摘要
针对慢旋非合作目标,利用滑模控制和人工势函数理论设计两种快速绕飞避碰控制器以实现安全快速绕飞.通过考虑非合作卫星的几何形状,建立椭球避碰区域模型,解决了球形避碰区域无法实现的快速绕飞避碰问题.基于完全的非线性相对运动方程,分别针对系统外界扰动上界已知和未知的情形设计避免碰撞的快速绕飞控制器,所设计的控制器均可以严格地保证快速绕飞的安全性.利用Lyapunov理论证明了系统的渐近稳定性,并通过数值仿真验证了所设计控制器的有效性.
For slowly rotating non-cooperative target, two fast fly-around collision avoidance controllers are designed based on the theory of sliding mode control and artificial potential function, which can realize safe fast fly-around. By considering the non-cooperative satellite geometry, the ellipsoid collision-avoidance-zone model is established, and fast fly-around collision avoidance is realized for the spherical collision-avoidance-zone. Based on the fully nonlinear relative motion equation, the fast fly-around collision avoidance controllers are designed respectively for systems with and without knowledge of external disturbances＇ upper bound, both of which can strictly guarantee the safety of fast fly-around. The asymptotic stability is proved by Lyapunov theory. The numerical simulation is performed to verify the effectiveness of the proposed controllers.
作者
李学辉
宋申民
LI Xue-hui;SONG Shen-min(Center for Control Theory and Guidance Technology,Harbin Institute of Technology,Harbin 150001,China)
出处
《控制与决策》
EI
CSCD
北大核心
2018年第9期1612-1618,共7页
Control and Decision
基金
国家自然基金项目(61174037
61333003
61021002)
关键词
快速绕飞
避免碰撞
人工势函数
滑模控制
渐近稳定
fast fly-around
collision avoidance
artificial potential function
sliding mode control
asymptotically stable
