可靠度

可靠度（Reliability），指产品在规定的条件下和规定的时间内，完成规定任务的概率。若一批产品的总数为 N，当 t = 0 时开始使用，随着时间增加，失效的产品数量 r(t) 逐渐增加。若产品在任意时间 t 的可靠度为 R(t)，则

R(t)=\frac{N-r(t)}{N}

而不可靠度 F(t) 则为

F(t)=\frac{r(t)}{N}=1-R(t)

在 t 时刻尚未失效的产品，在该时刻后的单位时间内发生失效的概率，称为产品的瞬时失效率。则失效率

\lambda(t)=\frac{f(t)}{R(t)}

单词	Reliability engineering
释义	Reliability engineering 中文百科可靠度可靠度（Reliability），指产品在规定的条件下和规定的时间内，完成规定任务的概率。若一批产品的总数为 N，当 t = 0 时开始使用，随着时间增加，失效的产品数量 r(t) 逐渐增加。若产品在任意时间 t 的可靠度为 R(t)，则 $R(t)=\frac{N-r(t)}{N}$ 而不可靠度 F(t) 则为 $F(t)=\frac{r(t)}{N}=1-R(t)$ 在 t 时刻尚未失效的产品，在该时刻后的单位时间内发生失效的概率，称为产品的瞬时失效率。则失效率 $\lambda(t)=\frac{f(t)}{R(t)}$ 英语百科 Reliability engineering 可靠度 Reliability engineering is engineering that emphasizes dependability in the lifecycle management of a product. Dependability, or reliability, describes the ability of a system or component to function under stated conditions for a specified period of time. Reliability may also describe the ability to function at a specified moment or interval of time (Availability). Reliability engineering represents a sub-discipline within systems engineering. Reliability is theoretically defined as the probability of success (Reliability=1-Probability of Failure), as the frequency of failures; or in terms of availability, as a probability derived from reliability, testability and maintainability. Testability, Maintainability and maintenance are often defined as a part of "reliability engineering" in Reliability Programs. Reliability plays a key role in the cost-effectiveness of systems.
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Reliability engineering

可靠度

Reliability engineering 可靠度