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2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)最新文献

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Applying Prognostics and Health Management Technology in Battle Damage Assessment and Repair 预测与健康管理技术在战损评估与修复中的应用
Zhi-Feng You, Mingchang Song, F. Li
Prognostics and Health Management (PHM) is a technology of synthesizing logistics and maintenance. It forecasts the state of components’ health which can help maintenance work. Battlefield Damage Assessment and Repair (BDAR) is a special kind of maintenance work. They both have the common ground and the difference. PHM technology can help BDAR worker locate the damage part more quickly, and it can also help the BDAR commander make the rush-repair decision more accurately. But some special work which is the main work of this article for these purposes must be done: the characteristics of sensors’ using, the location scheme of sensors, the decision condition of rush-repair and the decision model.
预测和健康管理(PHM)是一种综合后勤和维护的技术。它可以预测部件的健康状态,从而帮助维护工作。战场损伤评估与修复(BDAR)是一种特殊的维修工作。两者既有共同之处,也有不同之处。PHM技术可以帮助BDAR工作人员更快地定位损坏部件,也可以帮助BDAR指挥员更准确地做出抢修决策。但为此必须做的主要工作是:传感器的使用特点、传感器的定位方案、抢修的决策条件和决策模型。
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引用次数: 0
Optimization Design and Reliability Analysis of Remanufacturing Coating Structure for Eccentric Shaft 偏心轴再制造涂层结构优化设计及可靠性分析
Junfang Xue, Li-Chun Chen, Xiufen Zhang
In order to solve the problem of optimization design and reliability analysis of eccentric shaft remanufacturing coating structure, the influence of design variable fluctuation on coating performance is considered based on response surface optimization. The Six Sigma Analysis (SSA) is introduced to improve the reliability of remanufacturing design schemes. Firstly, according to the sensitivity analysis, the optimization design variables of the structural optimization scheme are determined. Then, the full 2rd order polynomial response surface is established based on the experimental design data. With the Non-dominated Sorting Genetic Algorithm II (NSGAII) to solve the optimization problem, get a deterministic optimization scheme. Finally, the reliability of the deterministic optimization scheme is analyzed. The results show that the strength and stiffness of the eccentric shaft after remanufacturing still meet the design requirements, which provides a certain method reference and design reference for the eccentric shaft remanufacturing.
为了解决偏心轴再制造涂层结构的优化设计和可靠性分析问题,基于响应面优化,考虑了设计变量波动对涂层性能的影响。引入六西格玛分析(SSA)来提高再制造设计方案的可靠性。首先,根据灵敏度分析,确定结构优化方案的优化设计变量;然后,基于实验设计数据,建立了全二阶多项式响应面。用非支配排序遗传算法II (NSGAII)求解优化问题,得到确定性优化方案。最后,对确定性优化方案的可靠性进行了分析。结果表明,偏心轴再制造后的强度和刚度仍满足设计要求,为偏心轴再制造提供了一定的方法参考和设计参考。
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引用次数: 0
A Comparison of PM2 and CE Growth Planning Models Based on Parameters Analysis 基于参数分析的PM2与CE增长规划模型比较
Zhongsheng Li, Jin Fan, Changjun Wu, H. Tao, Peitong Wang, Yi-Ling Zhang
To obtain the reliable growth planning curve in the whole process of reliability growth test, reliability growth planning technology has developed and become an important part of the reliability growth plan. Reliability growth planning models, are generally used to describe reliability growth plans and produce growth planning curves. It is found that two widely used models, CE model and PM2 model, can produce very different growth planning curves even under the same input conditions. However, there are few papers to study the relationship and difference of these two models. This paper gives a comparison of the two models by studying on the relationships between the parameters of two models and the corresponding planning curves, considering that planning models are always influenced by their intrinsic parameters. The results show that, CE Model can correctly reflect the effect of Fix Effectiveness Factor and Management Strategy change on growth planning curve. In contrast, PM2 Model can not correctly reflect the effect of the two parameters change on growth planning curve. From this point of view, the CE Model seems more reasonable and acceptable than the PM2 Model.
为了获得可靠性增长试验全过程的可靠性增长规划曲线,可靠性增长规划技术得到了发展,并成为可靠性增长计划的重要组成部分。可靠性增长计划模型,一般用于描述可靠性增长计划并生成增长计划曲线。研究发现,即使在相同的投入条件下,CE模型和PM2模型这两种被广泛使用的模型也能产生非常不同的生长规划曲线。然而,研究这两种模式之间的关系和差异的论文却很少。考虑到规划模型总是受其固有参数的影响,本文通过研究两种模型的参数与相应规划曲线之间的关系,对两种模型进行了比较。结果表明,CE模型能较好地反映固定效用因子和管理策略变化对成长规划曲线的影响。相比之下,PM2模型不能正确反映这两个参数变化对生长规划曲线的影响。从这个角度来看,CE模型似乎比PM2模型更合理和可接受。
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引用次数: 0
A New Method for Computing Survival Signature Based on Extended Universal Generating Function 基于扩展通用生成函数的生存签名计算新方法
Binghui Xu, Dezhen Yang, C. Qian, Qiang Feng, Yi Ren, Zi-li Wang, Bo Sun
The survival signature, a new approach introduced by Coolen, has been used as an effective method to quantify the complex system’s reliability as it requires less computation cost than other algorithms. This paper develops a new method for computing the exact survival signature based on the system reliability block diagram by extending the universal generating function (UGF). And verification example and comparisons with enumerative method are presented for its correctness and efficiency.
生存特征是由Coolen提出的一种新方法,与其他算法相比,它需要更少的计算成本,因此被用作量化复杂系统可靠性的有效方法。本文通过对通用生成函数(UGF)的扩展,提出了一种基于系统可靠性方框图计算精确生存签名的新方法。通过实例验证了该方法的正确性和有效性,并与枚举法进行了比较。
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引用次数: 3
Multi-Time Scale Thermal Simulation Simulation-Assisted Lifetime Prediction of Power MOSFE T in LED Driver LED驱动器中功率MOSFE T的多时间尺度热仿真辅助寿命预测
Hao Niu, Shu-juan Wang, X. Ye, G. Zhai
Power MOSFETs (Metal Oxide Semiconductor Field Effect Transistor) has become one of the reliability-critical components in LED (lighting-emitting diode) driver applications. The failure types, which are stressed by temperature variations, are the dominant mechanisms of discrete power MOSFETs. During the operation of LED drivers, the thermal cycles come from different time constants, ranging from microseconds (caused by MOSFET switching losses) to minutes/hours (caused by the changing of ambient temperature and loads). In order to comprehensively understand thermal behaviours of power MOSFETs, this paper proposed a multi-timescale thermal modelling method for the stress analysis and lifetime prediction of power MOSFETs considering its operating mission profile. For the small timescale (device switching), an electro-thermal transient thermal simulation of MOSFETs is proposed, where the electrical simulation and thermal simulation are carried out in SABER to evaluate the turn-on/turn-off losses and ANSYS Icepak to analyze thermal stresses, respectively. For the large timescale, the system-level thermal model of the LED driver is built to evaluate the converter-level stresses. Afterward, considering two typical mission profiles of street lighting, the lifetime of the power MOSFET is predicted by using this multi-time scale model. This method can provide a more realistic way to predict the lifetime of power MOSFETs under different operation profiles.
功率mosfet(金属氧化物半导体场效应晶体管)已成为LED(发光二极管)驱动应用中可靠性关键元件之一。由温度变化引起的失效类型是分立功率mosfet的主要机制。在LED驱动器工作期间,热周期来自不同的时间常数,从微秒(由MOSFET开关损耗引起)到分钟/小时(由环境温度和负载变化引起)。为了全面了解功率mosfet的热行为,本文提出了一种考虑功率mosfet工作任务分布的多时间尺度热建模方法,用于功率mosfet的应力分析和寿命预测。对于小时间尺度(器件开关),提出了一种mosfet的电热瞬态热仿真方法,其中在SABER中进行电学仿真和热仿真来评估导通/关断损耗,在ANSYS Icepak中进行热应力分析。对于大时间尺度,建立了LED驱动器的系统级热模型来评估变换器级应力。然后,结合两种典型的街道照明任务,利用该多时间尺度模型预测了功率MOSFET的寿命。该方法为预测功率mosfet在不同工作状态下的寿命提供了一种更为现实的方法。
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引用次数: 0
Aerospace Quality Problem Close-Loop Management Based on Process Document Control 基于过程文件控制的航空航天质量问题闭环管理
Fengsheng Jia, Rui Lai
In order to improve aerospace quality problem closeloop work level and standardize the quality problem closeloop management, the quality problem close-loop process control method is studied based on close-loop document. By analyzing the key objects involved in the process of quality problem close-loop, characteristics of close-loop process document, close-loop role, and close-loop activity are defined. Combined with the quality problem close-loop guideline standard, quality problem close-loop process control mechanism is proposed. Quality problem closeloop stage is divided into six parts, and the operation contents of different close-loop stages are analyzed. Based on the process management requirements, a three-layer control structure model of quality problems close-loop is studied and constructed. The functional requirements of online management about quality problems close-loop are analyzed, and the system architecture is designed. A prototype system of quality problem close-loop management is developed. System test results show that the process control and integrated management of quality problem close-loop is realized.
为了提高航空航天质量问题闭环工作水平,规范质量问题闭环管理,研究了基于闭环文档的质量问题闭环过程控制方法。通过分析质量问题闭环过程中涉及的关键对象,定义了闭环过程文件、闭环角色和闭环活动的特征。结合质量问题闭环指导标准,提出了质量问题闭环过程控制机制。将质量问题闭环阶段分为六个部分,分析了不同闭环阶段的运行内容。基于过程管理要求,研究并构建了质量问题闭环的三层控制结构模型。分析了质量问题闭环在线管理的功能需求,设计了系统架构。开发了一个质量问题闭环管理原型系统。系统测试结果表明,实现了过程控制和质量问题闭环集成管理。
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引用次数: 0
A Method of Error Mode Effect Analysis for a Human-Computer Interaction System in Aviation 航空人机交互系统误差模态效应分析方法
Yaonan Ding, S. Zeng, Jianbin Guo, Meirong Yang
With the development of science and technology, the automation degree and reliability of machine are getting higher and higher. On the one hand, more stringent requirements are put forward for human beings. On the other hand, human factors have also become an important factor affecting the reliability of human-machine systems, especially in the aviation field. Although there are many classification methods for error, the analysis methods are mostly from a qualitative or quantitative point view. Moreover, the research objects are mostly partial and do not combine specific mission scenarios. In this paper, a new method of EMEA based on SHERPA, CRAM and HEART has been proposed. This method not only can effectively carry out retrospective analysis of error modes, but also integrate man, machine, media and mission to identify and calculate the probability of the error mode.
随着科学技术的发展,机器的自动化程度和可靠性越来越高。一方面,对人类提出了更严格的要求。另一方面,人为因素也成为影响人机系统可靠性的重要因素,特别是在航空领域。虽然对误差的分类方法很多,但分析方法大多是从定性或定量的角度出发的。此外,研究对象大多是局部的,没有结合具体的任务场景。本文提出了一种基于SHERPA、CRAM和HEART的EMEA新方法。该方法不仅可以有效地进行误差模式的回顾性分析,而且可以将人、机、媒、任务等综合起来识别和计算误差模式的概率。
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引用次数: 2
Simulation of Fatigue Crack Propagation Process after Overload Based on Cohesive Zone Model 基于黏聚区模型的超载后疲劳裂纹扩展过程模拟
Ruijin Zhang, Binbin Hu, Lida Xu, B. Cao
Fatigue failure due to varying load is one of the main failure modes in engineering. A large plastic deformation due to accidental tensile overload around the crack tip has a significant effect on the fatigue crack propagation. In order to simulate the crack propagation process, the Cohesive Zone Model (CZM) based on elastoplastic mechanics was studied to take into account the plastic deformation. Based on the bilinear cohesive constitutive model and experimental data, two parameters including cohesive fracture energy and material strength were determined. By comparing Digital Image Correlation (DIC) experiment results with simulation results, it was concluded that both the normal quasi-static model and the cohesion model had a good coincidence with the test data when the plastic area around the tip of crack was small. For a larger plastic zone around the crack tip, the cohesive model method was obviously better than the quasi-static model.
变载荷疲劳破坏是工程中主要的破坏形式之一。裂纹尖端意外拉伸过载引起的大塑性变形对疲劳裂纹扩展有重要影响。为了模拟裂纹扩展过程,研究了基于弹塑性力学的内聚区模型(CZM),考虑了塑性变形。基于双线性黏合本构模型和试验数据,确定了黏合断裂能和材料强度两个参数。通过数字图像相关(DIC)试验结果与仿真结果的比较,得出了当裂纹尖端周围塑性面积较小时,常规准静态模型和黏聚力模型与试验数据吻合较好。对于裂纹尖端周围较大的塑性区,内聚模型方法明显优于准静态模型方法。
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引用次数: 0
Traffic Network Resilience Analysis Based On The GCN-RNN Prediction Model 基于GCN-RNN预测模型的交通网络弹性分析
Xing Lv, Zi-li Wang, Yi Ren, Dezhen Yang, Qiang Feng, Bo Sun, Du Liu
Traffic network will inevitably appear to be congested. Once congestion occurs, the ability of the traffic network to quickly return to its original state to avoid affecting expansion will be critical. This work employs an efficient Graph Convolutional Network- Recurrent Neural Networks (GCN-RNN) prediction model to analysis the resilience of traffic network. Then, we trained the model by millions of GPS data. The result shows that the model can predict the trend of the state change of the road network well. At last, based on GCN-RNN model, we analyze the resilience of traffic network qualitatively and quantitatively, which has certain reference value for the resilience design of traffic network and the selection of network operation strategies.
交通网络将不可避免地出现拥堵。一旦发生拥塞,交通网络迅速恢复到原有状态,避免影响扩展的能力将是至关重要的。本文采用一种高效的图形卷积网络-递归神经网络(GCN-RNN)预测模型来分析交通网络的弹性。然后,我们用数以百万计的GPS数据来训练模型。结果表明,该模型能较好地预测路网状态变化趋势。最后,基于GCN-RNN模型对交通网络弹性进行了定性和定量分析,对交通网络弹性设计和网络运营策略选择具有一定的参考价值。
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引用次数: 4
Research on Redundancy Solution of Satellite Transponders Based on Reliability Analysis 基于可靠性分析的卫星转发器冗余解决方案研究
Xiao Xiong, Haitao Zhao, Taibin Hu
With the lifespan of most modern navigation and communication satellites greater than 10 years, it is very important to find an optimal redundancy solution for satellite transponders. In this paper, we propose redundancy solutions of satellite transponders with six signal paths. Firstly, we introduce the mathematical models of the reliability of typical schemes. Specifically, we propose a method to simplify the Boolean truth table and RBD (Reliability Block Diagrams) model by combining the full probability formula, to obtain the reliability analytical solution for the complex redundant system such as ring backup (hot/cold backup). We also provide the boundary conditions of different redundancy configuration tradeoffs based on reliability analytical solution. Monte Carlo simulation is used to verify the correctness of the analytical models and the analysis results. Finally, we verified the common redundancy solutions, and obtain the optimal solution based on analysis results. In satellite product design, the conclusion based on the method proposed in this paper can be considered in addition to the complexity and performance impact of the space borne product, which conform the basis to choose the redundancy solution for the designers.
随着现代导航和通信卫星的使用寿命超过10年,寻找卫星转发器的最佳冗余解决方案非常重要。本文提出了六路卫星转发器的冗余解决方案。首先,介绍了典型方案可靠性的数学模型。具体而言,我们提出了一种结合全概率公式简化布尔真值表和RBD(可靠性框图)模型的方法,以获得环备份(热/冷备份)等复杂冗余系统的可靠性解析解。在可靠性解析解的基础上,给出了不同冗余配置权衡的边界条件。通过蒙特卡罗仿真验证了分析模型和分析结果的正确性。最后,对常见的冗余解进行了验证,并根据分析结果得到了最优解。在卫星产品设计中,除了考虑星载产品的复杂性和性能影响外,还可以考虑基于本文方法得出的结论,为设计人员选择冗余方案提供了依据。
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引用次数: 1
期刊
2019 International Conference on Quality, Reliability, Risk, Maintenance, and Safety Engineering (QR2MSE)
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