空间引力波探测微牛电推进寿命评估研究现状

阐述了空间引力波探测任务中无拖曳控制技术对推进系统的特殊要求，介绍了目前主要的备选推进类型：冷气推进、离子电推进、会切型霍尔电推进、胶体电推进。针对面向空间引力波探测任务的电推进系统的寿命评估工作进行了任务分析，报告了目前微牛级电推进系统寿命试验研究现状，举例说明了目前主要应用的电推进装置寿命预测方式，包括半经验模型预测、数值模拟预测、基于数据驱动的预测以及系统层面的可靠性评估方法。对目前微牛级电推进系统的寿命评估研究现状进行总结，给出了发展思路。

Newton electric propulsion system for space gravitational wave detection

To meet the special requirements for drag-free control technology in space gravitational wave detection task, main alternative propulsion types are introduced, such as cold gas thruster, ion thruster, multistage cusped magnetic field Hall thruster and colloid thruster. Life assessment of electric propulsion system for space gravitational wave detection task is analyzed, and current research status of life tests for electric propulsion system at micro-Newton level is reported. Examples are given to illustrate the main life prediction methods of electric propulsion devices, including semi-empirical model prediction, numerical simulation prediction, data-driven prediction and reliability evaluation methods at system level. With the summary of the research status on life assessment of the micro-Newton electric propulsion system, development ideas are proposed.