NASA NTRS · 19920072670
A Zero-Gyro safemode controller for HST
Abstract
The purpose of this paper is to document the Zero-Gyro Sunpoint mode for Hubble Space Telescope, a safemode designed to ensure a power positive state without the use of rate gyros. This paper presents an overview of the Zero-Gyro Sunpoint algorithm, followed by details of the algorithm, control system design, and simulation results. A new, related safemode test, the System Momentum Test, is also discussed.
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Markley, F. L., Nelson, John D.. 1992-01-01. A Zero-Gyro safemode controller for HST. https://ntrs.nasa.gov/citations/19920072670
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