摘要
针对大型挠性航天器指向跟踪控制问题,提出一种期望姿态估计方法和基于反步法的姿态跟踪控制方法。首先采用平方根容积卡尔曼滤波进行相对轨道估计,利用相对位置估计信息解算出追踪航天器观测轴指向目标航天器的期望姿态。然后基于修正Rodrigues参数描述的误差姿态动力学方程设计了姿态控制器,考虑系统惯量的不确定性设计了自适应控制律。最后将该方法应用到某空间观测任务中,仿真结果表明了方法的有效性。
The problem of pointing tracking control of large flexible spacecrafis is investigated in the paper. An estimation method of desired attitude and an attitude control method based on the backstepping technique are developed. A method for relative orbit determination based on root -square cubature Kalman fiter is proposed. The desired attitude of the chaser satellite to align its observation axis to the target is calculated with the estimated position and velocity. An adaptive backstepping attitude controller is synthesized for the chaser satellite with unknown inertia matrix, which is based on the chaser attitude error dynamic model represented by modified Rodrigues parameters (MRP). The simulation results show the effectiveness and feasibility of the proposed method during the application to sapce observation.
出处
《航天控制》
CSCD
北大核心
2017年第1期54-59,共6页
Aerospace Control
作者简介
徐广德(1990-),男,山东菏泽人,博士研究生,主要研究方向为航天器动力学与控制;
闫鑫(1984-),男,河南周口人,博士,工程师,主要研究方向为导航、制导与控制;
苟仲秋(1980-),男,河南孟州人,博士,高级工程师,主要研究方向为航天器总体设计;
张柏楠(1962-),男,黑龙江齐齐哈尔人,硕士,研究员,主要研究方向为航天器总体设计。