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Proceedings Paper

Numerical simulation investigations of the dynamic control process and frequency response characteristics in an adaptive optics system
Author(s): Hai-Xing Yan; Shu-Shan Li; She Chen
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Paper Abstract

The dynamic control process in an adaptive optics (AO) system is the third important factor to affect the performances of the AO system. A numerical simulation of the dynamic control process in an AO system is carried out for the first time to complete a comprehensive numerical simulation of an AO system. By means of the numerical simulation the long-exposure Strehl ratio and other useful metrics for evaluating the performances of an AO system can be obtained. In comparison to the theoretical analyses of automatic control theory, a numerical simulation of the dynamic control process in an AO system is advantageous. The frequency response characteristics are closely related to the dynamic control performance of an AO system. The bandwidth, phase margin and gain margin which are very important parameters for experimenters can be obtained conveniently from a numerical simulation of the frequency response characteristics. A numerical simulation of the frequency response characteristics in an AO system is presented in this paper for the first time. The numerical simulation results agree with the experimental data excellently. The simulation computational results of frequency response by using composite input of multiple frequencies compare to the single-frequency simulation results very well and can be used to determine the practical parameters of bandwidth and margins. The performances of an AO system can be effectively investigated by means of a combination of a numerical simulation of frequency response characteristics with that of the dynamic control process.

Paper Details

Date Published: 4 February 2002
PDF: 11 pages
Proc. SPIE 4494, Adaptive Optics Systems and Technology II, (4 February 2002); doi: 10.1117/12.454788
Show Author Affiliations
Hai-Xing Yan, Institute of Mechanics (China)
Shu-Shan Li, Institute of Mechanics (China)
She Chen, Institute of Mechanics (China)


Published in SPIE Proceedings Vol. 4494:
Adaptive Optics Systems and Technology II
Robert K. Tyson; Domenico Bonaccini; Michael C. Roggemann, Editor(s)

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