预警卫星前馈复合控制研究

预警卫星在轨工作期间,星载扫描相机将对关注区域进行南北往复扫描,凝视相机对发现的目标进行跟踪探测。文章以美国天基红外系统为背景,研究了相机扫描运动对星体产生干扰力矩作用下的姿态稳定控制问题,在星体反馈控制基础上增加了相机扰动的前馈补偿控制。针对扰动力矩大于执行机构最大输出力矩的问题,基于动量矩守恒定律,设计了用于补偿相机扰动力矩的前馈控制器,实现了卫星姿态的反馈控制加前馈补偿的复合控制方法。仿真结果表明该方法能够较有效地抑制相机运动引起的姿态扰动。

Study on Feed-forward Compound Control for Early-warning Satellite

The scanning camera scans the concerning area and the staring camera tracks the found targets, when the early-warning satellite is on-orbit. The article, which is based on SBIRS, discusses the attitude control of satellite under the disturbance due to the movement of two cameras.In considering the movement of two cameras, a feed-forward compensation is added to the control system .To solve the problem that disturbance torque is larger than the maximum output control torque, the feed-forward controller is de...