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Indexed by:会议论文

Date of Publication:2018-01-01

Included Journals:CPCI-S

Volume:165

Page Number:1435-1450

Abstract:Low-thrust transfer trajectories optimization has been considered a challenging optimal problem in the past decades, especially for multi-revolution cases. In this paper, a high-precision and efficient algorithm of low-thrust multi-revolution transfer optimization is developed. The optimal orbital transfer problem is posed as a constrained nonlinear optimal control problem. With the help of quasilinearization techniques, the nonlinear optimal control problem is converted to a series of constraint linear-quadratic optimal control problems. Then, based on the parametric variational principle and complementary conditions, the converted problem is transformed into a standard linear complementary problem which can be solved easily. The modified equinoctial elements are chosen to describe the motion of spacecraft for its convenience of expressing the phase propagation as well as non-singularity. A nominal trajectory is given to accelerate the convergence process of the optimal control problem. Numerical examples show that the proposed method possesses high accuracy and efficiency.