AbstractsEngineering

Magnetic control for spinning 3-unit science CubeSat

by Karl Joseph McDonald




Institution: University of Texas – Austin
Department: Aerospace Engineering
Degree: MSin Engineering
Year: 2015
Keywords: CubeSat; Magnetic; Control; Spin stabilized
Record ID: 2061148
Full text PDF: http://hdl.handle.net/2152/28245


Abstract

A control system is designed and validated for a 3-unit CubeSat science mission. Utilizing three magnetorquers and one reaction wheel the system achieves a 6 rotation per minute spin rate and orbit normal pointing vector of the long axis of a 3-unit CubeSat. The design is validated across an evolution of scenarios, from idealized to flight-like with expected bias and noise terms added in. Estimated mass imbalances and the limitations of the power system driving the magnetorquers force the final system design to use only magnetorquers. Considerations are also taken for the science instrument to limit the interference of magnetorquers. The overall satellite design and software implementation are also briefly discussed.