Real-Time Filter Method Based on the Structural Frequency of FAST Cabin-Cable System. (20th February 2014)

• Record Type: Journal Article
• Authors: Xu, Wenhua; Bao, Hong; Mi, Jianwei; Yang, Guigeng
• Other Names: Tang Xiaoqiang Academic Editor.
• Is Part Of: Advances in mechanical engineering. Volume 2014(2014)
• Publication Date: 2014-02-20
• Subjects: Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1155/2014/129302
• Languages: English
• ISSNs: 1687-8132

Abstract

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