| 液体火箭发动机试验流量测量系统可靠性评定 |
| Reliability Evaluation of Flow Measurement System for Liquid Rocket Engine Test |
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| 中文摘要: |
| 针对液体发动机可靠性评定的研究现状，从性能可靠性和结构可靠性两个维度对流量测量系统的可靠性进行评定。给出了测量系统性能可靠性的定义，将测量数据视为正态分布，通过区间估计的方法计算单侧可靠性置信下限。给出了测量系统结构可靠性的定义。根据流量测量系统串联可靠性框图，对将指数寿命失效型试验信息转换为二项成败型试验信息。采用L-M法(Lindstrom-Maddens)，结合查表和线性插值法求解结构可靠性置信下限。该测量系统可靠性评估方法对行业内测量技术人员具有重要的参考意义。 |
| 英文摘要: |
| According to the research status of reliability evaluation of liquid engine, the reliability of flow measurement system is evaluated from two dimensions of performance reliability and structure reliability. The definition of performance reliability of measurement system is given. The measurement data are regarded as normal distribution, and the confidence limit of one-sided reliability is calculated by interval estimation. The definition of structural reliability of measurement system is given. According to the series reliability diagram of flow measurement system, the exponential life failure test information is transformed into binomial success or failure test information. The L-M (Lindstrom-Maddens) combined with look-up table and linear interpolation method is used to solve the lower confidence limit of structural reliability. The reliability evaluation method of measurement system has important reference significance for measurement technicians in the industry. |
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| 中文关键词: 液体火箭发动机试验 流量测量系统 性能可靠性 结构可靠性 L-M法 |
| 英文关键词:Liquid rocket engine test flow measurement system performance reliability structural reliability L-M method |
| 基金项目: |
| DOI：10.11823/j.issn.1674-5795.2021.05.12 |
| 引用本文：杨懿，郭亚男，王永鹏，贾志杰，陈文丽，吕守国，吉喆.液体火箭发动机试验流量测量系统可靠性评定[J].计测技术,2021,(5):. |
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