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IEEE International Forum on Research and Technologies for Society and Industry Leveraging a better tomorrow (RTSI)

作者： P. Sangregorio A. L. Cologni F. C. Owen F. Previdi The Control and Automation Laboratory of the department of management Information and production engineering of Università degli Studi di Bergamo Dalmine Italy The department of mechanical engineering of the California Polytechnic State University San Luis Obispo CA USA

The increasing of globalization requires companies to ship their machines all over the world. This growth of exportation of manufacturing systems increased costs of maintenance due to the requirement of sending technicians to the production site where the machine is installed. The strong spread of mobile devices and the increased quality of networks opened new horizons for maintenance and support services. The work presented in this paper describes a real application case and proposes an approach for using mobile internet devices (MID) on the production site for acquisition and transmission of multi-source information that can be used from service personnel to try to resolve issues from the vendor service center. The purpose of this article is to present an approach to implement a remote maintenance system based on a mobile platform that allows hybrid (video and telemetry) logging.

关键词： Maintenance engineering Logic gates Synchronization Personnel Manufacturing IEEE 802.11 Standard

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Measurement strategies in optical 3-D surface measurement with focus variation

Measurement strategies in optical 3-D surface measurement wi...

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11th IMEKO TC14 Symposium on Laser Metrology for Precision Measurement and Inspection in Industry, LMPMI 2014

作者： Tian, Yingzhong Weckenmann, Albert Hausotte, Tino Schuler, Alexander Bin, H.E. School of Mechatronic Engineering and Automation Shanghai Key Laboratory of Manufacturing Automation and Robotics Shanghai University China Department of Quality Management and Manufacturing Metrology University Erlangen-Nuremberg Germany Institute of Manufacturing Metrology University Erlangen-Nuremberg Germany

ISBN: (纸本)9781632667311

Focus variation is an optical contact-free method that allows the measurement of three-dimensional surface metrology using optics with limited depths of field and vertical scanning. It was documented in the ISO 25178-6 first time in *** one method of image capture, it has very crucial influence to get an excellent quality image that some key parameters are selected correctly for different workpiece. Those key parameters are including the exposure time, contrast, filters and so on. In this paper, a few of applications were selected to demonstrate the capabilities of the system using different measurement parameters including measurements on cutting-insert tool, stainless steel ball, stepped workpiece and VDI standard workpiece with silver colour surface. Some principles were concluded for optical three-dimensional surface measurement with focus variation after comparing the practical results with different parameters, serving as measurement strategies.

关键词： Surface measurement

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A Robust Scheduling Approach for a Single Machine to Optimize a Risk Measure

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Procedia CIRP 2014年 19卷 148-153页

作者： Marcello Urgo József Váncza Manufacturing and Production Systems Laboratory Mechanical Engineering Department Politecnico di Milano Milano Italy Fraunhofer Project Center for Production Management and Informatics Computer and Automation Research Institute Hungarian Academy of Sciences Budapest Hungary Department of Manufacturing Science and Technology Budapest University of Technology and Economics Budapest Hungary

Robustness in scheduling addresses the capability of devising schedules which are not sensitive – to a certain extent – to the disruptive effects of unexpected events. The paper presents a novel approach for protecting the quality of a schedule by taking into account the rare occurrence of very unfavourable events causing heavy losses. This calls for assessing the risk associated to the different scheduling decisions. In this paper we consider a stochastic scheduling problem with a set of jobs to be sequenced on a single machine. The release dates and processing times of the jobs are generally distributed independent random variables, while the due dates are deterministic. We present a branch-and-bound approach to minimize the Value-at-Risk of the distribution of the maximum lateness and demonstrate the viability of the approach through a series of computational experiments.

关键词： Robust Scheduling Risk Manufacturing-to-Order production

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Measurement strategies in optical 3-D surface measurement with focus variation

Measurement strategies in optical 3-D surface measurement wi...

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11th IMEKO TC14 International Symposium on Measurement and Quality Control, ISMQC 2013

作者： Tian, Yingzhong Weckenmann, Albert Hausotte, Tino Schuler, Alexander He, Bin School of Mechatronic Engineering and Automation Shanghai Key Laboratory of Manufacturing Automation and Robotics Shanghai University China Department of Quality Management and Manufacturing Metrology University Erlangen-Nuremberg Germany Institute of Manufacturing Metrology University Erlangen-Nuremberg Germany

关键词： Surface measurement

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Testing Controllers on ALE III: A Low Cost mini Autonomous Underwater Vehicle

Testing Controllers on ALE III: A Low Cost mini Autonomous U...

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Mediterranean Conference on Control & automation

作者： Savas Piperidis Nikos C. Tsourveloudis Department of Production Engineering and Management Intelligent Systems and Robotics Laboratory Technical University of Crete

ISBN: (纸本)9781479909964

This paper presents ALE III, a low cost Autonomous Underwater Vehicle and its potential for experimentation inside a typical research laboratory. ALE III is equipped with sensors and actuators that facilitate real, not simulated testing. The vehicle uses custom made as well as 'off the self' components and minimalistic design solutions suitable for experimentation, as evidenced from various control methodologies.

关键词： underwater vehicles atomic layer epitaxial growth experimentation Autonomous underwater vehicles Control Methods vehicle actuators model cars Controllers Sensors

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Intervals' Numbers (INs) interpolation/extrapolation

Intervals' Numbers (INs) interpolation/extrapolation

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IEEE International Conference on Fuzzy Systems (FUZZ-IEEE)

作者： V. G. Kaburlasos G. A. Papakostas Th. Pachidis Alex. Athinellis Human-Machines Interaction (HMI) Laboratory Department of Industrial Informatics TEI of Kavala Kavala Greece Robotics and Automation Laboratory Department of Production Engineering and Management Democritus University of Thrace Xanthi Greece

An Intervals' Number (IN) is a mathematical object known to represent either a probability distribution or a possibility distribution. The space of INs has been studied during the last years. After summarizing some instrumental mathematical results, this work demonstrates comparatively novel schemes for tunable fuzzy rule interpolation and extrapolation. Extensions to Type-2 fuzzy sets are straightforward. Finally, this work demonstrates a preliminary application, regarding the reconstruction of partially occluded human facial expressions, based on a neural network that may predict a data distribution from other ones. Far reaching extensions of the proposed techniques are discussed.

关键词： Lattices Interpolation Measurement Extrapolation Fuzzy sets Laboratories Electronic mail

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Color image watermarking via Quaternion Radial Tchebichef Moments

Color image watermarking via Quaternion Radial Tchebichef Mo...

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IEEE International Workshop on Imaging Systems and Techniques (IST)

作者： E. D. Tsougenis G. A. Papakostas D. E. Koulouriotis E. G. Karakasis D.A. Karras Department of Production Engineering and Management Democritus University of Thrace Xanthi Greece Department of Industrial Informatics Human-Machines Interaction (HMI) Laboratory Kavala Greece Automation Department Chalkis Institute of Technology Chalkida Greece

This paper introduces a new set of 2D transforms, called Quaternion Radial Tchebichef Moments (QRTMs), in color image watermarking. The proposed scheme constitutes the first attempt in moment-based color image watermarking. The watermark logo information is iteratively embedded enhancing its integrity with the application of the majority-vote decision rule in the detector side. Scheme's robustness and imperceptibility, two of the most crucial issues in image watermarking, are investigated under desynchronization and common signal processing attacks including rotation, scaling, JPEG compression, additive noise and median filtering. QRTMs have no numerical instabilities and stay robust under the majority of the attacking conditions overcoming the performance of a recently proposed color image watermarking's scheme. Moreover the image assessment of the produced watermarked images proves the high level of imperceptibility.

关键词： Watermarking Color Robustness Quaternions Transform coding Filtering Signal processing

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Optimum multi-camera arrangement using a bee colony algorithm

Optimum multi-camera arrangement using a bee colony algorith...

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2012 IEEE International Conference on Imaging Systems and Techniques, IST 2012

作者： Chrysostomou, Dimitrios Gasteratos, Antonios Laboratory of Robotics and Automation Department of Production and Management Engineering Democritus University of Thrace Vasilissis Sophias 12 GR-671 00 Xanthi Greece

ISBN: (纸本)9781457717741

This paper presents a new method for designing multi-camera arrangements with aim to maximize coverage with the minimum number of cameras. More specifically, the presented problem has three different components, namely (a) to maximize the coverage subject to a given number of cameras (b) to optimize the camera topology given fixed locations and (c) to minimize the cost of the arrangement, while the least required percentage of coverage is provided. In order to solve these problems, a bee colony algorithm is utilized as an optimization technique that is able to determine the minimum number of cameras needed to cover the given space completely while taking into consideration the minimum possible cost for the proposed arrangement as well. The algorithm employs several camera placement constraints referring to geometrical, optical as well as reconstructive limitations and delivers promising preliminary results. © 2012 IEEE.

关键词： Cameras

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Optimum multi-camera arrangement using a bee colony algorithm

Optimum multi-camera arrangement using a bee colony algorith...

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IEEE International Workshop on Imaging Systems and Techniques (IST)

作者： Dimitrios Chrysostomou Antonios Gasteratos Laboratory of Robotics and Automation Department of Production and Management Engineering Democritus University of Thrace Xanthi Greece

关键词： Cameras Optimization Topology Sociology Statistics Optical sensors Lenses

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Object recognition using saliency maps and HTM learning

Object recognition using saliency maps and HTM learning

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2012 IEEE International Conference on Imaging Systems and Techniques, IST 2012

作者： Kostavelis, Ioannis Nalpantidis, Lazaros Gasteratos, Antonios Laboratory of Robotics and Automation Department of Production and Management Engineering Democritus University of Thrace Vas. Sofias 12 GR-67100 Xanthi Greece Computer Vision and Active Perception Lab. Centre for Autonomous Systems Royal Institute of Technology - KTH SE-100 44 Stockholm Sweden

ISBN: (纸本)9781457717741

In this paper a pattern classification and object recognition approach based on bio-inspired techniques is presented. It exploits the Hierarchical Temporal Memory (HTM) topology, which imitates human neocortex for recognition and categorization tasks. The HTM comprises a hierarchical tree structure that exploits enhanced spatiotemporal modules to memorize objects appearing in various orientations. In accordance with HTM's biological inspiration, human vision mechanisms can be used to preprocess the input images. Therefore, the input images undergo a saliency computation step, revealing the plausible information of the scene, where a human might fixate. The adoption of the saliency detection module releases the HTM network from memorizing redundant information and augments the classification accuracy. The efficiency of the proposed framework has been experimentally evaluated in the ETH-80 dataset, and the classification accuracy has been found to be greater than other HTM systems. © 2012 IEEE.

关键词： Object recognition

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