针对航天器编队的姿轨协同控制问题,提出一种使用循环追踪策略的六自由度(6-DOF)协同控制方法。首先,结合Lagrangian形式的姿态动力学和轨道动力学方程,建立航天器编队的六自由度相对运动模型;然后,以线性双积分系统的循环追踪算法为基础,分别设计可跟踪动态目标的循环追踪算法和航天器匹配自然周期相对运动的循环追踪算法。综合上述两种算法,设计航天器编队六自由度协同控制的循环追踪算法。该算法可实现航天器编队空间圆构型初始化,跟踪动态的期望姿态和相对运动。仿真结果证明了所提出的航天器编队六自由度协同控制的循环追踪算法的有效性。
A 6 degree of freedom( 6-DOF) attitude and orbit coordinated control method using cyclic pursuit is proposed for spacecraft formation flying. Firstly,a decentralized coordinated tracking cyclic pursuit algorithm is developed based on the linear second-order cyclic pursuit control algorithm. Then,a cyclic pursuit algorithm which can match the natural period configuration of satellites is improved based on a similarity transformation to the rotation matrix. Next,a proposed 6-DOF coordinated control method which uses cyclic pursuit algorithm is applied to both orbital and attitude dynamics formulated as the integrated Lagrangian equations. The three dimentional circular formation composed of multiple spacecraft can be realized by the proposed algorithm and the attitude of an arbitrary number of spacecraft can be synchronized to the constant reference states simultaneously. Numerical simulation results demonstrate the efficiency of the proposed algorithm.