Adaptive Fixed-Time Terminal Sliding Mode Control on SE(3) for Coupled Spacecraft Tracking Maneuver

Adaptive Fixed-Time Terminal Sliding Mode Control on SE(3) for Coupled Spacecraft Tracking Maneuver

Blog Article

In this paper, a reaching law-based adaptive fixed-time terminal sliding mode control law, which is used for coupled spacecraft tracking vive night splint maneuver in the presence of large inertia parametric uncertainties and external disturbances, is proposed.The coupled 6-DOF kinematics and dynamics for spacecraft motion are modeled on Lie group SE(3).The relative configuration is expressed by a local coordinate (exponential coordinate) of SE(3).In order to estimate the inertia parameters and external disturbances, we mozelle riesling also propose a novel adaptive update law, which can make the control law be applied without the inertia parameters of the spacecraft a priori.Fixed-time convergence property of the closed-loop feedback system is proved in the framework of Lyapunov.

Numerical simulations are performed to demonstrate the performances of the proposed control scheme for coupled spacecraft tracking maneuver.