Saspayeva A.D. Жилисбаева К.С.
Inverse attitude control of a flexible satellite
Reporter: Saspayeva A.D.
To meet ever more demanding mission requirements, the spacecraft attitude should be controlled with high accuracy. In order to achieve the precise attitude control, a variety of attitude disturbance sources should be taken into account, specifically flexible structures such as solar panels and antennas. This paper presents an adaptive backstepping method for flexible spacecraft attitude stabilization control and active vibration suppression. Then this controller is proposed for use in situations when there are only magnetic actuators. In addition, for the actuator is shown to be instantaneously underactuated, and is only controllable in the time-varying sense.
The basis of this method is the Lyapunov stability criterion. The method consists in the sequential approach of each system integrator, by adding negative feedback. After it, we will get control law for the original object. When you create a control system in such a way before the developer gets the task of choosing the Lyapunov function and choice of the coefficients obtained regulator. Backstepping gives a significant advantage in the synthesis of control because it does not require linearization. The proposed controller guarantees the system to be asymptotically stable and provides high accuracy control, external disturbance rejection, and robustness to flexible vibrations.
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