Nonredundant Single-Gimbaled Control Moment Gyroscopes

Two objectives dominate consideration of control moment gyroscopes for spacecraft maneuvers: high torque (equivalently momentum) and singularity-free operations. This paper adds to the significant body of research toward these two goals using a minimal three-control-moment-gyroscope array to provide...

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Bibliographic Details
Published in:Journal of guidance, control, and dynamics control, and dynamics, 2012-03, Vol.35 (2), p.578-587
Main Authors: Sands, Timothy, Kim, Jae Jun, Agrawal, Brij N
Format: Article
Language:English
Subjects:
Angles (geometry)
Arrays
Attitude control
Control moment gyroscopes
Exact sciences and technology
Fundamental areas of phenomenology (including applications)
Inversions
Maneuvers
Mathematical analysis
Physics
Solid dynamics (ballistics, collision, multibody system, stabilization...)
Solid mechanics
Yaw
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Summary:Two objectives dominate consideration of control moment gyroscopes for spacecraft maneuvers: high torque (equivalently momentum) and singularity-free operations. This paper adds to the significant body of research toward these two goals using a minimal three-control-moment-gyroscope array to provide significant singularity-free momentum performance increase spherically (in all directions) by modification of control-moment-gyroscope skew angles, compared with the ubiquitous pyramid geometry skewed at 54.73 deg. Spherical 1H1H (one control moment gyroscope's worth momentum) singularity-free momentum is established with bidirectional 1H1H and 2H2H in the third direction in a baseline configuration. Next, momentum space reshaping is shown via mixed skew angles permitting orientation of maximum singularity-free angular momentum into the desired direction of maneuver (yaw in this study). Finally, a decoupled gimbal angle calculation technique is shown to avoid loss of attitude control associated with singular matrix inversion. This technique permits 3H3H (maximal) yaw maneuvers without loss of attitude control despite passing through singularity. These claims are demonstrated analytically, then heuristically, and finally validated experimentally. [PUBLISHER ABSTRACT]
ISSN:0731-5090
1533-3884
DOI:10.2514/1.53538