Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing)最新文献_第5页

Evaluating nominal parameters in fault diagnosis 故障诊断中标称参数的评定

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI: 10.1109/PHM.2012.6228840

E. W. M. Ma, T. Chow, M. Pecht

引用次数: 0

The testability modeling and model conversion technology based on multi-signal flow graph 基于多信号流图的可测试性建模与模型转换技术

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI: 10.1109/PHM.2012.6228919

Dandan Liu, Zhaoyang Zeng, Cuihong Huang, Fan Li

{"title":"The testability modeling and model conversion technology based on multi-signal flow graph","authors":"Dandan Liu, Zhaoyang Zeng, Cuihong Huang, Fan Li","doi":"10.1109/PHM.2012.6228919","DOIUrl":"https://doi.org/10.1109/PHM.2012.6228919","url":null,"abstract":"Along with the increase of the level of complexity, integration and intelligence of system, prognostics and health management technology (PHM) has gotten more and more attention and application. The technology has become the key technology of increasing the reliability, testability, maintainability, supportability and safety of complex system. Doubtless the higher requirements are put forward to the testability technology. The testability modeling and model conversion technology are more and more emphasized by the product designer with widespread application for design for testability. In this paper, the testability modeling and model conversion technology based on the multi-signal flow graph are introduced. After describing the basic principle of testability model, the paper discussed the method of testability modeling and analysis and the method of model conversion. Finally, by using a PDU controller of momentum drive equipment of some airplane, it is validated that the methods are valid. At the same time, results show that the methods are feasible and effective in the design for PHM of modernized equipment.","PeriodicalId":444815,"journal":{"name":"Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124523964","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 9

Research on reliability estimation for mechanical manufacturing process based on Weibull analysis technology 基于威布尔分析技术的机械制造过程可靠性评估研究

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI: 10.1109/PHM.2012.6228855

Jinghuan Ma, Yihai He, Chunhui Wu

{"title":"Research on reliability estimation for mechanical manufacturing process based on Weibull analysis technology","authors":"Jinghuan Ma, Yihai He, Chunhui Wu","doi":"10.1109/PHM.2012.6228855","DOIUrl":"https://doi.org/10.1109/PHM.2012.6228855","url":null,"abstract":"Currently, the theory of reliability is mainly focused on product design, on the other hand, we do not have a good knowledge of reliability assurance in manufacturing process. Meanwhile, lots of engineering cases show that the reliability of products falls rapidly when it comes to the phase of batch production, revealing the weakness of our research of manufacturing reliability. Nowadays, the major problem faced by the industry is that how we can assess the product reliability in the manufacturing process as well as identify the manufacturing bottle neck which should be focused attentively by the reliability engineer in manufacturing process. To resolve the problem, a reliability assessment method of manufacturing process by using the Weibull analysis technology is presented in the paper. In this model, the reliability of manufacturing process is calculated by analyzing the manufacturing system failures firstly, and then the correlation model of reliability of manufacturing process and the qualified rate of produced product is established. According to the correlation model, we propose a reliability estimation method based on Weibull analysis technology. And the map estimation and chi-square goodness of fit tests are performed on simulated data to compare the fit of the model. Lastly, the method is validated by an example of a mechanical product manufacturing process, the result shown that the assessment method can be a useful tool in the assurance of reliability of the manufacturing process.","PeriodicalId":444815,"journal":{"name":"Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125064186","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

A timeliness-based optimal inspection interval associated with the delay time model 基于时效性的最优检测间隔关联延迟时间模型

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI: 10.1109/PHM.2012.6228965

R. Jiang

引用次数: 4

The intelligent BIT design of aviation integrated computer system based on improved BP neural network 基于改进BP神经网络的航空综合计算机系统智能BIT设计

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI: 10.1109/PHM.2012.6228883

Long Shi, Wenkui Hou, Junyou Shi, Hongmei Liu

引用次数: 1

An inspection and replacement model based on a three-stage failure process 基于三阶段故障过程的检测和更换模型

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI: 10.1109/PHM.2012.6228928

Fei Zhao, R. Peng, Wenbin Wang

引用次数: 9

Application of the acoustic emission (AE) method to bridge testing and diagnostics comparison of procedures 应用声发射(AE)法对桥梁进行检测和诊断程序的比较

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI: 10.1109/PHM.2012.6228807

Goszczynska Barbara, S. Grzegorz, Trampczynski Wieslaw, Krampikowska Aleksandra

{"title":"Application of the acoustic emission (AE) method to bridge testing and diagnostics comparison of procedures","authors":"Goszczynska Barbara, S. Grzegorz, Trampczynski Wieslaw, Krampikowska Aleksandra","doi":"10.1109/PHM.2012.6228807","DOIUrl":"https://doi.org/10.1109/PHM.2012.6228807","url":null,"abstract":"On the basis of experimental results, the paper presents and analyses three procedures using acoustic emission in non-destructive tests of reinforced concrete elements and structures. Two of those procedures, namely one published by The Ferguson Structural Engineering Laboratory - The University of Texas at Austin and the other covered by the Japanese standard JCMS-III B5706, describe measurements with the AE method taken on prestressed or reinforced concrete beams. In both cases the same AE signal sources are analysed: crack initiation, crack formation and propagation, crack closure (friction at the concrete-concrete interface), friction at the reinforcement-concrete interface, reinforcement yield and fracture. The procedures were developed on the basis of the analysis of destructive processes in reinforced concrete elements (beams) subjected to loading under laboratory conditions. The procedures are based on AE signal measurements when loading is performed in accordance with a strictly defined scheme. As regards bridges, especially those in service, it is almost impossible to obtain accurate loading values, so it is extremely difficult to achieve real results, which arises from the conditions of taking in-situ measurements. The results of laboratory tests also show substantial discrepancies in the evaluation of elements when both procedures are applied. The third, termed the IADP procedure, provides a diagnostic method for pre-stressed structures that remain in service. The procedure is based on the identification and location of destructive processes with AE testing. The method is applicable to all pre-stressed elements independent of their structure. It accounts for the interaction of different elements and damages, and also for ambient conditions (load, humidity, temperature, etc.). The usability of the procedure is confirmed by the results of both laboratory tests and those performed on real structures.","PeriodicalId":444815,"journal":{"name":"Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing)","volume":"503 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122206060","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 7

Research on compiling fatigue load spectrum of individual aircraft and analysis of fatigue life based on flight data 基于飞行数据的单架飞机疲劳载荷谱编制及疲劳寿命分析研究

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI: 10.1109/PHM.2012.6228937

Yan Li, Zhao-yi Wang, Yueliang Chen, Yong Zhang, WengSheng Sun

{"title":"Research on compiling fatigue load spectrum of individual aircraft and analysis of fatigue life based on flight data","authors":"Yan Li, Zhao-yi Wang, Yueliang Chen, Yong Zhang, WengSheng Sun","doi":"10.1109/PHM.2012.6228937","DOIUrl":"https://doi.org/10.1109/PHM.2012.6228937","url":null,"abstract":"Compiling fatigue load spectrum is the precondition and basement of fatigue life prediction, simulation experiments and fatigue strength analysis of aircraft. The method of air fleet life is used on management of homotype aircraft life for a long term, that is the process of achievement on safe life index by fatigue experiment of aircraft overall dimension on condition of standard fatigue load spectrum. However, individual aircraft life monitoring could represent difference on flight environment and pilot manipulation of each aircraft by real load course of aircraf, which differs from the previous method. And this could lay a foundation on having the damage informations in hand during the service life of individual aircraft timely. Furthermore, flight data system of aircraft equipment, which offer the abundant data on compiling individual fatigue load spectrum. Based on the parameters of overload on center of gravity etc., this paper firstly adopted the method of rain-flow count to register the amplitude and mean of overload data on each cycle by preprocessing of flight data. Thus the overload spectrum was compiled by the means of fluctuations in center. And the fatigue life of the critical part in an aircraft was computed using the local stress-strain techinique considering material memorial characteristics under the fatigue load spectrum based on flight data. Contrasting with experiment outcomes, the calculation results indicated the probability of aircraft life-saving, which was also the groundwork to service-life monitoring of this type aircraft.","PeriodicalId":444815,"journal":{"name":"Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing)","volume":"43 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131014411","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 5

Unsupervised clustering for fault diagnosis 无监督聚类故障诊断

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI: 10.1109/PHM.2012.6228844

P. Baraldi, F. D. Di Maio, E. Zio

引用次数: 11

Research on equipment health assessment based on grey system theory 基于灰色系统理论的设备健康评估研究

Proceedings of the IEEE 2012 Prognostics and System Health Management Conference (PHM-2012 Beijing) Pub Date : 2012-05-23 DOI: 10.1109/PHM.2012.6228821

Tongna Mu, Hongmin Yu, Xue-yan Zhang

引用次数: 0