Preset performance control method for libration point orbit rendezvous without initial error symbols

Abstract

The invention relates to a preset performance control method for libration point orbit rendezvous without initial error symbols. The method comprises the steps of establishing a relative dynamic modelof a nonlinear libration point orbit, establishing a disturbance and uncertainty model and designing a three-order integral chain differentiator and a libration point orbit rendezvous preset performance control rule. The preset performance control method based on the three-order integral chain differentiator can ensure that the state of a rendezvous tail end system meets an actual preset performance requirement under the condition that disturbance and relative navigation errors exist and a thruster has a fault, that is to say, the safe and accurate rendezvous of a tracing spacecraft and a target spacecraft can be achieved, and a feasible control strategy is provided for future libration point orbit rendezvous tasks.

Description

technical field [0001] The invention belongs to the technical field of autonomous rendezvous of deep-space spacecraft, and relates to an autonomous control method for orbital rendezvous of a translation point based on a third-order integral chain differentiator with missing velocity information and unknown initial error sign of a controller. Background technique [0002] In recent years, with the deepening of research on the dynamic properties of translation points, translation point orbits have shown great application prospects. Countries around the world have launched and are planning multiple translation point observation platforms and manned space stations. The cost of these large spacecraft is high, and it will be too expensive to abandon them directly if they fail. Therefore, it is necessary to study the rendezvous and docking of the translation point orbiting spacecraft It is crucial for the interception, repair and rescue of spacecraft near the orbit of the translati...

AI Technical Summary

Problems solved by technology

[0007] Aiming at the problem that the speed measurement sensor fails to provide speed measurement information in the orbital intersection of the translation point, and the preset performance control method needs to predict the cumbersome operation of the initial error sign, a new method that only requires relative position information and the initial error sign is unknown Translation point orbit proximity rendezvous control law, used to realize high-precision real-time control of the rendezvous mission between the tracking spacecraft and the target spacecraft

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