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Attitude-tracking control for momentum-wheel-driven satellites with external disturbances using sliding-mode approach

The satellite is supposed to move in a circular orbit around the Earth and always require energy for its activities. Therefore, the solar panels need to orient towards the Sun as long as possible to receive the most energy. In the first step, a dynamics model of a satellite disposed by three momentum wheels whose angular speeds controlled by corresponding motors is developed. | Attitude-tracking control for momentum-wheel-driven satellites with external disturbances using sliding-mode approach