Computer Science
Scientific paper
Sep 1994
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1994spie.2361..102r&link_type=abstract
Proc. SPIE Vol. 2361, p. 102-108, Second European Conference on Smart Structures and Materials, Alaster McDonach; Peter T. Gardi
Computer Science
Scientific paper
The majority of wavefront disturbances of space reflector and space telescopes are due to external thermal fields variations and the optical surface deformations. Two principal methods of disturbances compensation exist: a thermostabilization by temperature gradients decreasing and the mirror surface active thermodeformation. This can be accomplished only by some thermal methods: either by temperature gradients elimination or by keeping some given temperature field. The latter method is carried out by a system of heaters and sensors located on mirror elements /1,2/. Thermal deformation correction of distortions of optical and structural elements surface is possible, too, in accordance with control system responses. A thermo-optical compensation system (TOCS) consists of individual control units which contain heaters and sensors fixed to respective mirror elements as well as electronic measurement and control units (MCU) interfaced to them Fig. 1. The MCU are made constructively of unified printed circuit boards which can be functionally divided into various zones for interfacing of input/output, memory and supply circuits.
Kulagina V.
Leonov Yury
Lutinskaya Marina
Reznichenko Vladimir V.
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