Computer Science
Scientific paper
Jun 2000
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2000spie.4014..392z&link_type=abstract
Proc. SPIE Vol. 4014, p. 392-398, Airborne Telescope Systems, Ramsey K. Melugin; Hans-Peter Roeser; Eds.
Computer Science
Scientific paper
The SOFIA telescope chopping secondary mirror is mounted on a Focus Centering Mechanism. This system is a novel type of parallel manipulator (hexapod) made of six linear actuators which provide active alignment and focus of the chopper unit with respect to the top ring frame. We describe the development of the compact high-precision linear actuator used for this hexapod mechanism. The paper reports the test results measured on the actuator prototype proving its submicron position accuracy capability as well as its high stiffness and force. The prototype was designed to be largely representative of the flight unit ones currently in the construction phase.
Gallieni Daniele
Schwab Philippe
Zago Lorenzo
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