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Feature Recognition and Selection Method of the equipment State Based on Improved Mahalanobis-Taguchi System

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Journal of Shanghai Jiaotong university(Science) 2020年第2期25卷 214-222页

作者：王宁张卓 School of Automobile Chang'an UniversityXi'an 710064China School of Mechanical Engineering Northwestern Polytechnical UniversityXi'an 710072China

Mahalanobis-Taguchi system(MTS)is a kind of data mining and pattern recognition method which can identify the attribute characteristics of multidimensional data by constructing Mahalanobis distance(MD)measurement *** this paper,considering the influence of irregular distribution of the sample data and abnormal variation of the normal data on accuracy of MTS,a feature recognition and selection model of the equipment state based on the improved MTS is proposed,and two aspects of the model namely construction of the original Mahalanobis space(MS)and determination of the threshold are ***,the original training sample space is statistically controlled by the X-bar-S control chart,and extreme data of the single characteristic attribute is filtered to reduce the impact of extreme condition on the accuracy of the model,so as to construct a more robust ***,the box plot method is used to determine the threshold of the *** the stability of the model and the tolerance to the extreme condition are improved by leaving sufficient range of the variation for the extreme condition which is identified as in the normal ***,the improved model is compared with the traditional one based on the unimproved MTS by using the data from the *** result shows that compared with the traditional model,the accuracy and sensitivity of the improved model for state identification can be greatly enhanced.

关键词： Mahalanobis-Taguchi system(MTS) extreme condition X-bar-S control chart box plot method Mahalanobis space(MS) Mahalanobis distance(MD) threshold feature recognition equipment state

Condition-Based Maintenance Decision-Making for equipment

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Journal of Donghua University(English Edition) 2014年第6期31卷 805-808页

作者：黄建新边亚琴李树彬 Air Force Engineering University

At present, condition monitoring and fault diagnosis technology and their application in engineering have been widely studied. Relatively little attention has been paid to condition-based maintenance decision-making for equipment. In this paper,based on the decision-making policy in traditional condition-based maintenance,the connotation of condition-based maintenance for equipment was defined, and its characteristics were *** contents of condition-based maintenance for equipment were provided,which were divided into three stages. The influence factors in condition-based maintenance for equipment were analyzed. The key links of equipment maintenance contents and decision-making process were proposed. The condition-based maintenance decision-making policy presented in this paper can provide a practical reference for equipment maintenance.

关键词： condition-based maintenance decision-making equipment working contents

Remanufacturing strategy for chemical equipment

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Journal of Central South University 2005年第S2期14卷 142-144页

作者：张显程徐滨士王海斗姜祎吴毅雄巩建鸣涂善东 State Key Laboratory of Metal Matrix Composites Shanghai Jiaotong University Shanghai 200030 China National Key Laboratory for Remanufacturing Beijing 100072 China National Key Laboratory for Remanufacturing Beijing 100072 China State Key Laboratory of Metal Matrix Composites Shanghai Jiaotong University Shanghai 200030 China College of Mechanical Engineering Nanjing University of Technology Nanjing 210009 China

Failure, especially induced by cracks, usually occurred in the service process of chemical equipment, which could cause the medium leakage, fire hazard and explosion and induced the personnel casualty and economic losses. To assure the long-term and safety service, it is necessary to apply the remanufacturing technology on the chemical equipment containing cracks. The recent research advances on the remanufacturing, the failure modes and the life extension technology for chemical equipment were reviewed. The engineering strategy of the remanufacturing for the chemical equipment was proposed, which could provide a reasonable and reliable technical route for the remanufacturing operation of chemical equipment. In the strategy, the redesign was also been considered.

关键词： remanufacturing chemical equipment life extension

Research on Software Structure Analysis Technology and Reliability Evaluation Method of Warship equipment

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Journal of Donghua University(English Edition) 2018年第5期35卷 430-438页

作者：闫然韩新宇刘泊江唐龙利 China Shipbuilding Software Quality&Reliability Testing Center Beijing 100081China

In view of the current reliability evaluation requirements of warship equipment based on component, this paper comprehensively considered the characteristics of components,and the component identification method, structural decomposition method,component architecture modeling method were studied for warship equipment software. Based on the characteristics of warship equipment component, this paper proposed a formal modeling language based on Petri nets to realize the modeling of component software architecture and laid a foundation for the reliability evaluation method research of warship equipment component.

关键词： warship equipment component software software architecture component identification component modeling reliability evaluation

Random Vibration Analysis of the Electronic equipment Cabinet

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武汉理工大学学报 2006年第S2期28卷 709-713页

作者： LIU Yanping~1 LIU Dongqing~2 1.Key Laboratory of Condition Monitoring and Control for Power Plant equipment of Ministry of Education,North China Electric Power University,Beijing 102206 ,China 2.Beijing University of Science and Technology,Beijing 100083,China Key Laboratory of Condition Monitoring and Control for Power Plant equipment of Ministry of Education North China Electric Power UniversityBeijing 102206China Beijing University of Science and Technology Beijing 100083China

In order to understand the vibration characteristic of system structure of electronic equipment cabinet within the particular vibration frequency,the finite element analysis software-ANSYS is used to simulate the tests of random vibrations of the cabinet system and obtain the isopleths graph of deformation and stress of the *** can confirm maximum of deformation and stress of the cabinet and position *** more analysis of the frequency response curve,which can confirm harm- ful consequences random vibrations caused and weak link of the cabinet *** numerical simulation results are in good a- greement with the experimental *** shows that this research provides an efficient method for the anti-seismic design and the dynamic optimization design.

关键词： random vibrations test vibration characteristic numerical simulation finite element analysis electronic equipment cabinet ANSYS software

An in situ monitoring method for PECVD process equipment condition

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Plasma Science and Technology 2019年第6期21卷 15-22页

作者： G KANG S AN K KIM S HONG Department of Electronic Engineering Myongji University Yongin 17058 Republic of Korea

A key to successful consistent plasma processing is maintaining a consistent process chamber condition over a certain production *** alleviate the concern,in situ process monitoring sensors are employed to investigate the plasma chamber conditions of both the deposition step with direct plasma and the cleaning step with a remote plasma *** situ sensors are optical emission spectroscopy (OES),optical plasma monitoring sensors (OPMS),voltage current probes (Ⅵ-probes),and self-plasma OES (SP-OES).During the deposition,we perform the monitoring of a plasma condition associated with the applied RF power via OES,OPMS,and a Ⅵ-*** the chamber cleaning step using a remote plasma system does not allow plasma monitoring through the sidewall because the plasma is not formed in the process chamber,thus we employed SP-OES to monitor the by-product gas chemistry during the chamber cleaning process *** monitoring results with some useful applications,such as arc detection,part failure detection,and cleaning process chemistry analysis,are presented in this *** use of in situ sensors with proper combination can help to understand the plasma process better,to achieve more precise control of plasma processing.

关键词： in situ monitoring sensor advanced equipment control

Data Resource Management Platform of Paper-making Mill equipment Operation based on Hadoop

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International Journal of Plant Engineering and Management 2019年第1期24卷 44-51页

作者： PANG Qian YU Zhongqing WANG Haiya Qingdao University

Aiming at the ″Made in China 2025″ strategy proposed by the state and combining with the popular the Internet, Internet of things, big data, machine learning and other technologies, Hadoop-based open source framework is adopted to realize the equipment data resource management platform of paper-making mill equipment. In this paper, the main function module of the platform is introduced, and some of operational effect map from the C paper-making mill are shown, and the key technologies in the platform construction is studied. It proposal to combine the internet, the internet of things, big data and machine learning to improve the informatization of the paper-making mill equipment, and ensure production safety, optimize technological process, improve product competitiveness, and also provide the theoretical guidance and practical basis for constructing the similar projects.

关键词： paper-making mill equipment hadoop big data internet of things

Proposing a“lean and green”framework for equipment cost analysis in construction

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Frontiers of Engineering Management 2019年第3期6卷 384-394页

作者： Ming LU Nicolas DIAZ Monjurul HASAN Department of Civil and Environmental Engineering University of AlbertaEdmontonAlberta T6G 1H9Canada

One limitation of previous productivity-driven research on equipment selection and operation simulation lies in the fact that the green aspects of construction activities have been largely neglected in analysis of costefficiency of construction *** the other hand,studies attempting to measure greenhouse gas emission due to construction activities have yet to develop a methodology that correlates their findings and implications with construction *** order to address the immediate need for improving the sustainability performance of construction projects,it is imperative for the construction industry to evaluate greenhouse gas emission as a cost factor in construction planning,equipment selection,and cost *** this context,this paper formalizes an integrative framework for equipment cost analysis based on the concepts of lean construction and green construction,aimed to guide the selection of appropriate construction equipment considering exhaust emission and productivity performance at the same *** framework is elaborated in earthwork construction in order to evaluate the impact of greenhouse gas emission in estimating equipment hourly rates and assessing greenness and sustainability for alternative equipment options.

关键词： green construction lean construction equipment simulation earthwork construction sustainability productivity

The Development of a Knowledgeable Monitoring System for Weapon equipment

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International Journal of Plant Engineering and Management 1998年第1期3卷 18-23页

作者： Yan Shenggang, Yang Daoqing, Zhao SongzhengNorthwestern Polytechnical UniversityXi’an, 710072, Shaanxi, P.R.China

In order to make the combat effectiveness of weapon yield well, it is necessary to maintain and monitor the weapons. Based on the requirement of weapon equipment, an integrated maintaining system is developed, which can be used to carry out the maintenance by using electricity periodically and function detection at module level. So, the breakdown rate of product component is deceased a lot, product reliability is improved, and the life cycle is prolonged. Thus, combat effectiveness of weapon equipment is improved. 

关键词： equipment weapon weapon equipment maintenance and detection power