The application of linear actuators for telescope pointing controlA study team at MSFC has conceptually designed two lunar-based telescopes, a 16 m aperture Large Lunar Telescope (LLT) and a 4 m Cluster Telescope Experiment (CTE). The CTE serves as a technology tested for the LLT. The CTE utilizes a hexapod telescope mount to obtain a small gimbal angle that significantly extends the viewing space and observation time from that of a stationary transit telescope. This paper addresses the applicability of six linear actuators to provide limited gimbal rotation of the CTE telescope assembly. Kinematic constraint equations for the hexapod mount have been applied to a six degree-of-freedom rigid body model. Static equilibrium equations have been solved to address configuration design issues, and a feedback tracking control system has been designed and simulated.
Document ID
19920060662
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Carrington, C. K. (NASA Marshall Space Flight Center Huntsville, AL, United States)
Davis, B. G. (NASA Marshall Space Flight Center Huntsville, AL, United States)