Title :
Nonlinear Adaptive Control for Low Earth Orbit Formation Flying
Author :
Dong Xiaoguang ; Cao Xibin ; Zhang Jinxiu ; Shi Li
Author_Institution :
Res. Center of Spacecraft Technol., Harbin Inst. of Technol., Harbin, China
Abstract :
This paper considers the tracking control problem of LEO formations subjected to unknown disturbances consisting of J2 and air drag. The full nonlinear relative dynamics of the follower with respect to the leader are used to develop an adaptive control law to account for unknown disturbances. The disturbance estimation is derived using a Lyapunov-based method. The combination of the disturbance estimation, the feedback Linearization and the LQR controller ensures the global asymptotic stability of the closed-loop system. Simulation results are presented to illustrate the efficiency of the adaptive control law.
Keywords :
Lyapunov methods; adaptive control; asymptotic stability; closed loop systems; feedback; nonlinear control systems; position control; space vehicles; J2; LEO formations; LQR controller; Lyapunov based method; air drag; closed loop system; feedback linearization; global asymptotic stability; low earth orbit formation flying; nonlinear adaptive control; nonlinear relative dynamics; tracking control problem; Adaptive control; Equations; Estimation; Mathematical model; Orbits; Simulation; Space vehicles; Adaptive Control; Disturbance Estimation; Feedback Linearization; Formatoin Flying; Low Earth Orbit;
Conference_Titel :
Digital Manufacturing and Automation (ICDMA), 2011 Second International Conference on
Conference_Location :
Zhangjiajie, Hunan
Print_ISBN :
978-1-4577-0755-1
Electronic_ISBN :
978-0-7695-4455-7
DOI :
10.1109/ICDMA.2011.190
