Optimization control based on hierarchical coordination for a space-based telescope

Baiwei Guo; Zaozhen Liu

doi:10.1117/12.791133

12 March 2008 Optimization control based on hierarchical coordination for a space-based telescope

Baiwei Guo, Zaozhen Liu

Proceedings Volume 6624, International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing; 66241F (2008) https://doi.org/10.1117/12.791133
Event: International Symposium on Photoelectronic Detection and Imaging: Technology and Applications 2007, 2007, Beijing, China

Abstract

The performance of a space-based telescope with a segmented primary mirror is seriously decreased due to thermal deformation of its optical components, deployment procedure, and manufacturing procedure. To achieve diffraction-limited imagery, the telescope usually has multiple wave-front correctors, such as deformable primary mirror segments and a MEMS mirror. A control archtecuture of hierarchical coordination is established for such a space-based telescope in this papar. The initial wave-front errors are decomposed by wavelet transformation, then low- frequency errors are corrected by the primary mirror segment, and high-frequency errors are corrected by the MEMS mirror. A simple coordination control method and an optimization control method are applied to diliver the wave-front errors to the two corrctors. The simulation results show the optimization control can result in better correction effect.

Citation Download Citation

Baiwei Guo and Zaozhen Liu "Optimization control based on hierarchical coordination for a space-based telescope", Proc. SPIE 6624, International Symposium on Photoelectronic Detection and Imaging 2007: Optoelectronic System Design, Manufacturing, and Testing, 66241F (12 March 2008); https://doi.org/10.1117/12.791133

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