Author ORCID Identifier
Date Available
8-10-2023
Year of Publication
2022
Degree Name
Master of Science in Mechanical Engineering (MSME)
Document Type
Master's Thesis
College
Engineering
Department/School/Program
Mechanical Engineering
First Advisor
Dr. Jesse B. Hoagg
Second Advisor
Dr. T. Michael Seigler
Abstract
In this work, we design, build, and test two 1.25U CubeSats. These small satellites were deployed on the International Space Station to perform attitude control experiments in microgravity. These CubeSats use an oscillating-mass actuation system for attitude control as opposed to traditional flywheels. Each CubeSat uses 3 pairs of servomotors to oscillate masses about 3 orthogonal axes. The servomotors have strict rotational stroke limits. Thus, they cannot spin continually. To oscillate each pair of masses, the angle of each servomotor is commanded using signals that are continuous and piecewise sinusoidal with amplitudes that do not violate the servomotor stroke constraints. We present the open-loop and closed-loop attitude control results from experiments in microgravity onboard the International Space Station. The open-loop results demonstrate that this oscillating-mass actuation system can be used for attitude manipulation in microgravity. The closed-loop results demonstrate successful setpoint tracking.
Digital Object Identifier (DOI)
https://doi.org/10.13023/etd.2022.328
Recommended Citation
Lush, K. Ryan, "Small-Satellite Attitude Control Using Sinusoidal Actuator Motion: Experiments on the International Space Station" (2022). Theses and Dissertations--Mechanical Engineering. 200.
https://uknowledge.uky.edu/me_etds/200
Included in
Acoustics, Dynamics, and Controls Commons, Computer-Aided Engineering and Design Commons, Electro-Mechanical Systems Commons
