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2016 11th International Conference on Reliability, Maintainability and Safety (ICRMS)最新文献

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Cascading failure of interdependent networks with traffic: Using a redundancy design to protect influential nodes 具有流量的相互依赖网络的级联故障:使用冗余设计来保护有影响的节点
Lijun Liu, Yongfeng Yin, Zenghu Zhang
With the rapid development of technology, several infrastructure networks are often coupled together and thus need to be modeled as interdependent networks. Because of potential overloads, interdependent networks are more fragile when suffering from attacks. Existing studies have primarily concentrated on the cascading failure process of interdependent networks without load, or the robustness of isolated network with traffic. Only limited research have been done on the cascading failure process caused by overload in interdependent networks. Redundancy is a primary design approach that can enhance the reliability and robustness of the system. In this paper, we propose a method that adds redundant design for the influential nodes in interdependent networks with traffic to suppress overloading. First, a detailed model with a redundant design and redundant level is introduced. Three strategies (Random, Degree and Betweenness) based on the potential knowledge of network centrality can be used to identify the influential nodes of networks. Then, two indicators are presented to evaluate the robustness of interdependent networks. Lastly, we analyze the common effects between the coupling strength and the redundancy on the invulnerability of interdependent networks. Experiments on two interdependent networks demonstrate that with a suitable coupling attributes (strength and preference) and a higher degree of redundancy, an interdependent network is more robust under random attacks. The results suggest that such a redundant design can permit construction of highly robust interactive networked systems.
随着技术的快速发展,多个基础设施网络经常耦合在一起,因此需要将其建模为相互依赖的网络。由于潜在的过载,相互依赖的网络在遭受攻击时更加脆弱。现有的研究主要集中在无负载的相互依赖网络的级联失效过程,或有流量的孤立网络的鲁棒性。对相互依赖网络中过载引起的级联失效过程的研究有限。冗余是提高系统可靠性和鲁棒性的主要设计方法。本文提出了一种在具有流量的相互依赖网络中对有影响的节点增加冗余设计以抑制过载的方法。首先,介绍了一个具有冗余设计和冗余级别的详细模型。基于网络中心性潜在知识的三种策略(Random、Degree和betweness)可用于识别网络的影响节点。然后,提出了两个指标来评估相互依赖网络的鲁棒性。最后,我们分析了耦合强度和冗余对相互依赖网络的抗灾性的共同影响。在两个相互依赖网络上的实验表明,具有合适的耦合属性(强度和偏好)和较高的冗余度,相互依赖网络在随机攻击下具有更强的鲁棒性。结果表明,这种冗余设计可以允许构建高度健壮的交互式网络系统。
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引用次数: 0
Research on failure mechanisms of domestic intelligent electric energy meters 国产智能电能表失效机理研究
Yang Xue, Penghe Zhang, Xingang Du, Chuning Peng, Yuhan Zou, Jiahai Zhang
Based on the repair records of malfunctioning electric energy meters in each province in China and using repair diagnoses, this article classifies failures by functional modules and analyzes failures under each type of malfunction. The focus is on the mode of failure and mechanism of the components and parts and on finding out the environmental stress that caused the failure, suggesting corresponding improvement measures for each link in the design and manufacturing of electric energy meters.
本文根据各省电能表故障维修记录,运用维修诊断方法,对电能表故障进行功能模块分类,并对各故障类型下的故障进行分析。重点分析了电能表零部件的失效方式和机理,找出了导致失效的环境应力,并针对电能表设计和制造的各个环节提出了相应的改进措施。
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引用次数: 0
A new technology framework for the reliability assessment and life prediction of a satellite power subsystem 卫星动力分系统可靠性评估与寿命预测的新技术框架
Xiaopeng Li, Hongzhong Huang, Wenming Zhou, Fuqiu Li
The power subsystem is one of the most important subsystems of a satellite. This subsystem, supplies the power for the satellite platform and payloads, and ensures the smooth completion of the satellite mission. An accurate reliability assessment and life prediction results provide useful information to for satellite development. This paper takes chooses a sample earth observation satellite's power subsystem for example, and proposes a new reliability assessment and life prediction technology framework. First, the reliability data of the subsystem components (-including the cd-ni battery, lithium-ion battery, solar cell array, and Power controllers) collected. Secondly, the CMSR — (Combined Modified Maximum Likelihood Estimation and Sequential Reduction (CMSR) method is used to determine the subsystem's reliability function according to the components' reliability data. The evaluate the reliability point estimation and reliability at the end of life are evaluated under some a Specified specific confidence level. Third, the (Mean Mission Duration Time (MMDT) of the subsystem calculated based on its reliability function. Through all the work above, the designer of the subsystem can test if the subsystem reliability level satisfies the design requirements. At the same time, the orbital life of the subsystem can be predicted before the satellite launches. Further — more, the reliability assessment, and life prediction results, and technology framework of the power subsystem can form the foundation of research into satellite reliability and life assurance.
动力子系统是卫星最重要的子系统之一。该子系统为卫星平台和有效载荷提供动力,保证卫星任务的顺利完成。准确的可靠性评估和寿命预测结果为卫星研制提供了有用的信息。本文以某对地观测卫星动力分系统为例,提出了一种新的可靠性评估与寿命预测技术框架。首先,收集子系统组件(包括镉镍电池、锂离子电池、太阳能电池阵列和电源控制器)的可靠性数据。其次,根据部件的可靠性数据,采用CMSR (Combined Modified Maximum Likelihood Estimation and Sequential Reduction, CMSR)方法确定子系统的可靠性函数;在某一特定的置信水平下,对可靠性点估计和寿命终点可靠性进行了评估。第三,根据子系统的可靠性函数计算子系统的平均任务持续时间(MMDT)。通过以上工作,子系统的设计者可以测试子系统的可靠性水平是否满足设计要求。同时,可以在卫星发射前对分系统的轨道寿命进行预测。此外,动力子系统的可靠性评估和寿命预测结果以及技术框架可以为卫星可靠性和寿命保障研究奠定基础。
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引用次数: 1
Study on optimization of backward compatible reflow soldering process 向后兼容回流焊工艺的优化研究
Y. Zou, Weiming Li, Hongqin Wang, D. Luo
Due to the promotion of the globalization of environmental protection process, some high reliability requirements of electronic products have to be passive to the backward compatible soldering process. Compared to the traditional Sn-Pb soldering process, the backward compatible soldering process has to face with a smaller process window and a higher process implementation difficulty. In this paper, the technical characteristics of backward compatible reflow soldering process are studied, and the basic idea for process optimization is presented. In view of a typical product, based on the failure mechanism of product history and the present situation of reflow-soldering process, the design and implementation of the reflow soldering process optimization experiment is carried out, and the optimized process curve is obtained. The optimized results show that the quality and reliability of the optimized products meet the requirements of the investigated product.
由于环保全球化进程的推进,一些对可靠性要求较高的电子产品不得不被动采用后向兼容的焊接工艺。与传统锡铅焊锡工艺相比,后向兼容焊锡工艺面临着更小的工艺窗口和更高的工艺实现难度。本文研究了后向兼容回流焊工艺的技术特点,提出了工艺优化的基本思路。针对某典型产品,基于产品历史失效机理和回流焊工艺现状,进行了回流焊工艺优化实验的设计与实现,得到了优化后的工艺曲线。优化结果表明,优化后的产品质量和可靠性均满足研究产品的要求。
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引用次数: 1
Test case design method targeting environmental fault tolerance for high availability clusters 针对高可用性集群环境容错的测试用例设计方法
Qingfeng Du, Kangin Yin, J. Qiu, Huan Li, Kun Shi, Yue Tian, Aoyu Ma
With increasing critical business organizations focusing on the quality of service in cloud applications, high availability (HA) has become critical for the product level cluster of cloud applications. Existing availability evaluation methods or testing projects for cloud platforms, however, cannot sufficiently verify cluster tolerance to various reasonable environmental faults. This paper proposes a test case design method targeting environmental fault tolerance for HA clusters. Test cases are designed considering fault modes and components of a cluster application in diverse scenarios. As a result, the fault tolerance of different components to various reasonable faults can be verified via the proposed method. A case study is conducted on Openstack, a widely used open source software platform for cloud environments, to show the feasibility of using this method.
随着越来越多的关键业务组织关注云应用程序中的服务质量,高可用性(HA)已成为云应用程序的产品级集群的关键。然而,现有的云平台可用性评估方法或测试项目无法充分验证集群对各种合理环境故障的容错性。提出了一种针对高可用性集群环境容错的测试用例设计方法。测试用例的设计考虑了不同场景下集群应用程序的故障模式和组件。通过该方法可以验证不同部件对各种合理故障的容错能力。并以Openstack为例,说明了该方法的可行性。Openstack是一种广泛使用的云环境开源软件平台。
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引用次数: 1
Reliability assessment of ZPW-2000A track circuit using Bayesian network 基于贝叶斯网络的ZPW-2000A轨道电路可靠性评估
Leiying Jiang, Xiaoming Wang, Yiliu Liu
Nowadays, railway systems are expected to have high reliability, availability, maintainability, and safety. Thousands of ZPW-2000A track circuits are in operation on the mainline and high-speed railway network in China. This paper presents a scheme for reliability assessment of ZPW-2000A track circuit using Bayesian network. First, a fault tree is built based on expert experience and failure investigation. Then, fault tree model of the ZPW-2000A track circuit is converted into Bayesian network. Finally, quantitative analysis based on the Bayesian network is performed, including forward analysis and backward analysis, to calculate the system reliability and recognize vulnerabilities in the system. The validity of the proposed method is fundamental and meaningful for the real-time reliability assessment and condition based maintenance of ZPW-2000A track circuit.
如今,铁路系统被期望具有高可靠性、可用性、可维护性和安全性。成千上万的ZPW-2000A轨道电路在中国的干线和高速铁路网上运行。提出了一种利用贝叶斯网络对ZPW-2000A轨道电路进行可靠性评估的方案。首先,基于专家经验和故障调查建立故障树;然后,将ZPW-2000A轨道电路的故障树模型转化为贝叶斯网络。最后,基于贝叶斯网络进行定量分析,包括前向分析和后向分析,计算系统可靠性,识别系统漏洞。该方法的有效性对ZPW-2000A轨道电路的实时可靠性评估和状态维修具有重要意义。
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引用次数: 4
AHP based evaluation method for technology readiness level of DC-DC converter 基于AHP的DC-DC变换器技术成熟度评价方法
Jiaoying Huang, Xubo Lv, Cheng Gao
DC-DC converter is an electronic circuit that converts a source of direct current (DC) from one voltage level to another. It's widely used because of its short design period and high reliability. It is very important to evaluate technology readiness level (TRL) of DC-DC converter accurately. In this paper, Analytic hierarchy process (AHP) based evaluation method is proposed to calculate TRL value of DC-DC converter. A hierarchy model of objective remaining to be evaluated needs to be developed in the beginning. The structure of model is divided into three layers respectively called objective layer, criteria layer and alterative layer. Objective layer consists of the device itself and comprises several criterions such as technology, material, design and manufacturing. The third layer includes all concerning specific elements. Then, assign weight value for each criterion and construct normalized pairwise comparison matrix. Maximum eigenvalue and corresponding eigenvector is calculated by mathematical method for further consistency examination, which ensures the reliability of decision maker. Finally, TRL of the device can be calculated as 0.93 according to known TRL value of each element of it. The result shows that TRL of DC-DC converter is more than 0.9, which means it is in the condition of high maturity and is suitable for large-scale application.
DC-DC转换器是一种将直流电源从一个电压电平转换到另一个电压电平的电子电路。由于其设计周期短、可靠性高,得到了广泛的应用。准确评估DC-DC变换器的技术就绪水平(TRL)是非常重要的。本文提出了基于层次分析法(AHP)的DC-DC变换器TRL值计算方法。一开始需要建立待评价目标的层次模型。模型结构分为三层,分别称为目标层、准则层和备选层。客观层由器件本身组成,包括工艺、材料、设计和制造等几个标准。第三层包括所有与特定元素有关的内容。然后,对各指标赋权值,构造归一化两两比较矩阵。通过数学方法计算最大特征值和对应的特征向量,进一步进行一致性检验,保证了决策者决策的可靠性。最后,根据已知装置各元素的TRL值,计算出装置的TRL为0.93。结果表明,DC-DC变换器的TRL > 0.9,成熟程度高,适合大规模应用。
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引用次数: 0
Research of aircraft equipment cabin layout optimization methods based on virtual maintenance 基于虚拟维修的飞机设备客舱布局优化方法研究
Long Xue, Dong Zhou, Wenqiang Zhou
Aircraft equipment cabin layout design is an important part of aircraft design. It refers to the reasonable arrangement of each piece of equipment and component in a limited space. Currently, aircraft equipment cabin maintenance difficulties are common, time-consuming, uneconomical, and are serious maintenance problems. In order to improve the accuracy and quality of maintenance design, a virtual maintainability design method is proposed, using DELMIA as a tool to build the virtual environment, which can be used to verify and improve maintainability. The maintenance visibility, accessibility, operating space, and working gesture are treated as objective functions. The functional constraints and aircraft equipment cabin layout rules are also considered, and are formulated as constraints. Thus, a combination algorithm model for maintainability is presented. According to the characteristics of the equipment layout problem, a modified particle swarm is used to improve the computational efficiency and solution accuracy. Finally, the application of a fighter electronic cabin is studied in detail to illustrate the effectiveness and usefulness of the proposed method. The results show that virtual maintainability design can be implemented to solve the layout optimization problem.
飞机设备客舱布局设计是飞机设计的重要组成部分。它是指在有限的空间内对每一件设备和部件进行合理的布置。目前,飞机设备客舱维修困难普遍,耗时长,不经济,是严重的维修问题。为了提高维修设计的准确性和质量,提出了一种虚拟维修性设计方法,以DELMIA为工具构建虚拟环境,用于验证和提高维修性。维护可见性、可达性、操作空间和工作姿态被视为目标函数。同时考虑了功能约束和飞机设备座舱布置规则,并将其表述为约束条件。为此,提出了一种可维护性的组合算法模型。针对设备布局问题的特点,采用改进的粒子群算法提高了计算效率和求解精度。最后,以某型战斗机电子座舱为例,详细说明了所提方法的有效性和实用性。结果表明,虚拟可维护性设计可用于解决布局优化问题。
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引用次数: 1
Diagnostic ability validation methods for prognostics and health management systems in complex systems 复杂系统中预后和健康管理系统的诊断能力验证方法
Yi Du, Chengjun Song, F. Su, Zhilin Wang
PHM (Prognostics and Health Management) is a key technology in autonomic logistics equipment. It is also the newest development in the current equipment system, BIT (Built-In Test), because of its condition monitoring abilities. PHM technology marks a transformation from condition monitoring to health management. The PHM design philosophy has also been adopted in the development of new generation military and civilian equipment. In the complex systems of military and civilian equipment, such as electromechanical systems and flight control systems, the PHM design has been adopted as a new function design. The diagnostic capabilities of PHM are its core foundation, and its design level has a direct influence on the overall efficiency of PHM. This influence is mainly reflected in its fault detection capabilities, and its comprehensive processing and analysis capabilities. In order to validate the PHM fault diagnostic design level, we propose a new diagnostic capability validation method for complex systems. Our proposed method is based on testability validation technology, and provides a guideline for technological approaches for PHM diagnostic validation that evaluates the integrity, rationality, and effectiveness of PHM diagnostic capabilities. Moreover, our proposed method can expose design defects and weak links, allowing for an iterative optimal design.
PHM (Prognostics and Health Management)是自动化物流设备中的一项关键技术。它也是当前设备系统BIT(内置测试)的最新发展,因为它具有状态监测能力。PHM技术标志着从状态监测到健康管理的转变。PHM设计理念也被用于新一代军用和民用设备的开发。在机电系统、飞控系统等军民装备复杂系统中,PHM设计已成为一种新的功能设计方法。诊断能力是PHM的核心基础,其设计水平直接影响到PHM的整体效率。这种影响主要体现在其故障检测能力和综合处理分析能力上。为了验证PHM故障诊断设计水平,提出了一种新的复杂系统诊断能力验证方法。我们提出的方法基于可测试性验证技术,并为PHM诊断验证的技术方法提供了指导方针,以评估PHM诊断能力的完整性,合理性和有效性。此外,我们提出的方法可以暴露设计缺陷和薄弱环节,允许迭代优化设计。
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引用次数: 2
Research method for determining preventive maintenance period based on time stress factors 基于时间压力因素的预防性维修周期确定方法研究
Xing Jin, Yan Zhou, Zhaoyang Zeng, B. Liu
Determining the time interval for preventive maintenance is one of the most important duties in programming maintenance guides. The purpose of planning the time interval is to keep and restore the reliability of equipment, which means selecting the suitable interval to avoid failures before they occur. Existing methods of determining a fixed-time interval always ignore influences such as cumulative failure, overhaul, and repair, which could cause insufficient maintenance or surplus inspection. Therefore, making full use of preventative maintenance is a matter of being able to arrange the time interval introduced by time stress factors that could reflect the effect of cumulative failure, repair, overhaul, etc. By extending or shortening the time interval according to the specific circumstances of equipment, a modified method of time-interval determination is proposed and verified.
确定预防性维护的时间间隔是维护指南编程中最重要的任务之一。规划时间间隔的目的是为了保持和恢复设备的可靠性,即选择合适的时间间隔以避免故障发生。现有的确定固定时间间隔的方法总是忽略诸如累积故障、大修和修理等影响,这些影响可能导致维护不足或检查过剩。因此,充分利用预防性维护就是能够安排好时间应力因素引入的时间间隔,以反映累积故障、修理、大修等的影响。根据设备的具体情况,延长或缩短时间间隔,提出了一种改进的时间间隔确定方法,并进行了验证。
{"title":"Research method for determining preventive maintenance period based on time stress factors","authors":"Xing Jin, Yan Zhou, Zhaoyang Zeng, B. Liu","doi":"10.1109/ICRMS.2016.8050131","DOIUrl":"https://doi.org/10.1109/ICRMS.2016.8050131","url":null,"abstract":"Determining the time interval for preventive maintenance is one of the most important duties in programming maintenance guides. The purpose of planning the time interval is to keep and restore the reliability of equipment, which means selecting the suitable interval to avoid failures before they occur. Existing methods of determining a fixed-time interval always ignore influences such as cumulative failure, overhaul, and repair, which could cause insufficient maintenance or surplus inspection. Therefore, making full use of preventative maintenance is a matter of being able to arrange the time interval introduced by time stress factors that could reflect the effect of cumulative failure, repair, overhaul, etc. By extending or shortening the time interval according to the specific circumstances of equipment, a modified method of time-interval determination is proposed and verified.","PeriodicalId":347031,"journal":{"name":"2016 11th International Conference on Reliability, Maintainability and Safety (ICRMS)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2016-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130429448","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
期刊
2016 11th International Conference on Reliability, Maintainability and Safety (ICRMS)
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