Highlight A robust Coulomb feedback control scheme for Charged-Spacecraft Formation Flying is proposed. The robust optimal sliding mode control applied to Coulomb formation deployment is studied. The robust controller architecture is based on LQR and SMC scheme. Closed-loop stability is obtained by using the Lyapunov second direct method.
Abstract Inter-spacecraft electrostatic force (Coulomb force) is desirable for close formation flying control because of its propellant-less and free contaminate characteristics attributed to the propellant exhaust emission. This paper presents robust optimal sliding mode control to deal with the problem of thruster saturation in tracking the formation trajectory for Coulomb spacecraft formation flying. The robust controller design is based on optimal control theory as a linear quadratic system, and it is augmented with an integral sliding mode control technique. The stability of the closed-loop system is guaranteed using the second Lyapunov method. The developed controller outperforms the existing ones, because it has a higher degree of fine-tuning to cope with the uncertainty. Numerical simulations are employed to confirm the efficiency of the developed controller.
Robust optimal sliding mode control for the deployment of Coulomb spacecraft formation flying
Advances in Space Research ; 71 , 1 ; 439-455
2022-08-31
17 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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