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2022 Global Reliability and Prognostics and Health Management (PHM-Yantai)最新文献

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Experimental Study on Rubbing Failure of Tilting Pad Bearing in Heavy Duty Gas Turbine 重型燃气轮机倾斜垫轴承摩擦失效试验研究
Pub Date : 2022-10-13 DOI: 10.1109/PHM-Yantai55411.2022.9941760
Yongzhi Feng, Yushu Chen, Ning Yu, Fangang Meng, Qian Jia, Xiaoyang Yuan
Aiming at the rubbing fault of tilting pad sliding bearing of heavy gas turbine, acoustic emission sensor, eddy current sensor and acceleration sensor are used as measuring means to observe the rubbing phenomenon between tilting pad and journal. The rubbing test is carried out on the gas turbine molded rotor-tilting pad bearing test bench. In the test, the failure phenomenon of tilting pad bearing segment instability is simulated. In the test, the segment will periodically rub against the journal, and the swing frequency of the failed segment is about 0.5 times of the rotation frequency of the journal. The test results show that the rubbing frequency of the faulty segment and journal is also about 0.5 times of the rotating frequency, and the rubbing position is at the edge of segment. According to the intensity of acoustic emission signals at different measuring points, the position of the fault segment can be judged.
针对重型燃气轮机倾垫滑动轴承的摩擦故障,采用声发射传感器、涡流传感器和加速度传感器作为测量手段,观察倾垫与轴颈之间的摩擦现象。在燃气轮机模压转子倾垫轴承试验台上进行了摩擦试验。在试验中,模拟了可倾垫轴承段失稳的破坏现象。在试验中,管片会周期性地与轴颈摩擦,失效管片的摆动频率约为轴颈旋转频率的0.5倍。试验结果表明,故障管片与轴颈的摩擦频率也约为旋转频率的0.5倍,且摩擦位置位于管片边缘。根据不同测点的声发射信号强度,可以判断断层段的位置。
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引用次数: 0
Automatic Detection System of Substation Relay Protection Device Based on Failure Density Function 基于故障密度函数的变电站继电保护装置自动检测系统
Pub Date : 2022-10-13 DOI: 10.1109/PHM-Yantai55411.2022.9942210
Shuang Chen, Xi Yang, Zhen Gao, Xun Cui, Rong Liang, Lan Cheng
Because the traditional substation relay protection device automatic detection system has the problem of inaccurate detection results, the substation relay protection device automatic detection system based on the failure density function is designed. The hardware structure of the system is designed by the high-performance C8051F040 single chip microcomputer and the insulation detection sensor. On the basis of the system hardware design, the system software function is optimized. According to the relay protection current setting calculation flow, the genetic algorithm is derived to construct the failure density function, and the automatic detection of the relay protection device in the substation is carried out, Through the hardware design and software design of the system, the design of automatic detection system of substation relay protection device based on genetic algorithm is completed. The experimental results show that the designed system can detect the insulation voltage of positive and negative bus more accurately and has high practicability in the practical application process, which fully meets the research requirements.
针对传统变电站继电保护装置自动检测系统存在检测结果不准确的问题,设计了基于故障密度函数的变电站继电保护装置自动检测系统。系统的硬件结构采用高性能C8051F040单片机和绝缘检测传感器进行设计。在系统硬件设计的基础上,对系统软件功能进行了优化。根据继电保护电流整定计算流程,推导遗传算法构造故障密度函数,对变电站内继电保护装置进行自动检测,通过系统的硬件设计和软件设计,完成了基于遗传算法的变电站继电保护装置自动检测系统的设计。实验结果表明,所设计的系统能较准确地检测出正负极母线的绝缘电压,在实际应用过程中具有较高的实用性,完全满足了研究要求。
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引用次数: 0
Aeroengine Robust Component Model Design Based on 3D Virtual Design 基于三维虚拟设计的航空发动机鲁棒部件模型设计
Pub Date : 2022-10-13 DOI: 10.1109/PHM-Yantai55411.2022.9942002
Dan Zhao, Ming-fei Qu
Aero engine is the focus of aero power research and development. Due to its complex structure, long development cycle and high scientific research investment, the cost and risk of engine test are high, and the advantages of 3D virtual design are reflected. For this reason, the aeroengine component model based on 3D virtual design is designed. This paper deeply analyzes the aeroengine exterior components, applies the 3D virtual technology to realize the 3D virtual visualization of aeroengine exterior components, and then establishes the exterior component model base through Virtual reality modeling language (VRML). Finally, the 3D virtual model of shape components is simplified based on Level of detail (LOD) algorithm. The experimental results show that compared with the given maximum limit, the design delay of the model in this paper is small, and the deviation between the model and the entity is small, indicating that the application performance of the model is good.
航空发动机是航空动力研究与开发的重点。由于其结构复杂、开发周期长、科研投入高,发动机试验成本和风险高,3D虚拟设计的优势得以体现。为此,设计了基于三维虚拟设计的航空发动机部件模型。本文对航空发动机外部部件进行了深入分析,应用三维虚拟技术实现了航空发动机外部部件的三维虚拟可视化,并通过虚拟现实建模语言(VRML)建立了外部部件模型库。最后,基于细节层次(LOD)算法对形状部件的三维虚拟模型进行了简化。实验结果表明,与给定的最大极限相比,本文模型的设计延迟较小,模型与实体之间的偏差较小,表明模型的应用性能较好。
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引用次数: 0
A Microfluidic Oil Particles Monitoring System based on Raspberry Pi 基于树莓派的微流控油颗粒监测系统
Pub Date : 2022-10-13 DOI: 10.1109/PHM-Yantai55411.2022.9941791
Zhenzhen Liu, Yan Liu, Hongfu Zuo, Han Wang, Hang Fei, Zhiqiang Jiang
The health status of an aero-engine provides the basic guarantee for the safe flight of an aircraft, and the oil monitoring technology based on oil wear particles analysis is a standard method in the field of aero-engine condition monitoring. This paper aims to design miniaturization, intelligence, and real-time monitoring equipment. Firstly, an experimental monitoring platform is built based on Raspberry Pi. Then images of moving particles flowing through the microfluidic chip are collected by image acquisition software. Finally, the target particles are accurately extracted, and parameters are calculated using significance analysis. The experimental results show that the system is easy to use and provides an efficient and accurate contour identification method, which can be used for intelligent industrial applications in aero-engines and large rotating machines.
航空发动机的健康状态是飞机安全飞行的基本保障,基于油液磨损颗粒分析的油液监测技术是航空发动机状态监测领域的标准方法。本文旨在设计小型化、智能化、实时化的监控设备。首先,基于树莓派搭建了一个实验监测平台。然后通过图像采集软件采集运动颗粒流过微流控芯片的图像。最后,对目标粒子进行精确提取,并利用显著性分析计算参数。实验结果表明,该系统易于使用,为航空发动机和大型旋转机械的智能化工业应用提供了一种高效、准确的轮廓识别方法。
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引用次数: 0
A Novel Maximum-Entropy Bayesian Integration Approach for Reliability Analysis 可靠性分析中一种新的最大熵贝叶斯积分方法
Pub Date : 2022-10-13 DOI: 10.1109/PHM-Yantai55411.2022.9942055
Bowen Li, Bingyi Li, Jiahui He, Hongbin Liu, X. Jia, B. Guo
Reliability analysis based on data from various source is common today. Bayes theory is proved effectively in integrating prior information and field information. However, the complicated calculation and limited applicability have a negative effect on solution. And the fusion is imbalanced in some case. This paper investigates a novel approach to integrate degradation data and lifetime data for reliability analysis. Firstly, inverse Gaussian process model is adopted to model the degradation and the crude estimation can be solved by degradation data. After that, a constrained maximum-entropy Bayesian integration model is proposed for exploring more information from reliability life test. For simplifying the calculation, a pivot variable, failure probability, is defined and updated in this model. This allows us to derive the model parameters by fitting the failure probability curve rather than the calculation on Bayes posterior distribution. Accordingly, the reliability assessment can be conducted based on the inverse Gaussian process model. A case study illustrates the validity and improvement of the proposed method.
基于各种来源数据的可靠性分析在今天很常见。证明了贝叶斯理论在先验信息和场信息的整合方面是有效的。然而,计算复杂,适用性有限,对求解产生了不利影响。在某些情况下,这种融合是不平衡的。本文研究了一种集成退化数据和寿命数据进行可靠性分析的新方法。首先,采用逆高斯过程模型对退化进行建模,利用退化数据求解粗糙估计;在此基础上,提出了约束最大熵贝叶斯积分模型,从可靠性寿命试验中挖掘出更多的信息。为了简化计算,在模型中定义并更新了一个枢轴变量——失效概率。这使得我们可以通过拟合失效概率曲线而不是计算贝叶斯后验分布来获得模型参数。因此,可靠性评估可基于逆高斯过程模型进行。实例分析表明了该方法的有效性和改进。
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引用次数: 0
Simulation of seasonal variation characteristics of offshore water temperature based on ROMS model 基于ROMS模型的近海水温季节变化特征模拟
Pub Date : 2022-10-13 DOI: 10.1109/PHM-Yantai55411.2022.9942034
S. Han, Zhong-Min Wang
Based on the Regional Ocean Modeling System (ROMS) to simulate the water temperature in the Bohai Sea, the Yellow Sea and the East China Sea with high resolution. By processing and analyzing of the simulation results and comparison with WOA13 data and previous research data, it is proved that the ROMS model has a good simulation effect on seawater temperature. At the same time, the seasonal variation characteristic and distribution law of water temperature in the Bohai Sea, the Yellow Sea and the East China Sea are obtained.
基于区域海洋模拟系统(ROMS)对渤海、黄海和东海的高分辨率水温进行模拟。通过对模拟结果的处理和分析,以及与WOA13数据和前人研究数据的对比,证明了ROMS模型对海水温度具有较好的模拟效果。同时,得到了渤海、黄海和东海水温的季节变化特征和分布规律。
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引用次数: 2
A Component Importance Measure Considering System Topology 一种考虑系统拓扑的构件重要性度量方法
Pub Date : 2022-10-13 DOI: 10.1109/PHM-Yantai55411.2022.9942208
Min Luo, Yimiao Yao
In order to solve the problem that the current importance measures cannot fully reflect the position of the components in rail transit vehicle, this paper proposes an importance measures method that considering system topology. Firstly, this method describes the topological structure of the system by complex network theory, and distinguishes different nodes by assigning attributes to them. Then, the improved grey relational analysis method is adopted to evaluate the importance of the components in the system by considering the properties of the components themselves and the statistical characteristics based on the complex network. Finally, the feasibility of the method is verified by a case study.
为解决现有重要性测度不能充分反映轨道交通车辆部件位置的问题,提出了一种考虑系统拓扑的重要性测度方法。该方法首先利用复杂网络理论描述系统的拓扑结构,并通过赋予节点属性来区分节点;然后,采用改进的灰色关联分析方法,综合考虑组件本身的性质和基于复杂网络的统计特征,对系统中组件的重要性进行评价;最后,通过实例验证了该方法的可行性。
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引用次数: 0
Comprehensive Evaluation Method of Moral Education in Colleges And Universities Based on Viterbi Algorithm 基于Viterbi算法的高校德育综合评价方法
Pub Date : 2022-10-13 DOI: 10.1109/PHM-Yantai55411.2022.9942214
Xinjiu Liang, Shuilan Song
In view of the relatively poor index selection and sorting ability of the current comprehensive evaluation method of moral education in colleges and universities, which leads to serious distortion of the evaluation results, a comprehensive evaluation method of moral education in colleges and universities is proposed. Using the Viterbi method to analyze the factors that affect the quality of moral education of college students, an index system for the evaluation of moral education in colleges is established. Using the analytic hierarchy process, on this basis, the weight of the comprehensive evaluation index of university moral education is calculated. The fuzzy comprehensive evaluation method is used to construct a comprehensive evaluation model of moral education in colleges and universities, and obtain the evaluation results. So far, the design of the comprehensive evaluation method of moral education in colleges and universities based on the Viterbi algorithm is completed. The experimental link is constructed, and the experimental results confirm that the evaluation results of this method have high reliability and are better than the evaluation effect of the current method.
针对现行高校德育综合评价方法指标选取和整理能力较差,导致评价结果严重失真的问题,提出了一种高校德育综合评价方法。运用维特比法对影响大学生德育质量的因素进行分析,建立了高校德育质量评价指标体系。在此基础上,运用层次分析法,计算出高校德育综合评价指标的权重。运用模糊综合评价方法,构建了高校德育工作的综合评价模型,并得到了评价结果。至此,完成了基于Viterbi算法的高校德育综合评价方法的设计。构建了实验环节,实验结果证实了该方法的评价结果具有较高的可靠性,且优于现有方法的评价效果。
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引用次数: 0
Fault Diagnosis of Rotating Machinery Based on FMEA and Zero-shot Learning 基于FMEA和零弹学习的旋转机械故障诊断
Pub Date : 2022-10-13 DOI: 10.1109/phm-yantai55411.2022.9942104
Boyang Zhao, Tong Li, Wei Dai, Junjun Dong
Data-driven intelligent fault diagnosis is now a research hotspot. However, the fault data collected in actual working conditions is limited, which leads to a decline in the diagnostic ability of fault diagnosis models that rely on balanced data in actual engineering. Fortunately, the zero-shot problem for some fault classes can be solved by transferring zero-shot learning from machine vision to rotating machinery fault diagnosis. Inspired by this, we propose an attribute description method based on Failure Mode and Effects Analysis (FMEA) to solve the problem of semantic description of rotating machinery fault data, so as to be used for zero-shot fault diagnosis of rotating machinery. The framework analyzes the failure modes of rotating machinery based on FMEA, and establishes a fault attribute dictionary. After that, the attribute classifier is trained using the multi-domain features of the data. Finally, the fault data of unknown class is diagnosed based on Euclidean distance. The effectiveness of the framework is verified by public datasets. This framework provides a new perspective for zero-shot fault diagnosis of rotating machinery.
数据驱动的智能故障诊断是目前的研究热点。然而,实际工况下采集到的故障数据有限,导致在实际工程中依赖平衡数据的故障诊断模型的诊断能力下降。幸运的是,将机器视觉中的零射击学习应用到旋转机械故障诊断中,可以解决某些故障类别的零射击问题。受此启发,我们提出了一种基于失效模式与影响分析(FMEA)的属性描述方法,解决旋转机械故障数据的语义描述问题,从而用于旋转机械的零弹故障诊断。该框架基于FMEA分析了旋转机械的故障模式,建立了故障属性字典。然后,利用数据的多域特征训练属性分类器。最后,基于欧氏距离对未知类别的故障数据进行诊断。公共数据集验证了该框架的有效性。该框架为旋转机械零弹故障诊断提供了新的视角。
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引用次数: 2
Deep Residual Net-Based Prognosis Method for Lithium-ion Batteries with Information Fusion from Different Scales 基于深度残差网络的不同尺度信息融合锂离子电池预测方法
Pub Date : 2022-10-13 DOI: 10.1109/phm-yantai55411.2022.9941914
Yafei Zhu, Xiang Li, Wei Zhang
Nowadays, prognosis methods based on deep learning have been successfully developed and applied in many industrial fields, such as energy, transportation, aero-space engineering etc. Lithium-ion battery prognosis is very important to indicate the health states of the energy system, which has been a hot topic in the past decades. In this paper, a new method is proposed for battery prognosis. The proposed architecture integrates the traditional DNN and CNN models, and divides the feature graph into two branches for separate computation. Residual network is also used in the prediction model for pursuing better effects. Residual block is implemented by a hidden layer connecting each branch’s inputs and outputs, which improves the model’s generalization ability. The proposed method takes up one-step prediction for CALCE lithium-ion data set. Experimental results show that the proposed method has a better prediction effect. Therefore, it is of great significance to predict the life of lithiumion batteries and become a new basis for a deep learning-based method to predict the life of lithium-ion batteries.
目前,基于深度学习的预测方法已经在能源、交通、航空航天等诸多工业领域得到了成功的发展和应用。锂离子电池的预测是反映能源系统健康状态的重要指标,是近几十年来研究的热点问题。本文提出了一种新的电池预测方法。该架构融合了传统的深度神经网络和CNN模型,并将特征图分成两个分支进行单独计算。为了追求更好的预测效果,在预测模型中还使用了残差网络。残差块由连接各分支输入输出的隐藏层实现,提高了模型的泛化能力。该方法对CALCE锂离子数据集进行了一步预测。实验结果表明,该方法具有较好的预测效果。因此,对锂离子电池寿命进行预测具有重要意义,成为基于深度学习的锂离子电池寿命预测方法的新基础。
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引用次数: 1
期刊
2022 Global Reliability and Prognostics and Health Management (PHM-Yantai)
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