scholarly journals Adaptive Tracking Control for Spacecraft Formation Flying System via Modified Fast Integral Terminal Sliding Mode Surface

IEEE Access ◽  
2020 ◽  
Vol 8 ◽  
pp. 198357-198367
Author(s):  
Xiaohan Lin ◽  
Xiaoping Shi ◽  
Shilun Li
Keyword(s):  
Tracking Control ◽  
Formation Flying ◽  
Sliding Mode ◽  
Terminal Sliding Mode ◽  
Adaptive Tracking Control ◽  
Adaptive Tracking ◽  
Spacecraft Formation ◽  
Spacecraft Formation Flying

scholarly journals Nonsingular Fast Terminal Adaptive Neuro-sliding Mode Control for Spacecraft Formation Flying Systems

Complexity ◽  
2020 ◽  
Vol 2020 ◽  
pp. 1-15 ◽  
Author(s):  
Xiaohan Lin ◽  
Xiaoping Shi ◽  
Shilun Li ◽  
Sing Kiong Nguang ◽  
Liruo Zhang
Keyword(s):  
Sliding Mode Control ◽  
Formation Flying ◽  
Sliding Mode ◽  
Control Law ◽  
Tracking Errors ◽  
Terminal Sliding Mode ◽  
Control Laws ◽  
Spacecraft Formation ◽  
Mode Control ◽  
Spacecraft Formation Flying

In this paper, a nonsingular fast terminal adaptive neurosliding mode control for spacecraft formation flying systems is investigated. First, a supertwisting disturbance observer is employed to estimate external disturbances in the system. Second, a fast nonsingular terminal sliding mode control law is proposed to guarantee the tracking errors of the spacecraft formation converge to zero in finite time. Third, for the unknown parts in the spacecraft formation flying dynamics, we proposed an adaptive neurosliding mode control law to compensate them. The proposed sliding mode control laws not only achieve the formation but also alleviate the effect of the chattering. Finally, simulations are used to demonstrate the effectiveness of the proposed control laws.

Distributed attitude consensus tracking control for spacecraft formation flying via adaptive nonsingular fast terminal sliding mode control

2021 ◽  
pp. 095441002110422
Author(s):  
Xiong Xie ◽  
Tao Sheng ◽  
Liang He ◽  
Zhijun Chen ◽  
Yong Zhao
Keyword(s):  
Tracking Control ◽  
Sliding Mode ◽  
Control Law ◽  
Model Uncertainties ◽  
External Disturbances ◽  
Terminal Sliding Mode ◽  
Spacecraft Formation ◽  
Spacecraft Formation Flying ◽  
Consensus Tracking ◽  
Fast Terminal Sliding Mode

This article investigates the distributed attitude consensus tracking control for spacecraft formation flying with unknown external disturbances and model uncertainties. First, a terminal sliding mode disturbance observer (TSMDO) is constructed to estimate the generalized disturbances including external disturbances and model uncertainties. The finite-time convergence of the estimation errors using TSMDO is analyzed. Second, a variable structure control law is developed to avoid introducing initial errors of the TSMDO. Third, a novel adaptive nonsingular fast terminal sliding mode (ANFTSM) control law based on TSMDO is proposed to ensure the convergence of attitude tracking errors to zero. Based on theoretical analysis, the finite-time stability can be guaranteed by Lyapunov theory. Finally, the effectiveness of the developed control law is verified via numerical simulations.

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