Attitude nonlinear predictive control of an under actuated spacecraft

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Navabi M.; Zarei P.

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Journal Paper

Paper Information

Journal: Journal of Space Science and Technology Year:2021 | Volume:14 | Issue:4 (پیاپی 49) Page(s): 77-83

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Information Journal Paper

Title

Attitude nonlinear predictive control of an under actuated spacecraft

Author(s)

Navabi M. | Zarei P. | Issue Writer Certificate

Keywords

Control of Spacecraft

Nonlinear predictive controller

Reaction wheels

Operator defect

Sub-stimulation system

Abstract

The use of four Reaction wheels to control the three-axis attitude of the spacecraft, considering its mechanical performance and the possibility of its failure, is a practical solution in the face of a defect in one of the wheels. In this article, the optimal control of the spacecraft, which has four Reaction wheels, is investigated. Controlling the attitude of a spacecraft with just two Reaction wheels is a significant issue that conventional controllers are not able to do. Therefore, the use of nonlinear model-based predictive controller is used to control the attitude of this spacecraft and compared with optimal nonlinear control in a discrete-time comparison, which satisfies the acceptable results.

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