Spatial non-cooperation target autonomous visual line rendezvous no-model preset performance control method

Abstract

The invention discloses a spatial non-cooperation target autonomous visual line rendezvous no-model preset performance control method, and the method comprises the following steps: 1), building a non-cooperation target autonomous visual line rendezvous relative orbit motion model in a visual line coordinate system; 2), defining a relative orbit control state quantity, and converting the relative orbit motion model into an affine form; 3), taking the exponential convergence speed, overshoot and steady-state error boundary as the constraints, and building a preset performance boundary function; 4), designing a relative orbit no-model preset performance controller; 5), designing a relative posture no-model preset performance controller. The method achieves the autonomous rendezvous control of a non-cooperation target with spinning and unknown maneuver. The method can achieve the high-precision and high-robustness autonomous rendezvous control of the non-cooperation target without the specific parameters of the model, and is higher in theoretical significance and engineering application value. In addition, the method greatly improves the safety of a rendezvous task of the non-cooperation target.

Description

technical field [0001] The invention belongs to the field of aerospace non-cooperative target control, and relates to a robust control technology for autonomous rendezvous, in particular to a model-free preset performance control method for autonomous line-of-sight rendezvous of space non-cooperative targets. Background technique [0002] On-orbit service and maintenance of space targets or space facilities is an important development direction in the aerospace field in the future. Autonomous space rendezvous is the premise of on-orbit service to the target, and it is also a research hotspot in the field of space technology. [0003] The approach and tracking technology for cooperative targets has been relatively mature, and many countries, including China, have successfully carried out on-orbit experimental verification [1-3]. With the continuous development of space technology, on-orbit service tasks for space non-cooperative targets have attracted the attention of schola...

AI Technical Summary

Problems solved by technology

However, in actual working conditions, due to the lack of cooperative measurement marks of non-cooperative targets, there is great uncertainty in the measurement results; when the tracking spacecraft undergoes multiple orbit changes and approaches non-cooperative targets, its mass and inertia matrix are also affected by Fuel consumption and liquid sloshing have certain changes; non-cooperative targets may also have maneuvers that are difficult to measure (such as irregular rolls, escape behavior, etc.)

Therefore, the control method proposed based on the accurate model is difficult to obtain ideal results in actual working conditions.

In addition, the θ-D method and model predictive control method based on nonlinear optimal control have high computational complexity, which is difficult to meet the needs of online control

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