面向空间非合作目标附着的制导控制律设计

摘要

In order to achieve the goal of attaching the surface of the non-cooperative target while relative velocity is zero,the following research has been done.Firstly,the fuel optimal trajectory of the task is programmed.The first order necessary conditions of the optimal dynamic model of active vehicle are derived and indirect method is used for solving the optimal fuel adhesion problem with multiple constraints.Then,a " zero distance and zero velocity" adhesion control method is proposed with sliding mode control to track the fuel optimal trajectory.This method combining the advantages of fuel optimal control and sliding mode control is a kind of approximate optimal feedback control method.Simulation example shows that this method can effectively overcome the initial error and model error,and achieve approximate fuel optimal.This method has certain feasibility and engineering application value.%以实现对空间非合作目标表面附着的同时保证与其相对速度为0(“零距零速”附着)为目标,首先规划了附着任务的燃料最优轨迹,推导了主动飞行器动力学模型中的最优性一阶必要条件,用间接法求解多约束下的燃料最优附着问题.然后,提出了用滑模变结构控制追踪燃料最优轨迹的“零距零速”附着控制方法,结合了燃料最优控制和滑模控制的优点,是一种近似燃料最优的反馈控制方法.仿真算例表明,该方法可有效克服初始误差和建模误差,同时实现近似燃料最优,具有一定的可行性和工程应用价值.