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- Title
Real-Time Filter Method Based on the Structural Frequency of FAST Cabin-Cable System.
- Authors
Wenhua Xu; Hong Bao; Jianwei Mi; Guigeng Yang
- Abstract
Due to great flexibility, low damping, and variable structure in the cabin-cable system of five hundred meter Aperture Spherical Radio Telescope (FAST), a real-time digital low-pass filter based on the analysis of frequency is presented in this paper. Firstly, by the Lomb-Scargle theorem, it can obtain the fundamental frequency of cabin-cable system. Then, using the obtained frequency, a digital low-pass filter is designed to filter the measured data. After being filtered, the measured data are used for coarse control. Finally, the results of the experiments on the FAST 5m model show that calculating the fundamental frequency is accurate and the filter is effective.
- Subjects
FILTERS &; filtration; REAL-time control; APERTURE antennas; FLEXIBILITY (Mechanics); LOWPASS electric filters
- Publication
Advances in Mechanical Engineering (Sage Publications Inc.), 2014, p1
- ISSN
1687-8132
- Publication type
Article
- DOI
10.1155/2014/129302