可靠性的概念

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引用次数: 4

摘要

第一章介绍了可靠性的基本概念及其相互关系。定义了可靠度函数、累积分布函数、概率密度函数和危害率函数这四个概率函数,完整地描述了失效过程。本文阐述了在可靠性工程设计过程中起重要作用的三种故障率——MTBF、MTTF、mttr。参考浴盆曲线,讨论了三种失效模式:DFR、CFR和IFR。给出了两种概率模型:指数模型和威布尔模型。介绍了串并联系统及其可靠性的应用领域。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Reliability Concepts
The first chapter introduces basic concepts of Reliability and their relationships. Four probability functions—reliability function, cumulative distribution function, probability density function, and hazard rate function—that completely characterize the failure process are defined. Three failure rates— MTBF, MTTF, MTTR—that play important role in reliability engineering design process are explained here. The three patterns of failures, DFR, CFR, and IFR, are discussed with reference to the bathtub curve. Two probability models, Exponential and Weibull, are presented. Series and parallel systems and application areas of reliability are also presented.
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