微型氙气供给模块性能研究及在轨应用

Performance Research and On-Orbit Application of Micro Xenon Feeding Module

关键词:  霍尔电推进系统  微型氙气供给模块  Bang-Bang控制  仿真分析  在轨应用

Key words:  Hall electric propulsion system  Micro xenon feeding module  Bang-Bang control  Simulation analysis  On-orbit application

摘要:

传统氙气供给系统由于系统复杂、重量体积大、价格昂贵、生产周期长等劣势，已无法适应低轨互联网卫星星座对低功率霍尔电推进系统的轻质化、低成本及快速研制的发展要求。本文提出一种基于复杂流体通道先进成型和微型化流体控制部件相结合的Bang-Bang控制型微型氙气供给模块，对其结构组成和工作原理进行了介绍。基于Matlab与AMESim联合仿真方式搭建了其系统动态仿真模型，并采用Peng-Robinson方程考虑了氙气的超临界特性，对其Bang-Bang压力控制特性进行仿真研究。对微型氙气供给模块与600W霍尔推力器的在轨数据进行了分析，产品在轨工作稳定，在轨数据与仿真结果相吻合。

Abstract:

Due to the disadvantages of complex system， large weight and volume， high price， and long production cycle， the traditional xenon feeding system has been unable to meet the development requirements of low-power Hall electric propulsion system for low-orbit Internet satellite constellation， such as light weight， low cost and rapid development. A Bang-Bang micro xenon feeding module based on complex fluid channels forming method and miniaturized fluid control components is proposed， and its structural composition and working principle are introduced. Based on the co-simulation method of Matlab and AMESim， the system dynamic simulation model is established where the supercritical characteristics of xenon gas are considered by the Peng-Robinson equation. And the Bang-Bang pressure control characteristics are simulated. The on-orbit data of the micro xenon feeding module and the 600W Hall thruster are analyzed， and the product works stably on-orbit， and the on-orbit data match well with the simulation results.