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IEEE International Symposium on Embedded Multicore Socs (MCSoC)

作者： Gianvito Urgese Francesco Barchi Enrico Macii Dept. of Control and Computer Engineering - DAUIN Politecnico di Torino Address: C.so Duca degli Abruzzi Torino Italy

In this paper we present a top-down methodology aimed at evaluating the scalability of Spiking Neural Network (SNN) simulations on massively many-core and densely interconnected platforms. Spiking neural networks mimic brain activity by emulating spikes sent among neurons populations. Many-core platforms are emerging computing targets to achieve real-time simulation SNN. Neurons are mapped to parallel cores and spikes are sent over the on-chip and off-chip network. However, due to the heterogeneity and complexity of neuron population activity, achieving an efficient exploitation of platforms resources is a challenging problem, often impacting simulation reliability and limiting the biological network size. To address this challenge, the proposed methodology, based on customized SNN configurations, extracts detailed profiling information about network usage of on-chip and off-chip resources. We first show the results of the application of our methodology to the SpiNNaker neuromorphic many-core platform. Then, we demonstrate how the profiling information can be used to improve the reliability of biologically plausible SNN simulations.

关键词： Neurons Sociology Statistics Biological system modeling Brain modeling Analytical models Routing

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Weld seam recognition based on CCD image processing

International Journal of Signal Processing, Image Processing...

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International Journal of Signal Processing, Image Processing and Pattern Recognition 2015年第6期8卷 245-252页

作者： Yu, Jintao Li, Xian Ding, Mingli Dong, Shicheng Li, Junling School of Computer and Information Engineering Harbin University of Commerce Harbin China Dept. of Automatic Test and Control Harbin Institute of Technology Harbin China

Weld seam recognition is the key technique in visual tracking research. Based on the weld image features, the image preprocessing and the linear feature extraction method of the weld seam recognition are designed. The extended adaptive median filtering method and modified Otsu adaptive threshold selection method for image segmentation are used in the image pre-processing process, to remove the noise and compress the image data. Through comparing with several other edge operators, the Roberts operator is chosen to achieve the goal of detecting the welding edge. Finally, the weld seam information is extracted through Hough transform and a satisfied result can be acquired. The study provides a theoretical support for the following designing of the weld tracking system. © 2015 SERSC.

关键词： Welds

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Flight envelope information-augmented display for enhanced pilot situation awareness

Flight envelope information-augmented display for enhanced p...

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AIAA Infotech @ Aerospace 2015

作者： Ackerman, Kasey A. Seefeldt, Benjamin D. Xargay, Enric Talleur, Donald A. Carbonari, Ronald S. Kirlik, Alex Hovakimyan, Naira Trujillo, Anna C. Gregory, Irene M. University of Illinois at Urbana-Champaign UrbanaIL61801 United States NASA Langley Research Center HamptonVA23681 United States Dept. of Mechanical Science and Engineering United States Dept. of Computer Science United States Institute of Aviation United States Beckman Institute United States Crew Systems and Aviation Operations Branch United States Dynamic Systems and Control Branch United States

ISBN: (纸本)9781624103384

This paper presents an interface system display which is conceived to improve pilot situation awareness with respect to a flight envelope protection system developed for a mid-sized transport aircraft. The new display is designed to complement existing cockpit displays, and to augment them with information that relates to both aircraft state and the control automation itself. In particular, the proposed display provides cues about the state of automation directly in terms of pilot control actions, in addition to flight parameters. The paper also describes a forthcoming evaluation test plan that is intended to validate the developed interface by assessing the relevance of the displayed information, as well as the adequacy of the display layout. © 2015, American Institute of Aeronautics and Astronautics Inc. All rights received.

关键词： Flight envelopes

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Merging partially consistent maps

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8810卷 352-363页

作者： Iocchi, Luca Dept. of Computer Control and Management Engineering Sapienza University of Rome Via Ariosto 25 Rome00185 Italy

Learning maps from sensor data has been addressed since more than two decades by Simultaneous Localization and Mapping (SLAM) systems. Modern state-of-the-art SLAM approaches exhibit excellent performances and are able to cope with environments having the scale of a city. Usually these methods are entailed for on-line operation, requiring the data to be acquired in a single run, which is not always easy to obtain. To gather a single consistent map of a large environment we therefore integrate data acquired in multiple runs. A possible solution to this problem consists in merging different submaps. The literature proposes several approaches for map merging, however very few of them are able to operate with local maps affected by inconsistencies. These methods seek to find the global arrangement of a set of rigid bodies, that maximizes some overlapping criterion. In this paper, we present an off-line technique for merging maps affected by residual errors into a single consistent global map. Our method can be applied in combination with existing map merging approaches, since it requires an initial guess to operate. However, once this initial guess is provided, our method is able to substantially lessen the residual error in the final map. We validated our approach on both real world and simulated datasets to refine solutions of traditional map merging approaches. © Springer International Publishing Switzerland 2014.

关键词： Merging

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Using augmented measurements to improve the convergence of ICP

Lecture Notes in Computer Science (including subseries Lectu...

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Lecture Notes in computer Science (including subseries Lecture Notes in Artificial Intelligence and Lecture Notes in Bioinformatics) 2014年 8810卷 566-577页

作者： Serafin, Jacopo Grisetti, Giorgio Dept. of Computer Control and Management Engineering Sapienza University of Rome Via Ariosto 25 Rome00185 Italy

Point cloud registration is an essential part for many robotics applications and this problem is usually addressed using some of the existing variants of the Iterative Closest Point (ICP) algorithm. In this paper we propose a novel variant of the ICP objective function which is minimized while searching for the registration. We show how this new function, which relies not only on the point distance, but also on the difference between surface normals or surface tangents, improves the registration process. Experiments are performed on synthetic data and real standard benchmark datasets, showing that our approach outperforms other state of the art techniques in terms of convergence speed and robustness. © 2014 Springer International Publishing Switzerland.

关键词： Iterative methods

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Bus-based content downloading for Vehicular Ad Hoc Networks

Bus-based content downloading for Vehicular Ad Hoc Networks

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International Conference on Connected Vehicles and Expo (ICCVE)

作者： Zhe Wang Zhangdui Zhong Minming Ni Chih-Yung Chang State Key Laboratory of Rail Traffic Control and Safety Beijing Jiaotong University Beijing China Dept. Computer Science and Information Engineering Tamkang University Taiwan

Vehicular Ad Hoc Networks (VANETs) represent promising technologies for comfort driving and entertainment applications which rely heavily on the data downloading. Due to the rapid change of network topology and intermittent connection, it is a big challenge to satisfy the download requirements from multi-vehicles at the same time. This paper proposes a Bus-Based Content Downloading (BBCD) which aims to maximize the volume of downloaded data from bus to vehicles while the download opportunity fairness of each vehicle is taken into consideration. By predicting the number of buses which the vehicle would encounter in its future path and estimating the connection duration that the vehicle stays in the coverage of bus, the proposed BBCD schedules the download service for vehicles slot by slot such that the volume of downloaded data can be guaranteed while achieving the download opportunity fairness. The effectiveness of the proposed algorithm is evaluated by extensive simulations.

关键词： Vehicles Roads Vehicular ad hoc networks Wireless communication Connected vehicles Schedules

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Nuclear Human research development in National Institutes of Technology

Nuclear Human research development in National Institutes of...

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International Conference on engineering Education (ICEED)

作者： Seiji Kino Eiji Takada Hideki Tenzou Fumito Sakamoto Atsushi Minoda Shigekazu Suzuki Seiki Saito Itaru Nakamura Chisato Mouri Yasuo Ohta National Institute of Technology Japan Executive Director Tokyo Japan Dept. of Electrical and Control Systems Engineering National Institute of Technology Toyama Japan Dept. of Electronic Systems Engineering National Institute of Technology Mitoyo Japan Dept. of Electrical and Computer Engineering National Institute of Technology Akita Japan Dept. of Electrical Engineering and Computer Science National Institute of Technology Matsue Japan Dept. of Mechanical Engineering National Institute of Technology Iwaki Japan Dept. of Electrical Engineering National Institute of Technology Kushiro Japan Dept. of Electrical and Electronic Engineering National Institute of Technology Kirishima Japan Kagawa College National Institute of Technology Mitoyo Japan Head Office for Research Strategy Nagaoka University of Technology Nagaoka Japan

In the field of nuclear engineering, national colleges have been carrying out important roles with about 10 % of graduates obtaining jobs in nuclear related companies. Although national colleges do not have special courses and classes for nuclear engineering, we have been trying to educate our students in cooperation with universities and industries through the activities of the Japan Nuclear Human Resource Development Network. With aide from the Ministry of Education, Culture, Sports, Science and Technology, we have been developing a short term curriculum for nuclear education consisting of lectures, experiments and facility tours. Moreover, we have developed a textbook for nuclear engineering basics and texts for experiments. In order to let the students understand the background of radiation, radiation dose measurements have been conducted by the students of more than 33 colleges. In the fiscal year of 2015, a new trial of remote lecture connecting 51 national colleges began. Through these education programs, we aim to help our students to understand radiation and nuclear engineering correctly, and to have their own opinions on this important matter.

关键词： Physics Conferences Inductors engineering education Companies Industries

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Frequency Domain Analysis of HOSM Systems

Frequency Domain Analysis of HOSM Systems

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IEEE Annual Conference on Decision and control

作者： Antonio Rosales Yuri Shtessel Leonid Fridman Chandrasekhara Bharath Panathula Electrical and Computer Engineering Dept. The University of Alabama in Huntsville Huntsville AL 35899 USA Deparment of Control and Robotics Faculty of Engineering National Autonomus University of Mexico 4510 Mexico City Mexico

ISBN: (纸本)9781479978878

The frequency domain analysis of dynamically perturbed Higher Order Sliding Mode (HOSM) systems is tackled using Describing Function (DF) and Harmonic Balance (HB) techniques. The goal of this analysis is to study possible limit cycles in such systems. DFs of Nested 3rd and 4th order algorithms are obtained for the first time. Then, HB equation is used to analyze the real sliding motion in the HOSM system, where the sliding set converges to a limit cycle. Chattering (limit cycle) in the HOSM systems is studied, and the chattering parameters (amplitude and frequency) are computed. A definition of Tolerance Limits, which characterizes the acceptable performance in the real HOSM system, is applied to verify if the chattering parameters fit the amplitude and frequency limits. Next, Performance Phase Margin and Performance Gain Margin definitions, which give the metrics for robustness of real HOSM to unmodeled dynamics, are applied to assess the robustness of the limit cycle emerged in the real HOSM system. Examples and simulations that validate the obtained results are presented.

关键词： Sliding Mode control Frequency Domain Analysis Performance Margins Variable structure systems limit cycles CHATTER unmodeled dynamics

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Decentralised Intermittent control

Decentralised Intermittent Control

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Conference on control Applications

作者： Peter Gawthrop Liuping Wang Erik Weyer Dept. of Electrical and Electronic Engineering The University of Melbourne VIC 3010 Australia Discipline of Electrical Energy and Control Systems School of Electrical and Computer Engineering RMIT University Melbourne Victoria 3000 Australia

ISBN: (纸本)9781479977970

Intermittent control uses open-loop control punctuated with feedback at times determined by error-driven events. The open-loop trajectories are based on an underlying closed-loop strategy and are generated by a system-matched hold. The single-loop event-driven intermittent control method is extended to the multi-loop decentralised control situation. This decentralised intermittent controller is based on an underlying continuous-time decentralised design which is suitable for systems with both input and state interactions. This extension is achieved by using local models of the remote interacting subsystems. These models are used for control signal generation and they are only updated with remote information at discrete event-driven sample times thus reducing information flow. The approach is illustrated using a simulation of a live-pool irrigation channel model previously examined in the literature.

关键词： generated system-matched literature

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A tool-chain to foster a new business model for photovoltaic systems integration exploiting an Energy Community approach

A tool-chain to foster a new business model for photovoltaic...

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IEEE Conference on Emerging Technologies and Factory Automation

作者： Lorenzo Bottaccioli Edoardo Patti Andrea Acquaviva Enrico Macii Matteo Jarre Michel Noussan Dept. of Control and Computer Engineering Dept. of Energy. Politecnico di Torino

ISBN: (纸本)9781467379304

New approaches and business models for the development of renewable sources are needed as an alternative to feed-in tariffs. In this work, we present a tool-chain based on a distributed infrastructure for planning renewable energy systems deployment. This solution aims at fostering new services and business models by promoting energy community actions. Such tool-chain is able to: i) evaluate the photovoltaic potential of the rooftops of a community;ii) perform economic assessments of distributed photovoltaic system plants considering a "community based business model". As case study, we considered a foothill community in north-west of Italy in which the tool-chain performed economic and energetic analyses. In order to integrate the proposed business model in the Italian regulatory framework, we analysed the Italian laws for electricity distribution and operation, highlighting the limitations in integrating such community approach.

关键词： Energy Community Business models Photovoltaic Regulatory Framework Smart Grid

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