摘要
研究了基于最优交会轨迹的空间自主交会跟踪控制问题。根据应变能最小原则选取空间三次最优几何Hermite曲线作为交会参考轨迹,该参考轨迹在时间固定、端点及相应切矢量给定条件下应变能最小,且构造简单,光滑性好。针对空间交会模型的强耦合非线特性采用机器人控制中常用的计算力矩法设计参考轨迹跟踪控制器,实现了固定时间最优自主交会。仿真结果表明本文提出的交会策略速度增量小,计算复杂度低。
An optimal tracking control using optimal geometric Hermite curve and computed torque tech-niques for the full nonlinear dynamics is derived to control a desired spacecraft autonomous rendezvous with low fuel consumption in fixed-time. The reference trajectory selected is smooth and easy to construct and has the minimal strain energy under given endpoints and endpoint tangent vectors condition. Numerical simulations demonstrate the control law performance of small velocity increment and low time complexity.
出处
《航天控制》
CSCD
北大核心
2011年第6期28-33,共6页
Aerospace Control
关键词
最优交会轨迹
跟踪控制
计算力矩法
自主交会
Optimal rendezvous trajectory
Tracking control
Computed torque method
Autonomous rendezvous
