This paper considers the fixed-time translational operation control issue for the spacecraft rendezvous task with a free-tumbling target. The translation dynamics model of the rendezvous mission under actuator misalignments is first established in the line-of-sight coordinate frame. Then, a novel time-varying sliding mode surface is constructed and a control scheme with the sliding manifold is proposed to achieve the fixed-time convergence of relative parameters’ tracking errors. It is interesting that the preceding convergence time can be altered explicitly according to the specific rendezvous requirements. Meanwhile, a modified updating strategy is developed to ensure system's fixed-time convergence property in the presence of lumped uncertainties (external disturbance and actuator misalignments). The associated stability proof is constructive and accomplished by the development of a Lyapunov function candidate. Finally, numerical simulations on rendezvous missions are performed to demonstrate the effectiveness and the superiorities of the designed fixed-time control scheme.
Fixed-Time Maneuver Control of Spacecraft Autonomous Rendezvous With a Free-Tumbling Target
IEEE Transactions on Aerospace and Electronic Systems ; 55 , 2 ; 562-577
2019-04-01
3734206 byte
Article (Journal)
Electronic Resource
English
Trajectory Control of Rendezvous with Maneuver Target Spacecraft
British Library Conference Proceedings | 2012
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