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检索条件"任意字段=Conference on Process Control and Diagnostics"

共 1528 条记录，以下是131-140 订阅

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Assisting Automated Fault Detection and diagnostics in Building Automation Through Semantic Description of Functions and process Data 21

Assisting Automated Fault Detection and Diagnostics in Build...

引用

ACM International conference on Systems for Energy-Efficient Built Environments (BuildSys)

作者： Ramanathan, Ganesh Husmann, Maria Niedermeier, Christoph Vicari, Norbert Garcia, Kimberly Mayer, Simon Siemens AG Zug Switzerland Siemens AG Munich Germany Univ St Gallen St Gallen Switzerland

ISBN: (纸本)9781450391146

Building automation (BA) systems ensure comfort and safety of the occupants while optimizing energy consumption. Malfunctions of electro-mechanical equipment or the associated control function result not only in incorrect operation, but also wastage of energy. Automated fault detection and diagnostics (AFDD) of processes like heating, ventilation, and air-conditioning (HVAC) is a challenging task due to the diversity of the applications and inter-dependencies between the equipment. Semantic description of the building and its equipment can help AFDD agents to better understand the system and continuously examine its operation. However, AFDD using only the structural description of the building topology and the contained equipment without relating it to the control functions requires manual verification of the root cause. In this work, we added a model of the control functionality to the semantic information of the structural and topological description and represented it using W3C Web of Things Thing Descriptions. Based on these descriptions, we have demonstrated in a case study of a building installation that fault detection rules which have access to the semantic description of underlying control functions can be formulated more precisely and thereby avoid false positives.

关键词： building automation fault detection semantic data

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The gaseous hydrocarbon fuel combustion process diagnostics using laser-spark emission spectrometry 3

The gaseous hydrocarbon fuel combustion process diagnostics ...

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3rd International Scientific conference on Applied Physics, Information Technologies and Engineering, APITECH-III 2021

作者： Vaganov, M.A. Kazakov, V.I. Saint Petersburg Russia

To solve the gaseous hydrocarbon fuel combustion process control and diagnostics problem, it is proposed to apply the laser-spark emission spectrometry methods. In propane-air mixture combustion, three modes are investigated: stoichiometric combustion, an enriched mixture, and a lean mixture. A laboratory stand has been developed to study combustion processes by laser-spark emission spectrometry. The plasma radiation spectral characteristics an experimental study results formed in a flame when exposed to laser radiation are presented. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Combustion

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diagnostics of solid-state microwave modules at the initial stage of technological tests 5

Diagnostics of solid-state microwave modules at the initial ...

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5th International Scientific conference on Information, control, and Communication Technologies, ICCT 2021

作者： Kiryanov, A.Yu. Joint Stock Company 'Scientific and Production Enterprise 'Pulsar' 27 Okruzhnoy proezd Moscow105187 Russia

process testing is an integral part of the production of solid-state microwave modules used in radar stations. At the final stage of production, long-term technological tests are carried out. However, at the initial stage of testing, it is possible to carry out diagnostics of solid-state microwave modules, which makes it possible to identify malfunctions leading to failures of solid-state microwave modules. © 2021 Institute of Physics Publishing. All rights reserved.

关键词： Microwaves

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Experience in exploitation and diagnostics of high voltage transformers fleet 21

Experience in exploitation and diagnostics of high voltage t...

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21st IEEE International conference on Environment and Electrical Engineering / 5th IEEE Industrial and Commercial Power Systems Europe (EEEIC/I and CPS Europe)

作者： Kunicki, Michal Opole Univ Technol Fac Elect Engn Automat Control & Informat Opole Poland

ISBN: (纸本)9781665436137

This paper presents a statistical analysis on the population of high voltage power transformers, with particular consideration of pre-failure diagnostics. The objective of this case study is to indicate which parameters are exceeded the most often, and how they correlate with the other indicators. Almost 300 units were analyzed. According to these units, complete typical exploitation measurements were carried out in compliance with exactly the same methodology and measurement rigors. Seven diagnostic parameters were considered regarding further analysis. As a result, complete fingerprint of the exemplary population in terms of selected diagnostic parameters is evaluated. Results may be potentially used for improvement of the maintenance process and personalization of diagnostic criterions regarding other transformer populations.

关键词： power transformer maintenance diagnostics measurements

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Thermal signature of LIPSS formation revealed by infrared diagnostics 12

Thermal signature of LIPSS formation revealed by infrared di...

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12th CIRP conference on Photonic Technologies, LANE 2022

作者： Martan, Jirí Beltrami, Carlos Hauschwitz, Petr Moskal, Denys Bicištová, Radka Honner, Milan Brodsky, Alexander Lang, Vladislav University of West Bohemia Univerzitni 8 Plzen30100 Czech Republic Hilase Centre Institute of Physics Academy of Sciences of the Czech Republic Za Radnici 828 Dolni Brezany25241 Czech Republic RandD Department Holo/Or Ltd Einstein 13b Ness Tziona7403617 Israel

Formation of Laser Induced Periodic Surface Structures (LIPSS) is a very interesting phenomenon. As the process is now moving towards the industry for the production of functional surfaces, a monitoring technique for online process control is needed. In the present work, the process was investigated for the first time using fast infrared radiometry. An advanced multi-beam laser system with 2601 beams using DOE and 200 W picosecond laser was used. Heat accumulation was measured during the 50 pulses of LIPSS fabrication on steel for fluences from 0.07 to 0.31 J/cm2 and frequency 50 kHz. Interestingly, on the cooling part of the curves, plateaus were observed after each laser pulse, for high pulse energies even double plateaus. The observed shapes of the signal evolution in time represent thermal signature of the LIPSS formation. The results are promising that process control will be feasible by monitoring heat accumulation or plateau length. © 2022 The Authors. Published by Elsevier B.V.

关键词： Temperature measurement

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Operational control, monitoring and diagnostics of the technical condition of steam turbine installations of thermal power plants 3

Operational control, monitoring and diagnostics of the techn...

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3rd International Youth conference on Radio Electronics, Electrical and Power Engineering, REEPE 2021

作者： Sultanov, M.M. Chubko, Yu. M. Blagochinov, A.V. Kuryanova, E.V. National Research University MPEI Department of Energy Volzhsky Russia

ISBN: (纸本)9781728183985

The article presents the results of the analysis of modern requirements of operational control, monitoring and approaches to the implementation of diagnostics of the technical condition of steam turbine installations of thermal power plants. The experience of implementing monitoring and diagnostics systems at domestic thermal power plants with steam turbines of various types, including automatic continuous monitoring systems, is presented. The advantages of diagnostic methods for detecting mechanical damage to power equipment at the early stages of their occurrence and development are shown. A mathematical model for assessing the technical condition based on the operational characteristics of steam turbines of thermal power plants has been developed. Revealed that methods for the continuous control of process parameters allow evaluating the performance of equipment on an actual technical condition and to increase operating efficiency of steam turbines. © 2021 IEEE.

关键词： Steam turbines

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Oil conditioning sensors for online heavy-duty engine health monitoring based on the control of a limited number of parameters

Oil conditioning sensors for online heavy-duty engine health...

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2022 International conference on Remote Sensing of the Earth: Geoinformatics, Cartography, Ecology, and Agriculture, RSE 2022

作者： Porokhnya, A.A. Yakimenko, I.Yu. North Caucasus Federal University 1 Pushkin str Stavropol355017 Russia

ISBN: (数字)9781510656482

ISBN: (纸本)9781510656475

The purpose of this article is to review new trends in monitoring the condition of engine oil on heavy-duty diesel engines. New solutions are being introduced into this industry with new advantages in the development of artificial intelligence, as well as machine learning and sensor technologies, which are applicable for data-based maintenance. They are called predictive maintenance. This paradigm replaces the old one. It changes the traditional routine preventive maintenance scheme and provides a deeper understanding of engine performance. Monitoring and checkout of the condition is necessary to maintain near real-time, because on-line control of equipment status can significantly reduce operating costs, by eliminating the need for equipment downtime for everyday diagnostics. The analysis based on oil samples is an effective tribotechnical systems approach for early diagnosis of failures, as it contains valuable information about the process of degradation of oil and the state of tribotechnical pairs. But there are some problems with this method. The first is the way of sampling. There are a lot of mistakes that can be made during the oil sampling process, and they can influence the results. Second is transportation to the place of analysis complicates the diagnostic process. That’s why we can’t say that this approach is an on-line method of diagnostic for the better prognosis of pending machinery failure needs to know a typical in time correlation between size and concentration of wear debris parts. But there is a note – a size of wear debris ranges in different work conditionals and depends on type of machine. For example, the size of wear debris during normal operation of a new engine ought to be at the range between 1 µm to 10 µm and at the constant correlation. If the conditions are abnormal the debris size will be between 20 µm and 100 µm. The size of wear debris parts and concentration of them will increase in time during the machine until it fails. The crit

关键词： Diagnosis

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Supervision System of the Fattening process of Cattle in Rotational Grazing using Fuzzy Classification 48

Supervision System of the Fattening Process of Cattle in Rot...

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48th Latin American Computer conference (CLEI)

作者： Benitez, Charles Garcia, Rodrigo Aguilar, Jose Jimenez, Marvin Robles, Horderlin Univ Los Andes Fac Engn Merida Venezuela Univ EAFIT GIDITIC Medellin Colombia Univ Sinu Fac Engn Medellin Colombia Univ Alcala Dept Automat Colombia Alcala De Henares Spain Univ Sinu Fac Engn Monteria Colombia

ISBN: (数字)9781665476713

ISBN: (纸本)9781665476713

Cattle breeding has been one of the most important industrial sectors in the world, since it is related to food security and the survival of the human race. Cattle diagnostics is a fundamental procedure for cattle breeders because it allows them to make strategic decisions, such as timely treatment in case of any abnormality (e.g., weight gain in herds, in their paddocks). This article aims to present a system to diagnose weight loss or gain in cattle under a rotational grazing scheme, considering the health status of the animal and the pasture. The diagnostic system is based on a fuzzy classifier that uses fuzzy logic to define the rules that characterize the diagnostic process, and fuzzy reasoning to determine the current situation given an input. In addition, the fuzzy classifier optimizes the rules using genetic algorithms, which modify the membership functions, providing a more accurate system for diagnosis. We tested our proposal with experimental cases, with promising results. The accuracy metrics have high values, indicating a low error rate in terms of false positives. In general, the values of the quality metrics are very good, with an accuracy close to 100% and an Area Under the Curve close to 1.

关键词： Diagnostic System Precision Livestock Farming Rotational Grazing Fuzzy Classifier Genetic Algorithms

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Intelligent Downhole Identification and control are Key to a Successful Water Conformance Strategy

Intelligent Downhole Identification and Control are Key to a...

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2023 Middle East Oil, Gas and Geosciences Show, MEOS 2023

作者： Omer, Mohammed Fragachan, Francisco E. Duarte, Miguel J. Alvarez, Alfredo A. Weatherford International United States

ISBN: (纸本)9781613999806

In many parts of the world, the water oil ratio (WOR) is approximately 9:1, resulting in large amounts of undesired fluids that require managing and processing, ultimately increasing cost. Water management strategies are applied to reservoirs to increase oil recovery and provide proper water conformance to minimize these impacts. The success rates of legacy water management strategies are approximately 40% of the causes for the low success rates involved in trying to control the water problem at later stages when treatment effectiveness is less effective and the diagnostics for the source of water production are more difficult. Early reservoir management strategies are needed to effectively reduce unwanted water production. In this paper, we discuss a unique 4-stage process starting with reservoir analysis. Water coning and channeling are characteristic signatures in log-to-log WOR vs. time plots (Chan. 1995). These plots are used to identify near-wellbore problems and provide guidance into potential reservoir-related water issues. If the water production is from a high permeability streak, water increases rapidly and follows a linear pattern in the WOR vs. time log-log plot. The slope severity is dependent upon the relative permeability profile, initial saturation conditions, reservoir fluid properties, and capillary pressure. In bottom water coning, the plot curve exhibits a slow WOR increase rate until reaching an asymptotic behavior versus time in a log-log plot. After assessing candidate wells for the identification of water production issue, a chemical-based treatment is executed to mitigate the problem, temporarily or permanently. This work showcases the results of zonal isolation, natural fracture sealing, and relative permeability modifications from wells in South America and Europe. The first candidate located in Colombia suddenly started to experience a high WOR, with the water cut increasing from 20 to 80%, in 45 days. A comprehensive study indicated tha

关键词： Reservoir management

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Diagnostic process efficiency analysis for block diagram of electric field parameters meter 12

Diagnostic process efficiency analysis for block diagram of ...

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12th IEEE International conference on Electronics and Information Technologies, ELIT 2021

作者： Shcherbyna, Olga Zaliskyi, Maksym Solomentsev, Oleksandr Kuzmenko, Nataliia Yanovsky, Felix Ostroumov, Ivan Averyanova, Yuliya Sushchenko, Olha Department of Electronics Robotics Monitoring and IoT Technologies National Aviation University Kyiv Ukraine Department of Telecommunication and Radioelectronic Systems National Aviation University Kyiv Ukraine Air Navigation Systems Department National Aviation University Kyiv Ukraine Aerospace Control Systems Department National Aviation University Kyiv Ukraine

ISBN: (纸本)9781665442961

The paper is devoted to the problem of determining the statistical characteristics of the efficiency indicator of the process of diagnosing the structural diagram of an electric field parameter meter with a ring antenna. Ring radiator and the signal processing unit diagram that separates the right and left-handed circular polarization field are constructed. Ensuring the effective use of radio monitoring antenna complexes for their intended purpose can be carried out in the operation systems. For this, the processes of maintenance, repair, diagnostics, measuring and other are implemented. The main in the diagnostic process is to determine the failed element of the system. In this case, certain time and material resources are spent. Therefore, the problem of determining statistical characteristics in the form of the probability density function of the diagnostics duration is considered in this paper. © 2021 IEEE.

关键词： Circular polarization

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