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针对复杂大型测控装备系统工程的管理,开展测控装备故障预测与健康管理技术研究。以某型雷达抗干扰测试系统为例,阐述可应用于测控装备故障预测与健康管理的一种科学管理方法,提出基于模型的PHM技术在抗干扰测试系统中应用,达到提高装备技术状态稳定性、提升维修保障效率,降低全寿命周期成本的目的。有助于加强装备质量管理模式体系化、信息化发展。 相似文献
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随着汽车行业的发展,对汽车的性能检测、维修、管理提出更高的要求。通过分析多传感器数据融合技术故障诊断方法及汽车诊断系统(故障预测与健康管理)的特点,在不改变当前汽车智能检测系统硬件组成的情况下,将多传感器信息融合技术运用到汽车诊断系统,并且比较智能化分析系统的故障,以及记录下全部传感器和驱动器的数据,实现对汽车系统的实时状态监测、健康评估和故障诊断。 相似文献
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武器装备全寿命周期管理的需求推动了雷达故障预测与健康管理技术的研究和发展,雷达装备也逐步由原先的预防性维修和事后维修模式向视情维修模式转变。大数据技术和雷达健康管理系统的有机结合,可以有效地整合雷达在役阶段的数据资源,与设计、制造、售后等其他寿命周期阶段串联在一起,真正实现雷达装备的全寿命周期管理。提出一种基于大数据的雷达健康管理系统的网络平台框架,并介绍了雷达健康管理系统的关键技术。 相似文献
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基于对航空可靠性、安全性和经济性方面的需求,对航空电气设备的故障预测与健康管理技术越来越多地得到了重视与应用,在国外的航空设备检测技术中,故障检测与健康管理技术已经成为了核心技术.介绍了航空电气设备故障预测与健康管理(PHM)技术,针对航空典型电气设备的故障预测与健康管理系统建模的重点内容,分析了航空电气设备的故障预测与健康管理技术的整体预测过程、相应应用策略. 相似文献
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<正>中国动车维修战略优化研究正越来越受到国际重视,其中故障预知和健康管理(PHM)的关键技术研究和高速铁路动车牵引系健康预警管理是中国目前动车维修战略优化的研究重点。因此,本文首先阐述了动车组牵引系统的概念及其特性,并针对特性建立牵引系统健康评估的模型,并对高速动车组牵引系统健康预测管理算法进行分析和讨论,希望能为相关人员提供一些新的思路。 相似文献
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综合化航空电子系统PHM应用与设计 总被引:1,自引:0,他引:1
故障预测与健康管理(PHM)技术应用是保障电子系统任务完成成功率的重要手段和方法。对航空电子系统的PHM应用及设计思路进行了探讨,提出了PHM系统功能关系及适合综合化航空电子系统的健康管理体系。对PHM工程实现的主要关键技术及解决方案进行了研究,重点分析了基于测试性模型的多信号增强诊断方法,以及基于马尔科夫和贝叶斯网络的健康评估方法,对最终实现航空电子系统的PHM全面应用具有指导意义。 相似文献
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任务系统是特种飞机能力的关键因素,对其开展故障预测诊断及健康管理技术(Prognostic and Health Management,PHM)的研究是一项重要课题.目前任务系统综合化程度不断提高,故障诊断难度不断加大.结合任务系统的使用场景以及综合化系统的结构特点,对P HM系统的层次结构、基础资源要素、功能要素、综... 相似文献
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This paper presents a model that enables the optimal interpretation of prognostics and health management (PHM) results for electronic systems. In this context, optimal interpretation of PHM results means translating PHM information into maintenance policies and decisions that minimize life cycle costs, or maximize availability or some other utility function. The electronics PHM problem is characterized by imperfect and partial monitoring, and a random/overstress failure component must be considered in the decision process. Given that the forecasting ability of PHM is subject to uncertainties in the sensor data collected, the failure and damage accumulation models applied, the material dimensions and properties used in the models, the decision model in this paper addresses how PHM results can best be interpreted to provide value to the system maintainer. The result of this model is a methodology for determining an optimal safety margin and prognostic distance for various PHM approaches in single and multiple socket systems where the LRU’s in the various sockets that make up a system can incorporate different PHM approaches (or have no PHM structures at all).The discrete event simulation model described in this paper provides the information needed to construct a business case showing the application-specific usefulness for various PHM approaches including health monitoring (HM) and life consumption monitoring (LCM) for electronic systems. An example business case analysis for a single socket system is provided. 相似文献
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Condition based maintenance (CBM) aims to balance two extreme sides (i.e., corrective maintenance (CM), and preventive maintenance (PM)) by observing and forecasting the real time health of machines. Recent developments in CBM revealed promising technologies for advanced fault detection, and forecasting. Traditional maintenance scheduling in CBM is based on the threshold setting on forecasted failure probability, or remaining useful life (RUL) for individual components. However, this approach may not give the best result for the system, because individual components are inter-related, and mutually dependent. It is not uncommon in systems that turning off a machine due to failure or maintenance causes other machinery or components to be turned off. Designing a comprehensive tool that optimizes availability & cost of the whole system incorporating prognostics information is crucial to fully benefit from CBM. The goal of this paper is to emphasize this need by demonstrating scenarios in CM, PM, and CBM; and to present a solution that optimizes system availability, and cost with system-maintenance constraints using genetic algorithms. The proposed tool acquires the forecasted failure probability of individual components from the prognostics module, and their reliability expectations after maintenance. The tradeoff between maintenance & failure is quantified in risk as the objective function to be minimized. The risk is minimized utilizing genetic algorithms for the whole system rather than individual components. The results of the proposed tool are compared with PM, CM, and CBM in which prognostics information of components are analyzed individually. 相似文献
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Life cycle cost impact of using prognostic health management (PHM) for helicopter avionics 总被引:2,自引:0,他引:2
E. Scanff K.L. Feldman S. Ghelam P. Sandborn M. Glade B. Foucher 《Microelectronics Reliability》2007,47(12):1857-1864
Case studies were conducted using a stochastic model to predict the life cycle cost impact associated with the application of prognostic health management (PHM) to helicopter avionics. The life cycle costs of systems that assumed unscheduled maintenance and fixed-interval scheduled maintenance were compared to the costs of precursor-to-failure and life consumption monitoring PHM approaches, and the optimal safety margins and prognostic distances were determined. 相似文献