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《Mathematics in Practice and Theory》 2015-16
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Optimization of Lunar Soft Landing Trajectory Based on GA-SQP Method

WANG Ai-ping;MA Hong-juan;YANG Shi-ning;LI Ning;Institute of Information Engineering,Huanghe Science and Technology College;  
The Lunar soft landing problem is one of the key technologies of the moon exploration process.We propose a way of lunar soft landing trajectory optimization algorithm based on the direct collocation method and GA-SQP method.By establishing lunar soft landing dynamics model and the normalize process,using the direct collocation method the lunar soft landing problem is converted into a nonlinear programming problem and which is solved by SQP method.Considering the SQP method is sensitive to the initial value,the convergence radius is small and easy to fall into local extreme value,a method of providing the iterative initial value for SQP method by using GA is proposed,which can improve the stability of the algorithm.Also we provide the corresponding simulation results.
【Fund】: 河南省基础与前沿项目(122300410229);; 河南教育厅科技攻关计划项目(14B110024);; 郑州市科技局重点研究项目(20141374)
【CateGory Index】: V525
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