小推力转移轨道的快速优化设计  

Optimization design of low-thrust transfer trajectory

作　　者：刘柯邑 岳晓奎[1] 张莹[1] 

机构地区：[1]西北工业大学航天学院,陕西西安710072

出　　处：《电子设计工程》2013年第23期31-34,共4页Electronic Design Engineering

摘　　要：针对小推力探测器巡航段的轨迹优化问题,给出了一种基于高斯伪谱法的快速优化方法。首先对小推力转移轨道进行了优化建模,并对模型进行无量纲化处理,以提高优化算法求解精度。然后采用高斯伪谱配点策略将小推力轨道最优设计问题离散成多约束参数优化问题。最后,仿真计算及结果分析表明:高斯伪谱法可有效求解小推力轨道优化问题,具有对初值猜测不敏感、收敛速度快,精度高等优点。To obtain the optimal transfer trajectory of low thrust spacecraft, a fast gauss pseudospectral method was proposed. First, the non-dimensional optimization model of interplanetary low thrust trajectory was established to improve solution accuracy. Then the legendre pseudospeetral method based on legendre gauss quadrature nodes was used to translate the optimal control problem into a parameter optimization problem with multi-constrains. Taking the Mars and Venus missions as the examples, the proposed gauss pseudospectral approach was validated. Simulation results demonstrate that gauss pseudospeetral model is a promisin~ method for low thrust traie^tarv ant;m;~,~t;,~n

关 键 词：小推力 轨道优化 高斯伪谱法 星际转移 

分 类 号：TN919[电子电信—通信与信息系统]