Note: An approach to measurement of low frequency oscillation amplitude of discharge current of in-orbit Hall thruster

Liang Han; Yongjie Ding; Liqiu Wei; Daren Yu

doi:10.1063/1.4885446

Note: An approach to measurement of low frequency oscillation amplitude of discharge current of in-orbit Hall thruster

Rev Sci Instrum. 2014 Jun;85(6):066113. doi: 10.1063/1.4885446.

Authors

Liang Han¹, Yongjie Ding¹, Liqiu Wei¹, Daren Yu¹

Affiliation

¹ Harbin Institute of Technology, Mail Box 3047, Harbin, People's Republic of China.

PMID: 24985877
DOI: 10.1063/1.4885446

Abstract

This paper provides a method to measure the amplitude of low frequency oscillation under the on-track working condition, and realizes the sampling by means of adding the circuit design of sampling, low pass filtering by 3 dB at 48.2 kHz, detection and integrating in the filtering unit. The experimental results prove that the measuring device of merely 0.8 g can quantitatively reflect the amplitude of low frequency oscillation in Hall thruster and the maximum deviation of experiment data and theory data is 10% FS.