Design of a Control System of Compensation for the Focal Displacement of Feed of a 50m Antenna

LI Zhe; ZHANG Hong-bo; KONG De-qing; FU Qiang; GENG Jing-chao; ZHANG Yu-feng

Astronomical Research and Technology > 2009 > 6(4): 271-275.

LI Zhe, ZHANG Hong-bo, KONG De-qing, FU Qiang, GENG Jing-chao, ZHANG Yu-feng. Design of a Control System of Compensation for the Focal Displacement of Feed of a 50m Antenna[J]. Astronomical Research and Technology, 2009, 6(4): 271-275.

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Design of a Control System of Compensation for the Focal Displacement of Feed of a 50m Antenna

1.
National Astronomical Observatories, Chinese Academy of Sciences, Beijing 100012, China
2.
Graduate University of the Chinese Academy of Sciences, Beijing 100049, China
3.
The 54th Research Institute of the China Electronics Technology Group Corporation, Shijiazhuang 050081, China
4.
Institute of Tracking and Telecommunication Technology of Beijing, Beijing 100094, China

More Information

Received Date: February 19, 2009
Revised Date: May 04, 2009
Published Date: October 14, 2009

Graphical Abstract

Abstract

Abstract

This paper fits curves of axial displacement of focal point of an X-band feed at different elevations angles for the 50m antenna in the Miyun District of Beijing.The displacements are due to gravitational deformations of the antenna.In order to compensate the axial displacement, this paper designs a feed control system including a current loop, a speed loop, and a position loop.Simulations of the system are carried out based on the Matlab/Simulink software.The results show that the system can compensate the axial displacement of focal point and has satisfactory performance under dynamic or static condition.
- gravitational deformation,
- axial displacement of focal point,
- servo system

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References (8)

References

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