Perturbation indicator for Hall effect thruster operating state based on statistical characteristics of breathing oscillation time scale signals

被引：0

作者：

Li, Jingjing ^{[1
,2
]}

Wei, Liqiu ^{[1
,2
]}

Hu, Yanlin ^{[3
]}

Lian, Huibin ^{[1
,2
]}

Zhou, Liwei ^{[1
,2
]}

Liu, Xingyu ^{[1
,2
]}

Ji, Tianyuan ^{[1
,2
]}

Han, Liang ^{[3
]}

He, Yongfeng ^{[1
,2
]}

Li, Hong ^{[1
,2
]}

Ding, Yongjie ^{[1
,2
]}

机构：

[1] Harbin Inst Technol, Sch Energy Sci & Engn, Harbin 150001, Heilongjiang, Peoples R China

[2] Minist Ind & Informat Technol, Key Lab Aerosp Plasma Prop, Harbin 150001, Heilongjiang, Peoples R China

[3] China Aerosp Sci & Technol Corp, Beijing Inst Control Engn, Beijing 100089, Peoples R China

来源：

ADVANCES IN SPACE RESEARCH | 2023年 / 72卷 / 09期

基金：

中国国家自然科学基金;

关键词：

Hall effect thruster; Breathing oscillation; Statistical property; Dwell time; Perturbation indicator; INTERFEROMETRY;

D O I：

10.1016/j.asr.2023.07.001

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

The failure of Hall effect thruster (HET) is usually the result of the accumulation of several tiny abnormal disturbances during oper-ation. Timely and accurate early warning of perturbations is an important guarantee for the normal operation of thrusters. In this study, when the perturbation rate of HET signal (anode voltage or anode flow rate) is -4% to 4%, the time scale signal of breathing oscillation (BO) in the frequency range of 10 kHz to 100 kHz is statistically analyzed. Experiments show that when the signal is perturbed, the bal-ance between ionization and acceleration of plasma in the discharge channel is destroyed, resulting in the dwell time of the wave peaks and valleys of BO in the far-zero region with the perturbation law, which visually shows that the number of scattered points at the cor-responding current value changes regularly. According to the above statistical characteristics, this paper proposes a new condition mon-itoring index, namely the number of scattered points in the wave peaks side of the far-zero point area, and designs a perturbation indicator for the operating condition of the HET. Compared with direct monitoring of discharge current in engineering, this indicator can amplify the influence of the perturbation signal on BO, and has better identification and accuracy. Meanwhile, the indicator does not use invasive measurement and complex equipment, and is promising to be applied to the monitoring and diagnosis of the perturbation operation state of the on-orbit thruster. (c) 2023 COSPAR. Published by Elsevier B.V. All rights reserved.

引用

页码：3595 / 3605

页数：11