| 单模式LIPS-200离子推力器的寿命及可靠性定量评估 |
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| 引用本文： | 张雪儿,张天平,李得天. 单模式LIPS-200离子推力器的寿命及可靠性定量评估[J]. 宇航学报, 2022, 43(2): 214-220. DOI: 10.3873/j.issn.1000-1328.2022.02.010 |
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| 作者姓名： | 张雪儿 张天平 李得天 |
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| 作者单位： | 1. 兰州空间技术物理研究所, 兰州 730000; 2. 真空技术与物理重点实验室, 兰州 730000; 3. 甘肃省空间电推进技术重点实验室，兰州 73000 |
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| 基金项目： | 甘肃省科技计划基金资助项目(18JR3RA412)； |
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| 摘 要： | 针对离子推力器产品工作寿命及可靠性定量评估的难题,结合单工作模式LIPS-200离子推力器产品成熟度提升需求,通过寿命主要影响因素耦合分析,应用试验数据、数值模型和数理统计方法,提出了单工作模式离子推力器寿命及可靠性定量评估的可行技术途径:通过分析模型、验证试验和数值模型之间的不断迭代实现各失效模式对应磨损模型的精细化...
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| 关 键 词： | 离子推力器 定量评估 可靠性 寿命 威布尔分布 |
| 收稿时间： | 2021-06-03 |
Quantitative Evaluation on Lifetime and Reliability of a Single mode Ion Thruster LIPS 200 |
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| ZHANG Xue er,ZHANG Tian ping,LI De tian. Quantitative Evaluation on Lifetime and Reliability of a Single mode Ion Thruster LIPS 200[J]. Journal of Astronautics, 2022, 43(2): 214-220. DOI: 10.3873/j.issn.1000-1328.2022.02.010 |
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| Authors: | ZHANG Xue er ZHANG Tian ping LI De tian |
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| Affiliation: | 1. Lanzhou Institute of Physics, Lanzhou 730000, China; 2. Science and Technology on Vacuum Technology and Physics Laboratory, Lanzhou 730000, China; 3. Key Laboratory of Space Electric Propulsion Technology of Gansu Province, Lanzhou 730000, China |
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| Abstract: | To improve the readiness level of a single mode ion thruster LIPS 200, an approach to quantify the lifetime and reliability of ion thrusters is proposed. This approach involves coupling analysis of the factors of lifetime, numerical models verified by test data, and statistical methods. The wear models corresponding to the main failure modes of the thruster are refined through iteration of analysis, test, and numerical models. By applying test data and sample test to the refined wear model, accurate Weibull distribution parameters are obtained for the thruster lifetime. Thruster lifetime and reliability for certain missions can be quantified with 3 parameter Weibull model of lifetime for each failure mode. |
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| Keywords: | Ion thruster Quantitative evaluation Reliability Lifetime Weibull distribution |
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