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航天器与非合作目标进行交会对接时,要求控制器能保证二者不发生碰撞.然而,针对航天器非合作交会对接中的避碰问题,还没有成熟的控制策略.本文以服务航天器体坐标系为参考坐标系建立航天器相对姿态轨道耦合运动模型,利用滑模控制设计了一种姿态轨道耦合控制器实现交会对接.通过利用人工势函数理论和基于蔓叶线的虚拟障碍物模型,控制器可以严格地保证服务航天器运行在安全区域内部,避免与目标航天器碰撞.通过李雅普诺夫理论可以证明系统在控制器的作用下是渐近稳定的.数值仿真进一步说明了所提出的控制器的有效性.
Spacecraft and non-cooperation target rendezvous and docking requirements of the controller can ensure that the collision between the two.However, there is no mature control strategy for collision avoidance in non-cooperative rendezvous and docking of spacecraft.In this paper, Coordinate coordinate system is used to establish the orbit coupling motion model of the relative attitude of the spacecraft, and an attitude and rail coupling controller is designed by sliding mode control to achieve rendezvous and docking.By using the artificial potential function theory and the model of virtual obstacle based on the masonry, The controller can strictly ensure the service spacecraft to operate inside the safe area and avoid collision with the target spacecraft.The Lyapunov theory can be used to prove that the system is asymptotically stable under the action of the controller.The numerical simulation further illustrates the proposed proposed The effectiveness of the controller.