气动力矩和重力梯度矩实现微小卫星三轴姿态控制

Microsatellite Passivity Attitude Control Using Aerodynamic Torque and Gravity Gradient

提出运用低轨道两个主要环境力矩 (重力梯度矩和气动力矩 )实现微小卫星三轴姿态被动控制方案。重力梯度矩提供俯仰和滚转恢复力矩 ,气动力矩提供偏航和俯仰恢复力矩 ;通过姿态稳定性分析和姿控过程动态仿真 ,结果表明此卫星具有结构简单、姿态稳定精度高的优点。

A scheme of three axis passivity stabilization realized by using two main environmental torque (aerodynamic torque and gravity gradient) for low orbit microsat is presented.Restore torque for pitch and roll orientation is provided by gravity gradient. Restore torque for yaw and pitch orientation is provided by aerodynamic torque.The attitude stability analyses are presented and the simulations are also provided.The result shows that the satellite has simple structure and excellent control precision.