航天器快速绕飞姿控脉宽调制研究  

Research on Pulse Width Modulation for Spacecraft Fast Circumnavigation Attitude Control

作　　者：张兵[1] 王东亚[1] 王珂[1] 王冠军[1] 

机构地区：[1]北京跟踪与通信技术研究所,北京100094

出　　处：《飞行器测控学报》2012年第5期15-19,共5页Journal of Spacecraft TT&C Technology

摘　　要：针对航天器快速绕飞姿态控制和脉宽调制,提出了脉宽调制指令算法,结合航天器转动惯量、期望状态、控制力矩等进行了姿态控制可行性分析。基于误差四元数的姿态滑模控制,结合不同的控制力矩和脉宽调制档次,采用姿态角误差分析了脉宽调制、控制力矩、姿控精度的关系。通过数值仿真,验证了脉宽调制控制指令的有效性和姿态控制应用的可行性。A PWM （Pulse Width Modulation） command algorithm is proposed for fast spacecraft circumnavigation attitude control and pulse width modulation. A feasibility analysis is given for attitude control taking into account factors including rotation inertia, desired states and control torque. Error quaternion-based sliding mode control is implemented from different levels of torque and PWM. The relationship between PWM, control torque and attitude control precision is illustrated through attitude angle errors. Numerical simulation verifies the validity of the algo-rithm and its feasibility for attitude control.

关 键 词：快速绕飞 脉宽调制 误差四元数 滑模控制 

分 类 号：V488[航空宇航科学技术]