摘要
对失效率λ(t)和瞬时失效率h(t)所具有的实际含义和表征内容进行了深入的探讨。同时详解了失效密度函数f(t)在可靠性工程计算中具有将随机失效数转变为连续变化量的作用。对这几个可靠性参量在工程应用和计算时的适用场合作了分析。通过简洁易懂的论述和实际的计算实例,重点说明了瞬时失效率的3个特点,希望在可靠性基础理论的学习中正确地理解失效率和瞬时失效率的意义。
The actual meaning and characterization content of failure rate A （t） and instantaneous failure rate h （t） are discussed deeply. At the same time, the role of failure density function f （t） which turned random failure numbers into continuous variations in reliability engineering calculation is explained. The suitable occasions of these reliability parameters in engineering application and calculation are analyzed. Through the simple discussion and practical calculation examples, instantaneous failure rate of the three characteristics are illustrated, allowing the learners of reliability basic theories understand the failure rate and instantaneous failure rate correctly.
出处
《电子产品可靠性与环境试验》
2013年第2期41-48,共8页
Electronic Product Reliability and Environmental Testing
关键词
失效率
瞬时失效率
失效密度函数
failure rate
instantaneous failure rate
failure density function
