Abstract
This paper describes the attitude control of a small gravity gradient and reaction wheel stabilised satellite. Gravity gradient stabilised satellite have limited stability and pointing capabilities. Thus, H ∞ control has been applied, in order to improve the accuracy of the attitude control. The synthesis of a suitable H ∞ controller, using a composite weighting function is described. The trade-off between reaction wheel torque and possible disturbance rejection capability using H ∞ control is discussed. Also, the promising results using H ∞ control with antireset windup compensation are presented.
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