助推-滑翔飞行器助推段最优轨迹快速生成方法

摘要

Rapid and fully autonomous trajectory-planning and parameters generation of boost phase of boost-glide vehicle is very important for engineering.Aiming at this problem,a practical robust method of fast optimal-trajectory-generation of boost phase was proposed.The indirect method was adopted to construct a double iterative algorithm by using semi-analytical expressions of boost-phase optimal-trajectory without process constraints,and atmospheric influence was introduced gradually with homotopy density.The direct method was adopted to get of boost-phase optimal-trajectory with process constraints by using boost-phase optimal-trajectory without process constraints as initial value.Numerical simulation for the proposed method was carried out.Simulation results demonstrate that the method is reasonable and feasible,and a boost-phase optimal-trajectory satisfying constraints can be generated within 3 min by the method.%助推-滑翔飞行器助推段轨迹快速和全自主的规划和参数生成具有重要的工程意义.针对此问题,给出了一种可实用的、鲁棒性强的助推段最优轨迹快速生成方法.利用间接法,结合无过程约束下助推段最优轨迹的半解析表达式,构造了一种双重迭代算法,采用密度同伦的方法逐渐引入大气的影响,获得无过程约束下助推段最优轨迹,而后将该值作为初值,再采用直接法进行求解,最终获得有过程约束下助推段最优轨迹.对该方法进行了仿真验证,仿真结果表明,给出的方法合理可行,能在3 min内获得一条满足约束的助推段最优轨迹.