We consider attitude control of a rigid body (e.g., small satellite) with internal rotating-mass actuators that, unlike reaction wheels, cannot perform complete rotations. Instead, these actuators are limited to γ radians of total rotation. We present and analyze attitude-feedback control algorithms for this system, where the controls are continuous but only piecewise-continuously differentiable sinusoids, that is, signals that are continuous and piecewise sinusoidal but whose derivatives contain discontinuities. The main analytic results show these attitude-feedback controls achieve asymptotic setpoint tracking for a constant attitude command and approximate command following for a time-varying attitude command. We also demonstrate the setpoint tracking algorithm in simulation. Finally, we present single-axis closed-loop attitude control experiments for a small-satellite system on a three-dimensional air bearing.
|Title of host publication||2020 American Control Conference, ACC 2020|
|Number of pages||6|
|State||Published - Jul 2020|
|Event||2020 American Control Conference, ACC 2020 - Denver, United States|
Duration: Jul 1 2020 → Jul 3 2020
|Name||Proceedings of the American Control Conference|
|Conference||2020 American Control Conference, ACC 2020|
|Period||7/1/20 → 7/3/20|
Bibliographical noteFunding Information:
This work is supported in part by the National Aeronautics and Space Administration (80NSSC17M0040) and the National Science Foundation (CMMI-1538782).
© 2020 AACC.
ASJC Scopus subject areas
- Electrical and Electronic Engineering