在轨智能自主运行的高精度变推力离子电推进技术方案

Technical Project of Ion Propulsion with High-Precision Variable Thrust and Intelligent Autonomous Operation on Orbit

航天器任务能力水平的提升和智能自主技术的发展与先进推进系统密不可分。未来,随着智能化技术的普遍应用,航天器对地面管控的依赖将越来越低。针对高精度变推力离子电推进在未来智能化超低轨高分辨率遥感卫星、无拖曳飞行科学探测卫星、超稳超静卫星平台、高精度卫星星座等高级任务目标上的应用,在分析当前离子电推进在轨运行方式和电、气精细可调可控、天地差异和寿命后期性能衰退等特点的基础上,提出了发展高精度变推力智能自主离子电推进的思路和技术方案,识别出了基于高精度快速数据采集技术的智能自主推力控制算法、故障自主诊断处理、性能退化检测和参数重构等关键技术,初步构建了智能自主运行的电推进系统构架,以期最终实现离子电推进流程优化、高精度、长寿命和智能自主运行的综合目标。

The improvement of spacecraft mission capability and the development of intelligent autonomous technology are inseparable from the support of advanced propulsion system.In the future,with the widespread application of intelligent technology,spacecraft will rely less and less on ground control.In view of the application of high-precision variable thrust ion electric propulsion on the future advanced mission targets such as intelligent super low earth orbit high-resolution remote sensing satellites,drag free flight science satellites,ultra-stable and ultra-static satellites platform and high-precision satellites constellation,etc,this paper analysis current operation mode in orbit and the characteristics of ion electric propulsion such as fine adjustable and controllable electricity and gas flow,the difference between heaven and earth,and the performance decline in the late life,and puts forward the idea and technical scheme of developing intelligent autonomous ion electric propulsion with high precision and variable thrust.The key technologies are identified such as high precision autonomous ratio control small flow technology,intelligent autonomous thrust control algorithm based on high precision and fast data acquisition technology,fault autonomous diagnosis and processing,performance degradation detection and parameters reconstruction.The framework of intelligent autonomous operation electric propulsion system is preliminarily constructed,in order to finally achieve comprehensive goals of the future ion electric propulsion precess optimization,high precision,long life and intelligent autonomous operation.