分布式嵌套霍尔电推进设计与容错控制

Distributed Nested Hall Electric Propulsion Design and Fault-Tolerant Control

空间电推进相比于传统化学推进,具有运行时间长、高比冲、小推力且功率比冲均可调节等优势。首先基于霍尔效应推进器基本工作原理引出嵌套式霍尔电推进概念,并设计出一个额定推力为2N的双通道嵌套式霍尔推力器,再对其各项性能参数如阳极比冲、放电电压、放电电流、阳极质量流率、功率等进行设计计算。最后,提出了一种基于滑模控制的容错控制方法,用于分布式嵌套霍尔电推进控制系统,并对其进行仿真分析。

Compared with traditional chemical propulsion,Space Electric Propulsion has the advantages of long running time,high specific impulse,small thrust as well as adjustable power and specific impulse.In this paper,the concept of Nested Hall Electric Propulsion is introduced based on the basic working principle of Hall Effect Thruster,a dual-channel nested Hall thruster with rated thrust of 2N is designed,and then the performance parameters such as anode specific impulse,discharge voltage,discharge current,anode mass flow rate and power are designed and calculated accordingly.Finally,a fault-tolerant control method based on sliding mode control is proposed for distributed nested Hall electric propulsion control system,and its simulation analysis is carried out.