磁控小卫星周期时变的比例微分控制设计方法

Periodically Time Varying PD Controller Design for Small Satellite with Magnetic Control System

在极地圆轨道上工作的对地定向磁控小卫星， 其动力学方程是一个线性周期系统。根据极地轨道地磁场变化的特性， 利用卫星的姿态角和姿态角速率作为反馈信号， 提出了一种采用磁力矩器的比例微分（ＰＤ）控制规律设计方法。用这种新方法设计的ＰＤ控制器其增益是周期时变的，

The magnetic control system for polar orbiting,nadir pointing small satellite is studied in this paper.It is shown that the dynamics with magnetic control system is a linear periodic system.Taking into account properties of the geomagnetic field,a new PD magnetic control law using the feedback information of attitude angle and attitude rate is developed.The PD controller has periodically time varying gains to ensure the control system for required transient and steady performance.