TY - GEN
T1 - Optimization control based on hierarchical coordination for a space-based telescope
AU - Guo, Baiwei
AU - Liu, Zaozhen
PY - 2008
Y1 - 2008
N2 - 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.
AB - 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.
KW - Hierarchical coordination
KW - Optimization control
KW - Space-based telescope
KW - Wave-front correction
UR - http://www.scopus.com/inward/record.url?scp=41149140457&partnerID=8YFLogxK
U2 - 10.1117/12.791133
DO - 10.1117/12.791133
M3 - Conference contribution
AN - SCOPUS:41149140457
SN - 9780819467669
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - International Symposium on Photoelectronic Detection and Imaging 2007
T2 - International Symposium on Photoelectronic Detection and Imaging, ISPDI 2007: Optoelectronic System Design, Manufacturing, and Testings
Y2 - 9 September 2007 through 12 September 2007
ER -