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15th ASME International Manufacturing Science and Engineering conference (MSEC)

作者： Qiao, Guixiu Garner, Jonathan NIST Gaithersburg MD 20899 USA Univ Maryland College Pk MD 20742 USA

ISBN: (纸本)9780791884751

Manufacturers currently struggle with the assessment of a machine/robots' accuracy degradation that limits the efficiency of machine/robots in high precision applications. Current best practice in industry is to inspect the final products or add redundancies (local calibration, etc.) during the process to determine the machine's accuracy and performance. These create complexities in the process and increase the maintenance costs of applications such as high precision robot operations (welding, robotic drilling/riveting, and composite material layout), in-process metrology, and machines in mobile applications. A higher speed, more precise control of position and orientation is required to remedy these complexities. A novel smart target was designed at the National Institute of Standards and Technology (NIST) to integrate with a vision system to acquire high-accuracy, real-time 6-D (six-dimensional x, y, and z position, roll. pitch, and yaw orientation) information. This paper presents the development of the smart target and the image processing algorithm to output 6-D information. A use case is presented using the smart target on universal robots (UR3 and UR5) to demonstrate the feasibility of using the smart target to perform the robot accuracy assessment.

关键词： Advanced Sensing Condition Monitoring diagnostics Prognostics Maintenance Health Management Industrial Robot Systems Performance Degradation

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Practical Aspects of Ensuring Accuracy of Machining on CNC Machine Tools within Framework of 'Smart Manufacturing'

Practical Aspects of Ensuring Accuracy of Machining on CNC M...

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2020 International Russian Automation conference, RusAutoCon 2020

作者： Martinova, Liliya Obukhov, Aleksandr Sokolov, Sergey Mstu Stankin Department of Computer Control Systems Moscow Russia

ISBN: (纸本)9781728161303

The paper presents practical aspects of insuring the accuracy of manufacturing parts on CNC machine tools operating in "Smart manufacturing". A model is described that reflects quantitative and logical relationships between variables that characterize the state of controlled parameters of technological operations. The concept of preventive maintenance of machine tools based on operational monitoring of their condition is presented. This allows, on the one hand, to avoid unexpected downtime of equipment because of breakdowns. On the other hand, it means a more reasonable approach to planning preventive maintenance of equipment operability. The concept of the information system for the predicted maintenance of process equipment is based on the model of correspondence between the characteristics obtained from external measuring instruments (fixed at the commissioning stage) and measurements obtained from the equipment diagnostics tools, integrated into the control system, during its operation. © 2020 IEEE.

关键词： Machine tools

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Characteristic of Functional Subsystems of Electrical Grid control Centers

Characteristic of Functional Subsystems of Electrical Grid C...

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International Ural conference on Electrical Power Engineering (UralCon)

作者： Zolin, D. S. Ryzhkova, E. N. Natl Res Univ MPEI Moscow Russia

ISBN: (数字)9781728162096

ISBN: (纸本)9781728162096

This paper proposes a new design technology that uses a morphological matrix of the basic structures and their structural components to help develop a full-scale hierarchical IMS architecture based on automated process control systems at 110+ kV substations of 110 kV or 35 kV and 110 kV APCS's utilized by regional grid companies. To adopt advanced systems for diagnosis and power monitoring of 110+ kV output transformers, one needs to prove such adoption feasible, to use optics and SMART grid technologies;such adoption determines further grid development and serves better grid monitoring and automation. Equipment visualization helps evaluate its condition and decide reasonably on how to maintain it. The paper describes a novel method for displaying diagnostic data, which generates a cognitive graphical image of a code matrix on the address space of the ROM;the image shows normalized equivalents of multiple optimal control states to save 5% to 40% of electricity making the equipment more energy-efficient at minimum energy costs. To effectively implement the diagnostic system and to use state-of-theart method for monitoring the main equipment of the power grid complex, one needs a uniform integrated approach to diagnostics based on proven and methodologically sound technological solutions that enable condition-appropriate maintenance and repair.

关键词： smart electronic device IEC61850 functional subsystem

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Journal of Physics: conference Series

Journal of Physics: Conference Series

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International conference on Engineering Systems 2020, ICES 2020

The proceedings contain 40 papers. The topics discussed include: simplified selection of optimal shell in shape of translational surface;numerical simulation of gas propagation process behind a shock wave during optical breakdown of air in a cylindrical channel;systems thinking ontology of emergent properties for complex engineering systems;the effectiveness of symbolic integer splitting method over both synchronous stream ciphers and perfectly secret ciphers;voice signal analysis techniques for cognitive decline (stress) assessment;assessment of the durability of corrosion-damaged prefabricated reinforced concrete structures;construction cost control and duration analysis of rehabilitation project;cyber-physical predictive diagnostics system for servos of mobile construction robots;and planning of an experimental research of the organization of townhouses' construction.

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ACTIVE-MATRIX DIGITAL MICROFLUIDICS PLATFORM FOR SINGLE CELL GENERATION AND MANIPULATION 25

ACTIVE-MATRIX DIGITAL MICROFLUIDICS PLATFORM FOR SINGLE CELL...

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25th International conference on Miniaturized Systems for Chemistry and Life Sciences, MicroTAS 2021

作者： Hu, Siyi Shi, Subao Ye, Jingmin Chen, Chuyu Wang, Dongping Ma, Hanbin CAS Key Laboratory of Bio-Medical Diagnostics Suzhou Institute of Biomedical Engineering and Technology Chinese Academy of Sciences Suzhou215163 China Guangdong ACXEL Micro & Nano Tech Co. Ltd Guangdong province 528000 China

ISBN: (纸本)9781733419031

This study presents an active-matrix digital microfluidic platform for single-cell generation and manipulation based on large-area electronics technology. The active device contains 26,368 electrodes that can be independently addressed to perform multiple and simultaneous droplets manipulation. An on-chip handling limit of 500pL has been achieved, continuous and stable control of the droplet containing cells was demonstrated for over 1 hour. Furthermore, generation of 32 droplets with a success rate of more than 87.5% could be completed within 8 seconds, among which the probability of a single droplet containing single-cell was greater than 15.6%. © 2021 MicroTAS 2021 - 25th International conference on Miniaturized Systems for Chemistry and Life Sciences. All rights reserved.

关键词： Digital microfluidics

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A Track Towards Unsupervised Partial Discharge Inference in Electrical Insulation Systems

A Track Towards Unsupervised Partial Discharge Inference in ...

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IEEE Electrical Insulation conference (EIC)

作者： Ghosh, Riddhi Seri, Paolo Montanari, Gian Carlo Univ Bologna DEI Bologna Italy Florida State Univ CAPS Tallahassee FL 32306 USA

ISBN: (纸本)9781728154855

Measuring partial discharges in electrical insulation systems is becoming a standard procedure for quality control, qualification and commissioning of electrical apparatus. Even more important, partial discharges are the main property to be monitored to assess the health conditions of any organic insulation system. However, large part of the potentiality offered by partial discharge measurements is hindered by the need of experts to record, process and interpret data, which delays and even prevent from the diffusion of this diagnostic property. This paper presents a new algorithm which seems to be very effective in providing automatic separation of partial discharges from noise, which is the first step to develop a fully automatic and unsupervised diagnostic approach. Multi-dimensional signal decomposition is achieved resorting to various transformation applied to recorded pulses, including time and frequency domains, and entropy. Clusters thus obtained are separated by statistical and artificial intelligence algorithms. Applications to AC sinusoidal voltage supply are presented, highlighting that the proposed approach is valid also under DC and power electronics supply.

关键词： partial discharge noise rejection automatic separation clustering diagnostics condition monitoring

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Application of Next-Generation Motor Management Relays Improves System Reliability in process Industries

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IEEE TRANSACTIONS ON INDUSTRY APPLICATIONS 2019年第2期55卷 2121-2129页

作者： Durocher, David B. Hussey, Matthew R. Belzner, David E. Rizzi, Luigi Eaton Corp Wilsonville OR 97070 USA Eaton Corp Fayetteville NC 28306 USA Buzzi Unicem USA Inc Bethlehem PA 18017 USA

This paper describes advances in functionality of motor management relays in terms of both motor protection and predictive diagnostics. Network connectivity of these devices via high-speed Ethernet/IP allows real-time monitoring of system parameters, providing analytics to allow process industry users to better manage system processes to improve reliability, efficiency, and safety. A case study of a recent application of new motor management relays is included in this paper, offering producers a specific example of how new motor management relays are applied and outlining details involved to leverage the latest technologies.

关键词： Distributed control system (DCS) motor control center (MCC) motor management relay motor protection network connectivity predictive diagnostics programmable logic controller (PLC)

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Improving the credibility of pedagogical diagnostics in E-Learning

Improving the credibility of pedagogical diagnostics in E-Le...

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2020 International Scientific conference on Innovative Approaches to the Application of Digital Technologies in Education, SLET 2020

作者： Alipichev, Aleksei Nazarova, Liudmila Shingareva, Marina Siman, Aleksei Russian State Agrarian University Moscow Timiryazev Agricultural Academy Timiryazevskaya Str. 49 Moscow127550 Russia

The authors consider the problem of improving the credibility of diagnosing the learning outcomes of university students in the process of e-learning. The main solutions include improving material, technical and regulatory framework of e-learning, the use of proctoring - control and monitoring of distance certification tests, the enhancement of professional and pedagogical competence of lectures including those engaged in the implementation of digital teaching technologies, and their readiness for innovative activities in electronic information- and-educational environment, as well as the development and use of diagnostic materials complying with the requirements of credibility and validity. © 2020 Copyright for this paper by its authors.

关键词： E-learning

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Automation of diagnostics of Defects in the Outer Ring of a Rolling Bearing

Automation of Diagnostics of Defects in the Outer Ring of a ...

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2020 International Russian Automation conference, RusAutoCon 2020

作者： Lapshin, Viktor P. Turkin, Ilia A. Koba, Yaroslav D. Don State Technical University Dept. Industrial Process Automation Rostov-on-Don Russia

ISBN: (纸本)9781728161303

Modern bearings used in spindle assemblies of metal cutting machines for low vibration conditions on such machines shall provide low vibration machining modes. However, there are often situations where such bearings, even new ones, have some defects. One of the most common defects to date is a defect in the internal or external ring of the separator. The spindle itself, which may lose alignment, may be defective from the point of ensuring the absence of vibrations, in which case beats at the speed of the spindle will be observed in the machine. Proposed method of automatic control of bearings of spindle assembly makes it possible to estimate degree of defect of bearing separator outer ring by vibration dynamics of spindle rotation in metal cutting machine, as well as to estimate presence or absence of beats caused by misalignment of spindle. The automated control method itself is based on the use of signal filtering, in the range of interest to us in terms of finding a specific fault. © 2020 IEEE.

关键词： Defects

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Design of the high field side antenna of the new reflectometric system for plasma position estimate in RFXmod2

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JOURNAL OF INSTRUMENTATION 2022年第1期17卷 C01002-C01002页

作者： Marchiori, G. Cavazzana, R. De Masi, G. Moresco, M. Univ Padua Consorzio RFX CNR Ist Nazl Fis NuclENEAAcciaierie Venete SpA Corso Stati Uniti 4 I-35127 Padua Italy

A reflectometric system will be installed in the RFX-mod2 experiment, consisting of 4 couples of transmitting/receiving antennas working in the range 16-26.5 GHz in X-mode wave propagation for tokamak discharges. They will be placed within dedicated plasma accesses in the same poloidal section at 4 equispaced poloidal positions, two on the equatorial plane, High Field Side (HFS)/Low Field Side (LFS), and two at the vertical top/bottom ports. This configuration was conceived to perform plasma position control experiments without using the magnetic measurement signals. While the accesses in LFS, top and bottom positions will accommodate pyramidal antennas, the strict room constraints in the HFS position required a special routing of the feeding waveguide and the design of a different type of antenna, described in the paper. The horn reflector (also named hoghorn) type was preferred which allows radiating (and receiving) a beam at a 90 degrees direction with respect to the horn axis, which will be perpendicular to the equatorial plane. After fixing a reference working frequency f = 21 GHz (wavelength lambda = 14.3 mm), an antenna fitting the available room was designed by means of the COMSOL Multiphysics Radio Frequency module. Four different versions were developed by introducing some modifications of the aperture shape to study their effect on the antenna performance. FEM analyses were run for frequencies in the 17-26 GHz interval to characterize the frequency response in terms of radiative patterns of the total and far electric field. The directivity of the antennae was also evaluated. The 4 versions exhibited comparable responses and the observed beam directional properties at the expected plasma distance were considered acceptable for the development of this application. A prototype of the antenna has been realized by additive manufacturing process.

关键词： Microwave Antennas Models and simulations Plasma diagnostics - probes

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