A Wide Dynamic Range Switching Current Regulator for Cost Efficient Magnetic Attitude Control of Nanosatellites
Haken, Carl
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https://hdl.handle.net/2142/90379
Description
Title
A Wide Dynamic Range Switching Current Regulator for Cost Efficient Magnetic Attitude Control of Nanosatellites
Author(s)
Haken, Carl
Contributor(s)
Swenson, Gary R.
Issue Date
2016-05
Keyword(s)
CubeSats
Attitude control
Magnetorquer
Current regulator
Analog feedback
Abstract
CubeSats are an increasingly popular platform for performing scientific research in
space at a low cost. Traditional propulsive or reaction wheel based attitude control systems are
complex, expensive, and require a large percentage of the nanosatellite’s volume. In this project,
a low cost, low volume magnetic attitude control actuator is presented for CubeSats. The overall
design is explored, with a focus on the switch mode wide dynamic range current
regulator, which is built using discrete components. Results are presented, including efficiencies
in excess of 95%, current set point error of less than 1%, fast and damped step responses, and
output voltage ripple below 50 mV peak-to-peak. The cost and volume of the controller
compare favorably to available commercial magnetic attitude controllers.
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