Satellite Control Using the Earth’s Magnetic Field

Abstract

Control of satellite pointing direction is essential to all modern satellites. Whether the satellites purpose is research, surveillance, or for public use, on-board antenna’s must constantly be communicating with ground stations. I have designed and simulated a satellite control system that operates using strictly torque coils as the system of control. Torque coils consist of copper wiring wound many times and a current running through the wires to generate a magnetic field. The magnetic field generated by the copper wires will tend to align itself with the Earth’s magnetic field. Although torque coils can be very limiting and very slow this type of design will save money, and weight. Additionally, torque coils can be controlled by electricity so the satellite does not have to carry any fuel. My research explores the different stages of control required for an entire orbital mission.