Share Email Print
cover

Proceedings Paper

Micro-vibration test of a reaction wheel after the mechanical test and transferring property through a shafting
Format Member Price Non-Member Price
PDF $17.00 $21.00

Paper Abstract

The spacecraft micro-vibration restricts the smoothness of satellite-born pointing assembles, especially for space-based laser communication, it may cause more capacity loss. A precision shafting is often the key component, connecting the satellite and the optical antenna, and transferring micro-vibration from the satellite bus to the above payload. The oscillation characteristics of the Reaction Wheel(RW) subjected to mechanical tests was implemented via pairs of liner accelerometers and acquisition system, then the micro-vibration transfer property through shafting were studied. The results showed that the RW vibration standard deviation (STD) magnified about 5 times to 30mg~50mg in time domain after the mechanical test, the FFT analysis in frequency domain showed the vibration response frequency was spurious, but the main frequency of about 430Hz and 860Hz which matched the frequency multiplication of the frequency the RW bearing balls passing the point defects in the bearing inner part. The liner acceleration and angular velocity was almost direct ratio to the RW speed, and the RW tangential vibration seemed to be more sensitive to the speed. The space used precision shafting showed perfect attenuation for a high frequency angular vibration transferring, the attenuation ratio was about 70%.

Paper Details

Date Published: 10 May 2019
PDF: 6 pages
Proc. SPIE 11068, Second Symposium on Novel Technology of X-Ray Imaging, 110680G (10 May 2019); doi: 10.1117/12.2523186
Show Author Affiliations
Kai Cui, Xi'an Institute of Optics and Precision Mechanics (China)
Wenji She, Xi'an Institute of Optics and Precision Mechanics (China)
Xiong Gao, Xi'an Institute of Optics and Precision Mechanics (China)
Zhiguo Li, Xi'an Institute of Optics and Precision Mechanics (China)
Zhiqi Zheng, Xi'an Institute of Optics and Precision Mechanics (China)
Huan Wang, Xi'an Institute of Optics and Precision Mechanics (China)


Published in SPIE Proceedings Vol. 11068:
Second Symposium on Novel Technology of X-Ray Imaging
Yangchao Tian; Tiqiao Xiao; Peng Liu, Editor(s)

© SPIE. Terms of Use
Back to Top
PREMIUM CONTENT
Sign in to read the full article
Create a free SPIE account to get access to
premium articles and original research
Forgot your username?
close_icon_gray