Open AccessAcquisition and Analysis Technology of Pyroshock Response on Spacecraft
Author(s) -
G. C. Feng,
Guang Yang,
Jiang Yang,
Gongbo Ma,
Rui Wang,
Chuang Liu
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1877/1/012023
Subject(s) - ringing , accelerometer , transient (computer programming) , spacecraft , acoustics , vibration , acceleration , signal (programming language) , amplitude , piezoelectricity , computer science , physics , engineering , electrical engineering , aerospace engineering , optics , filter (signal processing) , classical mechanics , programming language , operating system
Wide frequency range and high acceleration amplitude are two typical characteristics of transient vibration in the environment of pyroshock on spacecraft. The Piezoelectric accelerometer is widely accepted as the best available transducer for the absolute measurement of vibration. “Ringing” and “Zero Drift” are very easily to occur if the accelerometer is being used to measure transient vibrations outside its useful frequency range. This paper introduced the working principle of piezoelectric accelerometer, The scheme of reducing “Ringing” phenomenon was given, The mechanism of “Zero Drift” phenomenon was analysed. The methods to restrain the “Zero Drift” were discussed from the aspects of the selection of test equipment, the installation of piezoelectric accelerometer and the setting of data acquisition parameters. Finally, the wavelet analysis method was used to decompose and reconstruct the distortion data caused by “Zero Drift”, and the effective pyroshock response signal was extracted.