Fast Attitude Trajectory Planning of Spacecraft Based on the Bezier Shape-Based Method

Kang Sun,Shuo Han,Fuliang Niu, Ruijiang Yu,Wencheng Ni,Yaobing Wang

2023 IEEE International Conference on Unmanned Systems (ICUS)（2023）

Beijing Institute of Spacecraft System Engineering

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Abstract

This paper proposed a fast attitude planning strategy for satellites using the Bezier shaped function. Based on this strategy, the spatial attitude route for a spacecraft equipped with space manipulator in a considerably short time can be achieved. Under the time optimization performance index, by optimizing finite unknown coefficients while satisfying boundary constraints and motion equations, this coefficient defines the shape of the Bezier curve used to approximate general state variables. To fully optimize the angular trajectory, the Bezier method's calculation results are used as initial values and subsequent calculations are carried out using the Gaussian Pseudospectral Method (GPM). Through the comparison of simulation, the calculation time for Bezier method is about 1.5% of the total for GPM. The attitude planning strategy is suitable for scenarios where specific movements need to be completed within a limited time frame during on-orbit service tasks.

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Key words

Attitude planning strategy,avoiding obstacles,Bezier shaped function,on orbit service

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