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Proceedings Paper

Design and analysis of active vibration damper for telescope by linear motor
Author(s): FuJia Du; Zhiyong Zhang; Hao Li; Penghui Li
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Paper Abstract

The imaging quality and resolution of telescopes are deeply affected by the vibration that caused by electromechanical system and wind shake. Normally, vibration is caused by insufficient damping of the structure. In this paper, an active damper system based on linear motor is proposed to suppress vibration. The model of the whole control system is established at the beginning of this paper. LQR (Linear Quadratic Regulator) algorithm is proposed and the simulation is performed based on actual parameters of system. The results show that the system has a higher stability with higher Q value. The dynamic characteristics of the structure was obtained by analyzing the modal test data from accelerators. The experiments have been carried out to test the performance of the system. The results indicated that the active vibration damper can reduce the structure vibration 93.8% at 5.5Hz and increase the stiffness of structure.

Paper Details

Date Published: 10 July 2018
PDF: 7 pages
Proc. SPIE 10706, Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III, 107062R (10 July 2018); doi: 10.1117/12.2303542
Show Author Affiliations
FuJia Du, National Astronomical Observatories, Nanjing Institute of Astronomical Optics & Technology (China)
Zhiyong Zhang, National Astronomical Observatories, Nanjing Institute of Astronomical Optics & Technology (China)
Hao Li, National Astronomical Observatories, Nanjing Institute of Astronomical Optics & Technology (China)
Univ. of Chinese Academy of Sciences (China)
Penghui Li, National Astronomical Observatories, Nanjing Institute of Astronomical Optics & Technology (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 10706:
Advances in Optical and Mechanical Technologies for Telescopes and Instrumentation III
Ramón Navarro; Roland Geyl, Editor(s)

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