摘要
研究滑翔弹道优化设计问题。采用考虑地球转速和扁率的动力学模型进行了弹道优化设计。根据滑翔弹道的特点提出了优化设计的方法。针对滑翔弹道优化设计中的强非线性、多约束、多种类性能指标、多局部极值的问题,采用了粒子群全局优化与经典局部优化相结合的算法,并通过仿真计算验证了算法的适用性。针对典型的工程问题,对滑翔弹道进行了优化,设计结果对工程实践具有一定的指导意义。
This paper considers the spacecraft gliding trajectory optimization design. A mathematical model, including the Earth rotate rate and J2 disturbance, is used for the optimization design. According to the characteristics of the spacecraft gliding trajectory, a method of optimization is developed. Considering the nonlinearity, various restrictions, various cost functionals and many partial extremes, the particle swarm optimization is utilized as a global optimization algorithm. Numerical simulations confirm the applicability of the presented algorithm. Considering practical applications, some typical spacecraft gliding trajectory are optimized. The discussion of the numerical simulations gives some valuable opinions in practical applications.
出处
《宇航学报》
EI
CAS
CSCD
北大核心
2009年第3期858-862,共5页
Journal of Astronautics
关键词
飞行器
滑翔弹道
全局优化
粒子群算法
Spacecraft
Gliding trajectory
Global optimization
Particle swarm optimization
