Adaptive super-twisting control for deployment of space-tethered system with unknown boundary disturbances. (October 2022)

• Record Type: Journal Article
• Authors: Dong, Zhe; Zhang, Lei; Li, Aijun; Wang, Changqing; Shi, QingSheng
• Is Part Of: Proceedings of the Institution of Mechanical Engineers. Volume 236:Number 13(2022)
• Page Start: 2739
• Page End: 2750
• Publication Date: 2022-10
• Subjects: Space-tethered system -- tether deployment -- tension control -- adaptive super-twisting control -- disturbances with unknown boundaries; Aeronautics -- Periodicals; Astronautics -- Periodicals; Airplanes -- Design and construction -- Periodicals; Aerospace industries -- Periodicals; 629.1
• DOI: 10.1177/09544100211068909
• Languages: English
• ISSNs: 0954-4100

Abstract

This paper proposes an adaptive super-twisting control (ASTC) for the deployment of space-tethered systems with the consideration of uncertainty of external and internal disturbances with unknown boundaries. The main advantage of the ASTC scheme is that it can deal with the unknown bounds of uncertainties and disturbances. The proposed control law consists of two adaptive control gains that ensure the establishment, in a finite time, of a real second-order sliding mode. This, in turn, guarantees a convergence to a small domain and without overestimating the control gains. The stability of the control law is demonstrated theoretically. Compared with the sliding mode control algorithm with power reaching law, the newly proposed adaptive super-twisting control method performs better in the settling time, the maximum in-plane angle, and angular velocity control and suppressing oscillations. Numerical simulations are presented to validate the effectiveness and robustness of the proposed ASTC scheme.