| 引用本文: | 宫二玲,谢红卫,李鹏波,等.指数寿命可靠性增长评估中增长因子的确定方法.[J].国防科技大学学报,2008,30(6):53-56,62.[点击复制] |
| GONG Erling,XIE Hongwei,LI Pengbo,et al.Determination of Growth Factor in Reliability Growth Evaluation with Exponential Life[J].Journal of National University of Defense Technology,2008,30(6):53-56,62[点击复制] |
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| 指数寿命可靠性增长评估中增长因子的确定方法 |
| 宫二玲, 谢红卫, 李鹏波, 蒋英杰 |
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(国防科技大学 机电工程与自动化学院，湖南 长沙 410073)
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| 摘要: |
| 对于延缓纠正模式的可靠性增长试验，阶段内产品的寿命服从失效率为常数的指数分布，而阶段间的可靠性有阶跃增长，通常考虑以增长因子进行阶段间的信息传递，增长因子的确定成为关键。首先分析常用的ML-Ⅱ确定方法的局限性，提出改进的ML-Ⅱ方法，并对阶段末的可靠性作出Bayes评估。最后仿真示例表明了改进方法的有效性。 |
| 关键词: 可靠性增长 延缓纠正模式 增长因子 ML-Ⅱ方法 Bayes评估 |
| DOI： |
| 投稿日期：2008-06-08 |
| 基金项目:国家部委基金重点项目；教育部博士点基金资助项目(20059998007) |
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| Determination of Growth Factor in Reliability Growth Evaluation with Exponential Life |
| GONG Erling, XIE Hongwei, LI Pengbo, JIANG Yingjie |
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(College of Mechatronics Engineering and Automation, National Univ. of Defense Technology, Changsha 410073, China)
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| Abstract: |
| For the reliability growth tests with delayed-fix mode, the life in a stage can be assumed to follow the exponential distribution with a constant failure rate. However the reliability between stages has a growth. Usually, growth factor was used for the information transfer between stages. Thus the determination of growth factor becomes very important. The limitation of ML-Ⅱmethod commonly used is analyzed and a modified ML-Ⅱmethod is given. Then Bayesian evaluation method of reliability is deduced. At last, the example shows the feasibility of the modified ML-Ⅱmethod. |
| Keywords: reliability growth delayed-fix mode growth factor ML-Ⅱ method Bayesian evaluation |
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