Real-Time Filter Method Based on the Structural Frequency of FAST Cabin-Cable System | Zendy

Xu Wenhua | Zendy; Bao Hong | Zendy; Mi Jianwei | Zendy; Yang Guigeng | Zendy

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Real-Time Filter Method Based on the Structural Frequency of FAST Cabin-Cable System

Author(s) -

Xu Wenhua,

Bao Hong,

Mi Jianwei,

Yang Guigeng

Publication year - 2014

Publication title -

advances in mechanical engineering

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.318

H-Index - 40

ISSN - 1687-8132

DOI - 10.1155/2014/129302

Subject(s) - filter (signal processing) , low pass filter , digital filter , acoustics , aperture (computer memory) , computer science , flexibility (engineering) , radio telescope , electronic engineering , engineering , physics , electrical engineering , mathematics , statistics , astronomy

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 5 m model show that calculating the fundamental frequency is accurate and the filter is effective.

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