2016 Prognostics and System Health Management Conference (PHM-Chengdu)最新文献_第8页

PHM applications in medicine and medical implantable device PHM在医学和医疗植入装置中的应用

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819755

S. Kirillov, A. Kirillov, Vitalii Iakimkin, A. Khodos, Yuri Kaganovich, M. Pecht

{"title":"PHM applications in medicine and medical implantable device","authors":"S. Kirillov, A. Kirillov, Vitalii Iakimkin, A. Khodos, Yuri Kaganovich, M. Pecht","doi":"10.1109/PHM.2016.7819755","DOIUrl":"https://doi.org/10.1109/PHM.2016.7819755","url":null,"abstract":"The paper describes the adaptation of PHM models, methods and algorithms to solve prognosis problems for biomechanical systems, in particular, prognosis of Heart Failure, problems of antiarrhythmic electrical therapy optimization of CRT devices (cardiac resynchronization therapy devices). As the basis for making prognosis in biomechanical systems and biomechanical systems with implantable electronics are the multiscale physical models of heart failure and biophysics of membranes of cardiomyocytes. At the macroscopic level, the mathematical model of ECG analyzing, allowing to determine the evolution equations of predictors of heart failure is developed. Computing algorithms of RUL analog as the time parameter, expressed by the number of cardiac cycles required to achieve predicted values of predictors or heart failure boundaries, are defined and constructed. The paper also gives a rigorous justification of the thesis about the effectiveness of PHM methods in problems of prognosis of atrial fibrillations, ventricular arrhythmia, and prognosis of sudden heart death. The results of using the prognostic methods and estimations of time to reach the borders of heart failure are demonstrated using the modified portable PHM ECG recorder in 12 leads. Modified recorder contains built-recognizing automata, supported and retrains on a remote computing PHM cluster. The basic principles of interaction between remote computing a cluster with recognizing automata of ECG recorder are described. At the same time recognizing automata manage computational cores of remote cluster, in its turn the computing cores and logic modules of the cluster are determined automatic operation and the duration of the ECG recording. Thus, the task of optimizing the duration of monitoring is solved. Also, the results of clinical trials of methods and prognosis algorithms are demonstrated.","PeriodicalId":202597,"journal":{"name":"2016 Prognostics and System Health Management Conference (PHM-Chengdu)","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128479003","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

A fault diagnosis approach for airborne fuel pump based on EMD and probabilistic neural networks 基于EMD和概率神经网络的机载燃油泵故障诊断方法

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819831

Xiaoxuan Jiao, Bo Jing, Yifeng Huang, Wei Liang, Guangyue Xu

{"title":"A fault diagnosis approach for airborne fuel pump based on EMD and probabilistic neural networks","authors":"Xiaoxuan Jiao, Bo Jing, Yifeng Huang, Wei Liang, Guangyue Xu","doi":"10.1109/PHM.2016.7819831","DOIUrl":"https://doi.org/10.1109/PHM.2016.7819831","url":null,"abstract":"Airborne fuel pump is an important part of aircraft fuel system, for the lack of fault samples, low diagnostic efficiency and high maintenance cost, in order to achieve more accurate and reliable fault diagnosis of airborne fuel pump, an experimental platform of fuel transfusion system is developed and a fault diagnosis method based on empirical mode decomposition (EMD) and probabilistic neural networks (PNN) is proposed. Firstly, the vibration signals and pressure signals of normal state and six types of representative fuel pump faults are collected on the experimental platform. Then the EMD method is applied to decompose the original vibration signals into a finite Intrinsic Mode Functions (IMFs) and a residual. Secondly, the energy of first four IMFs is extracted as a vibration signals failure feature, combined with the mean outlet pressure to structure the fault feature vector and then divided into training samples and testing samples. Training samples are used to train the PNN fault diagnosis model and testing samples are used to verify the model. Experimental results show that compared with SVM and GA-BP, the PNN fault diagnosis model has fast convergence, high efficiency and a higher performance and recognition for the typical faults of airborne fuel pump.","PeriodicalId":202597,"journal":{"name":"2016 Prognostics and System Health Management Conference (PHM-Chengdu)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116655718","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 method for inhibition of product reliability degradation based on manufacturing process quality variation control 基于制造过程质量变化控制的产品可靠性退化抑制方法

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819798

Jin-yong Yao, Hao Wu, Yun Zhou

引用次数: 1

The influence of locomotive primary longitudinal damping on wheel tread damage 机车一次纵向阻尼对车轮踏面损伤的影响

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819950

Chen Wang, S. Luo, Weihua Ma, Wengwu Fang

引用次数: 0

Effects of different vibration directions on the damage mechanism of BGA under vibration loading coupled with cyclic thermal 振动载荷与循环热耦合作用下不同振动方向对BGA损伤机理的影响

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819859

Zengjin Sheng, Bo Jing, Wei Tang, Jiaxing Hu, Jiayan Dong

{"title":"Effects of different vibration directions on the damage mechanism of BGA under vibration loading coupled with cyclic thermal","authors":"Zengjin Sheng, Bo Jing, Wei Tang, Jiaxing Hu, Jiayan Dong","doi":"10.1109/PHM.2016.7819859","DOIUrl":"https://doi.org/10.1109/PHM.2016.7819859","url":null,"abstract":"In this paper, the effects of different vibration directions on the damage mechanism of BGA are analyzed under vibration loading coupled with cyclic thermal. The PCB board is designed to install the BGA chip and the specific fixture is designed to fix the test piece of PCB board on the temperature-vibration test chamber. Thus the BGA joins can be tested under vibration of directions of 0 degrees, 30 degrees, 45 degrees, and 90 degrees, coupled with cyclic thermal. Results indicate that different vibration directions greatly affect the damage mechanism of BGA joint, rate of strain accumulation are about 0.1με/min in direction of 45°, 0.05με/min in direction of 90°,0.14με/min in direction of 30°, and 0.16με/min in direction of 0°, which show that the strain accumulation near solder joints under horizontal vibration rises fastest, and the strain accumulation near solder joints under vertical vibration rises slowest. Besides, fluctuation amplitudes of strains near solder joints are different, fluctuation amplitudes of strains under horizontal vibration is largest, and fluctuation amplitudes of strains under vibration of 30° is smallest.","PeriodicalId":202597,"journal":{"name":"2016 Prognostics and System Health Management Conference (PHM-Chengdu)","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125344221","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: 4

Using empirical mode decomposition scheme for helicopter main gearbox bearing defect identification 基于经验模态分解的直升机主齿轮箱轴承缺陷识别方法

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819829

F. Duan, Michael Corsar, D. Mba

{"title":"Using empirical mode decomposition scheme for helicopter main gearbox bearing defect identification","authors":"F. Duan, Michael Corsar, D. Mba","doi":"10.1109/PHM.2016.7819829","DOIUrl":"https://doi.org/10.1109/PHM.2016.7819829","url":null,"abstract":"Vibration sensors for helicopter health and condition monitoring have been widely employed to ensure the safe operation. Through the years, vibration sensors are now commonly placed on helicopters and have claimed a number of successes in preventing accidents. However, vibration based bearing defect identification remains a challenge since bearing defects signatures are usually contaminated by background noise resulting from variable transmission paths from the bearing to the receiving externally mounted vibration sensors. In this paper, the empirical mode decomposition (EMD) scheme was utilized to analyze vibration signal captured from a CS29 Category ‘A’ helicopter main gearbox, where bearing faults were seeded on one of the planetary gears bearing of the second epicyclic stage. The EMD scheme decomposed vibration signal into a number of intrinsic mode functions (IMFs) for subsequent envelope analysis. The selection of appropriate IMFs to characterize bearing fault signatures was discussed. The analysis result showed that the bearing fault signatures were successfully characterized and revealed the efficacy of the EMD scheme.","PeriodicalId":202597,"journal":{"name":"2016 Prognostics and System Health Management Conference (PHM-Chengdu)","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127127259","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

The diagnosis of Aero-engine's state based on rough set and improved BP neural network 基于粗糙集和改进BP神经网络的航空发动机状态诊断

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819835

Zhijun Xu, Yanguang Hu, Xiangkun Liu

{"title":"The diagnosis of Aero-engine's state based on rough set and improved BP neural network","authors":"Zhijun Xu, Yanguang Hu, Xiangkun Liu","doi":"10.1109/PHM.2016.7819835","DOIUrl":"https://doi.org/10.1109/PHM.2016.7819835","url":null,"abstract":"Operating parameters and life parameters are the factors that determine the state of the engine. However, the operating parameters and life parameters also include many factors, such as cycle life damage rate, speed life damage rate, low and high pressure rotor rate and so on. Based on these factors, the evaluation and diagnosis system of aero-engine is built. Due to many factors that need to be considered, the training time of failure diagnosis based on traditional neural network is long. After taking account of these reasons, this paper is based on the rough set theory and a kind of improved BP neural network to realize the diagnosis more rapidly and accurately. According to a variety of performance indices, the key parameters are extracted as evaluating indicators. And then, this paper uses the rough set theory based on genetic algorithm to reduce these factors. In the condition of keeping the ability of classification, a kind of improved BP neural network is used to train the simplified parameters. Subsequently, we input the sample data into the neural network. By comparing with the final output, we can know whether the simplified evaluation indicators are feasible. The testing results show this paper offers a feasible way to solve comprehensive estimation of aero-engine performance. And this method shortens the training time, improves the accuracy of diagnosis, and provides the reference for the maintenance of the engine.","PeriodicalId":202597,"journal":{"name":"2016 Prognostics and System Health Management Conference (PHM-Chengdu)","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121893336","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: 2

Generalized confidence intervals for process capability indices of log-normal distribution in the one-way random model 单向随机模型中对数正态分布过程能力指标的广义置信区间

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819855

Chen Yao, Yang Jun

引用次数: 1

Equivalent optimum design for accelerated life test scheme based on D-efficiency 基于d -效率的加速寿命试验方案等效优化设计

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819928

W. Sun, Yunxia Chen

{"title":"Equivalent optimum design for accelerated life test scheme based on D-efficiency","authors":"W. Sun, Yunxia Chen","doi":"10.1109/PHM.2016.7819928","DOIUrl":"https://doi.org/10.1109/PHM.2016.7819928","url":null,"abstract":"Equivalent optimum design is a new method of designing an optimum accelerated life test scheme. Traditional method is to establish a statistical model based on the corresponding life distribution and acceleration model under the premise of determining the test stress loading mode. The premise of predetermined stress loading mode results in a locally optimal solution, rather than achieving the global optimal requirement of minimizing the test time or cost during the period of actual experimental implementation. The existing equivalent experimental design has already compensated for the above constraints roughly, which provides an equivalent conversion approach between different accelerated life test plans. Thus, an equivalent design scheme can be obtained on the baseline of existing optimal constant stress accelerated life test. However, the current equivalent criterion is a little bit too harsh that is to request the equation of two plans' corresponding quintile life asymptotic variance under normal stress level or fisher matrix determinant. It is difficult to obtain the satisfied solutions. In this paper, a new equivalent optimization method is proposed based on a new equivalent criterion called D-efficiency. With this method, equivalent design scheme can be realized by utilizing the ratio of fisher information matrix determinant to measure the equivalent degree. In this work, it assumes the fisher matrix determinant of optimal constant-stress accelerated life test is the baseline to determine the objective of an optimal model. The constraints can be built with several parameters of the original constant stress test plan. Finally, an example of the equivalent design was provided, which we changed the stress loading mode from constant-stress to step-stress. Different equivalent plans has been presented by changing the stress loading modes to reduce the test time or lower the cost of test under condition of the same accuracy of life prediction.","PeriodicalId":202597,"journal":{"name":"2016 Prognostics and System Health Management Conference (PHM-Chengdu)","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122171097","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

Research on determination method of equipment PHM system application scope 设备PHM系统应用范围的确定方法研究

2016 Prognostics and System Health Management Conference (PHM-Chengdu) Pub Date : 2016-10-01 DOI: 10.1109/PHM.2016.7819790

Shoujun Wu, Fuzhou Feng, Meijie Zhai, Qingjun Meng

引用次数: 1