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Academy Transaction Note "Two-Stage Automatic Mass Balancing and Attitude Control for 3-DoF Spacecraft Attitude Simulators"

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DOI:

https://doi.org/10.31224/7342

Keywords:

3-DoF air-bearing simulator, spacecraft attitude simulator, automatic mass balancing, CR-CG offset estimation, batch least-squares estimation

Abstract

Two-stage automatic mass balancing is experimentally demonstrated on a hemispherical 3-DoF spacecraft attitude simulator. CRAMBO performs coarse offset reduction, while FRAMBO refines the dynamic-equivalent CR-CG estimate to approximately [0.08, 0.12, -27.62] μm. The final estimate is used for gravity-torque feedforward during a coupled three-axis hardware maneuver with sub-degree attitude tracking.

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Posted

2026-06-15 — Updated on 2026-08-21

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Copyright (c) 2026 Yong-Hwan Kim

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This work is licensed under a Creative Commons Attribution 4.0 International License.

Version justification

Updated to reflect substantial manuscript revisions, including a more concise technical-note format, streamlined methodology, and revised experimental results and discussion.