A simulation of the instrument pointing system for the Astro-1 mission

Details A simulation of the instrument pointing system for the Astro-1 mission A simulation of the instrument pointing system for the Astro-1 mission

Jul 1991

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1991stin...9130061w&link_type=abstract

Unknown

Computer Science

Performance

Astro Missions (Sts), Computer Programs, Control Simulation, Pointing Control Systems, Nonlinearity, Performance Prediction, Perturbation, Slewing, Stars, Systems Simulation, Ultraviolet Astronomy

Scientific paper

NASA has recently completed a shuttle-borne stellar ultraviolet astronomy mission known as Astro-1. A three axis instrument pointing system (IPS) was employed to accurately point the science instruments. In order to analyze the pointing control system and verify pointing performance, a simulation of the IPS was developed using the multibody dynamics software TREETOPS. The TREETOPS IPS simulation is capable of accurately modeling the multibody IPS system undergoing large angle, nonlinear motion. The simulation is documented and example cases are presented demonstrating disturbance rejection, fine pointing operations, and multiple target pointing and slewing of the IPS.

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