Cosine transition acceleration path method for satellite attitude tracking maneuver

Abstract

The invention provides a cosine transition acceleration path method for satellite attitude tracking maneuver. Off-centered half periodic cosine function transition is employed at a mutation position of angular acceleration of a BCB path; according to the angular acceleration path, predetermined maneuvering direction vector is projected to the satellite system three shafts; integration is conducted to obtain an angular velocity path; and then kinematics is utilized for calculation of attitude angle or attitude quaternion route. Compared with the prior art, the vibration of flexible attachment can be reduced greatly to improve the stability and rapidity, and realize good flexibility inhibitory effect. The design method is simple, easy for engineering implement, and suitable for satellite attitude maneuver with large flexible coupling.

Description

[0001] technical field [0002] The invention relates to satellite attitude control technology, especially trajectory planning of satellite attitude tracking maneuver, a method using cosine transition acceleration path. Background technique [0003] In order to increase the satellite imaging width, realize real-time observation of emergency areas, or realize stereoscopic imaging through the front and rear views of satellites along the trajectory direction, strict requirements are put forward for the rapid maneuverability of satellites. The methods of satellite attitude maneuvering are divided into open-loop maneuvering and closed-loop maneuvering. Open-loop maneuvers have higher requirements on the certainty of the model, and are generally only used for single-axis maneuvers; closed-loop maneuvers can be divided into step command mode and path planning mode. The step command mode often has overshoot, while the path planning mode can avoid it. Overshoot, and the maneuvering ...

AI Technical Summary

Problems solved by technology

There is a certain flexibility suppression effect, but because the maximum output torque of the actuator is not reasonably used, the planned path time is longer, and the differential of angular acceleration of some segments is relatively large, which needs further improvement

[0009] The problems of the above-mentioned paths are: BCB path planning is simple, but no consideration is given to flexible suppression; S-shaped path considers flexible suppression, but its form is complex, which is not easy to implement in engineering; parabolic acceleration path has made flexible suppression Considered, but at the expense of planning time

Images