2017 Prognostics and System Health Management Conference (PHM-Harbin)最新文献_第10页

Analysis of time domain reflectometry for crack intermittency detection in circuit board 电路板裂纹间歇性检测的时域反射分析

2017 Prognostics and System Health Management Conference (PHM-Harbin) Pub Date : 2017-07-01 DOI: 10.1109/PHM.2017.8079172

Li Huakang, Lv Kehong, J. Qiu, Guanjun Liu

{"title":"Analysis of time domain reflectometry for crack intermittency detection in circuit board","authors":"Li Huakang, Lv Kehong, J. Qiu, Guanjun Liu","doi":"10.1109/PHM.2017.8079172","DOIUrl":"https://doi.org/10.1109/PHM.2017.8079172","url":null,"abstract":"For the crack intermittency detection in circuit board, a detection method based on time domain reflectometry is proposed. And a time domain signal feature is extracted, the time domain signal feature is highly sensitive to the defect. Firstly, in order to analyze the change trend of time domain signal under intermittent disconnection. The influence of conductor crack on the physical parameters is analyzed. The physical parameters include AC/DC resistance, inductance and capacitance. And then the principle of signal reflection is described. The ringing phenomenon that caused by signal reflection is used for crack intermittency detection. Therefore the maximum, minimum and peak-peak values of time domain signal are used to detect intermittent disconnection. At last solder joint equivalent circuit is used to verify the effectiveness of the method. When the intermittent disconnection happened in circuit board, the time domain reflection phenomenon is observed clearly. The maximum, minimum and the peak-peak values of output voltage signal are changed greatly, simulation result shows that the high frequency signal is sensitive to intermittent disconnection, and the proposed method is effective.","PeriodicalId":281875,"journal":{"name":"2017 Prognostics and System Health Management Conference (PHM-Harbin)","volume":"2015 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114685287","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: 1

IT-QEAS: An improved trilateration localization method through quality evaluation and adaptvie optimization selection strategy IT-QEAS:基于质量评价和自适应优化选择策略的改进三边定位方法

2017 Prognostics and System Health Management Conference (PHM-Harbin) Pub Date : 2017-07-01 DOI: 10.1109/PHM.2017.8079156

Yan Xiaozhen, Luo Qinghua, Wang Yao, Songjia, Shen hao, Zhang Hui, Zhou Pengtai, Wang Chenxu, Han Zhihao

{"title":"IT-QEAS: An improved trilateration localization method through quality evaluation and adaptvie optimization selection strategy","authors":"Yan Xiaozhen, Luo Qinghua, Wang Yao, Songjia, Shen hao, Zhang Hui, Zhou Pengtai, Wang Chenxu, Han Zhihao","doi":"10.1109/PHM.2017.8079156","DOIUrl":"https://doi.org/10.1109/PHM.2017.8079156","url":null,"abstract":"Wireless localization can provide position information for limitary, aerospace, emergency scheduling, rescue and relief work, fault diagnosis and many other related location-based services system in various application fields. Location information always supports critical decision-making of these application systems. So the localization accuracy is of great importance. As availability, low computation complexity, and low cost, trilateration localization method is applied in various systems. However, as there are numerous negative factors like non-line-of-sight measurement, complex multipath fading, which leads to high level localization error. To improve localization accuracy, an improved trilateration localization method is proposed, which is called improved trilateration localization method with distance estimation quality evaluation and anchor node adaptive selection (IT-QEAS). In this method, the qualities of distances estimation between unknown node and anchor nodes are evaluated, and the anchor nodes with higher quality distance estimation are selected adaptively to form trilateration localization equations, and finally, location result with high accuracy could be gained. The experimental result with actual localization data is shown that the proposed method can get higher localization accuracy with low computation complexity.","PeriodicalId":281875,"journal":{"name":"2017 Prognostics and System Health Management Conference (PHM-Harbin)","volume":"106 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114898348","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: 3

Method of assessing the multi-state of a rolling bearing based on CFOA-HSVM two measures combination 基于CFOA-HSVM两度量组合的滚动轴承多状态评估方法

2017 Prognostics and System Health Management Conference (PHM-Harbin) Pub Date : 2017-07-01 DOI: 10.1109/PHM.2017.8079180

Shouqiang Kang, Lili Cui, Yujing Wang, Fulin Li, V. I. Mikulovich

{"title":"Method of assessing the multi-state of a rolling bearing based on CFOA-HSVM two measures combination","authors":"Shouqiang Kang, Lili Cui, Yujing Wang, Fulin Li, V. I. Mikulovich","doi":"10.1109/PHM.2017.8079180","DOIUrl":"https://doi.org/10.1109/PHM.2017.8079180","url":null,"abstract":"To assess the multi-state of a rolling bearing more effectively and simultaneously, a unified assessment method is proposed based on chaos fruit fly optimization algorithm hyper-sphere support vector machine (CFOA-HSVM) two measures combination. Aiming to the blindness of parameters selection for HSVM, multiple parameters of HSVM can be searched the optimal values using chaos theory combined with fruit fly optimization algorithm (CFOA), and HSVM model based on CFOA can be constructed. On above basis, the minimum of difference coefficient, that is generalized minimum distance, can be extracted and regarded as geometric assessment distance measure that is sensitive to absolute value. Meanwhile, angle cosine distance is introduced to calculate angle cosine distance between classification state and normal state, and is regarded as assessment distance measure which is sensitive to the direction. Then the assessment measure of generalized minimum distance is compensated and the unified assessment index of multi-state of the rolling bearing is constructed based on two measures combination, further the assessment model can be constructed and the assessment curve can be obtained. Experiments show that the proposed method can assess the different fault location and different failure degree of the rolling bearing more effectively and simultaneously.","PeriodicalId":281875,"journal":{"name":"2017 Prognostics and System Health Management Conference (PHM-Harbin)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124049404","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: 3

Study on prediction method of fault channel numbers in radar antenna array 雷达天线阵故障信道数预测方法研究

2017 Prognostics and System Health Management Conference (PHM-Harbin) Pub Date : 2017-07-01 DOI: 10.1109/PHM.2017.8079205

Xiaodong Hou, Jiangping Yang, Yu Zhang, Zengjun Bi

引用次数: 0

OBDD method for compilation based diagnosis of satellite 基于编译的卫星诊断OBDD方法

2017 Prognostics and System Health Management Conference (PHM-Harbin) Pub Date : 2017-07-01 DOI: 10.1109/PHM.2017.8079228

Bo Pang, Zhigang Huang, Wenfeng Zhang, Wenjuan Li

引用次数: 0

Electromagnetic coil equivalent circuit model sensitivity analysis for impedance-based insulation health monitoring 基于阻抗的电磁线圈等效电路模型灵敏度分析

2017 Prognostics and System Health Management Conference (PHM-Harbin) Pub Date : 2017-07-01 DOI: 10.1109/PHM.2017.8079188

N. J. Jameson, M. Azarian, M. Pecht, Kai Wang, Xu Aidong

{"title":"Electromagnetic coil equivalent circuit model sensitivity analysis for impedance-based insulation health monitoring","authors":"N. J. Jameson, M. Azarian, M. Pecht, Kai Wang, Xu Aidong","doi":"10.1109/PHM.2017.8079188","DOIUrl":"https://doi.org/10.1109/PHM.2017.8079188","url":null,"abstract":"Insulation failure is a significant driver of failures in electromagnetic coils, which are used, for example, in motor and solenoid applications. A promising method of assessing the health of insulation in electromagnetic coils is the use of broadband terminal impedance measurements. Previous research has focused on the resonant frequency of the coil impedance response as a feature to reflect insulation health. This paper performs a sensitivity analysis of an equivalent circuit model for the electromagnetic coil in order to survey the frequency spectrum for frequencies that can be applied in insulation health monitoring. The results show that while resonant frequency is sensitive to changes in the insulation, there are frequencies around the resonant frequency that are many times more sensitive to these changes, and hence should be preferred for insulation health monitoring purposes. With this knowledge, health monitoring system designers can understand where in the frequency spectrum insulation health data can best be located, allowing for an effective health monitoring system design.","PeriodicalId":281875,"journal":{"name":"2017 Prognostics and System Health Management Conference (PHM-Harbin)","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125008632","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: 1

Product failure modeling method based on Altarica language 基于Altarica语言的产品失效建模方法

2017 Prognostics and System Health Management Conference (PHM-Harbin) Pub Date : 2017-07-01 DOI: 10.1109/PHM.2017.8079269

Gao Long, Ao Liang

引用次数: 3

The temperature fluctuation modeling and compensation for the degradation data of super-luminescent diode 超发光二极管退化数据的温度波动建模与补偿

2017 Prognostics and System Health Management Conference (PHM-Harbin) Pub Date : 2017-07-01 DOI: 10.1109/PHM.2017.8079286

Fuqiang Sun, Ning Wang, Xiaoyang Li, T. Jiang

引用次数: 0

Prognostics of rolling element bearings with the combination of paris law and reliability method 结合巴黎定律和可靠性法的滚动轴承预测

2017 Prognostics and System Health Management Conference (PHM-Harbin) Pub Date : 2017-07-01 DOI: 10.1109/PHM.2017.8079187

M. Behzad, Hesam Addin Arghan, A. Bastami, M. Zuo

引用次数: 10

Research on screening method of performance index of PHM system for armored vehicles 装甲车辆PHM系统性能指标筛选方法研究

2017 Prognostics and System Health Management Conference (PHM-Harbin) Pub Date : 2017-07-01 DOI: 10.1109/PHM.2017.8079292

Meijie Zhai, Hua Cong, Fuzhou Feng, Shoujun Wu

引用次数: 3