzardis G. N. C. Kenny R. Markgraf G. Deutschinoff L. Pientka T. Scholten J. Maljers St. Walther A. Santevecci R. Ranieri Department of Anaesthesiology University of Erlangen-Nuernberg Erlangen Germany University Hospital Gasthuisberg B Leuven Belgium Department of Anaesthesiology University of Ulm Ulm Germany Yale University School of Medicine New Haven USA Department of Anesthesiology University Hospital Groningen RB The Netherlands Dept. Computer-Aided Circuit Design University of Erlangen-Nuernberg Erlangen Germany Dept. of Anaesthesiology Herlev Hospital University of Copenhagen Herlev Denmark Department of Anaesthesiology Johannes Gutenberg-University Medical School Mainz Germany The Johns Hopkins Medical Institution Baltimore USA Institut für Anästhesiolgie und operative Intensivmedizin Klinikum Mannheim Fakultät für klinische Medizin Universität Heidelberg Heidelberg Germany Department for Anaesthesiology and Intensive Care Medicine Hospital “Am Eichert” Goeppingen Germany Physikalisch-Technische Bundesanstalt Berlin Germany Klinik für Anaesthesiologie & Operative Intensivmedizin Klinikum Benjamin Franklin Freie Universitaet Berlin Berlin Germany Department of Anaesthesia and Intensive Care Medicine University Hospital Marburg Germany Medical Intensive Care Department of Medicine Hadassah Medical Organisation Jerusalem Israel Department of Anaesthetics University of Sheffield Northern General Hospital Sheffield UK Department of Automatic Control & Systems Engineering University of Sheffield Sheffield UK University Department of Anaesthesia HCI International Medical Centre Glasgow UK Department of Internal Medicine Allgemeines Krankenhaus für die Stadt Hagen University of Witten/Herdecke Witten Germany Plexus Medical Group Amsterdam Amsterdam The Netherlands Network Division USA Dept. of Anesthesiology and Intensive Care Università Cattolica del Sacro Cuore - Roma (Italy) Italy

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Design and evaluation of real-time GNSS attitude determination systems using low cost receivers

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Transactions of the Korean Institute of Electrical Engineers 2014年第9期63卷 1259-1265页

作者： Chae, Jeong Geun Lee, Dong Sun Kang, In-Suk Park, Chansik Dept. of Control and Robot Engineering Research Institute of Computer Information and Communication Chungbuk National University Korea Republic of SAMYUNG ENC Co. Ltd. Korea Republic of

In this paper, the real-time attitude determination based Matlab using low-cost receivers was designed and evaluated. The GNSS attitude determination system was implemented to operation in real-time by TimerCailback in MATLAB. The TTM(Transniission Time Misalignment) of U-blox receiver was confirmed through zero baseline tests and this problem was revised, The computed attitude by the high-cost NovAtel receiver was compared to the computed attitude by the low-cost U-blox receiver. As a result of this, the performance of attitude determination systems by low-cost receiver was confirmed. To determine baseline, LAMBDA and BC-LAMBDA for integer ambiguities search methods were used. To confirm suitable integer ambiguity search method in real-time attitude determination algorithm, determined baselines by two methods were compared, and it was confirmed that BC-LAMBDA is more suitable. As a result of this, the operation of real-time attitude determination system was confirmed using 3 low-cost receivers.

关键词： Costs

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