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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。
Aiming at the attitude control and pulse width modulation of spacecraft, a pulse width modulation (PWM) command algorithm is proposed, and the feasibility of attitude control is analyzed with the inertia, desired state and control torque of the spacecraft. Based on the error quaternion attitude sliding mode control and the different control torques and pulse width modulation grades, the relationship between pulse width modulation, control torque and attitude control accuracy is analyzed by attitude angle error. Through numerical simulation, the validity of pulse width modulation control instructions and the feasibility of application of attitude control are verified.