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研究了大型卫星三轴大角度姿态机动控制。建立了以控制力矩陀螺作为执行机构的大型卫星姿态动力学方程,针对快速性和鲁棒性要求,设计了一种滑模变结构控制器。控制器基于反馈四元数,避免了源自三轴大角度机动欧拉角描述的奇异性,且滑动模态能满足Lyapunov意义的渐近稳定。仿真结果验证了该控制器的有效性和优良性能。
The maneuvering control of large satellite three-axis large-angle attitude is studied. A large satellite attitude dynamics equation with control moment gyroscope as actuator is established. Aiming at the requirements of fastness and robustness, a sliding mode variable structure controller is designed. Based on the feedback quaternion, the controller avoids the singularity originating from the description of the Euler angles of the three-axis maneuvering large angle and the sliding mode can satisfy the asymptotic stability of the Lyapunov sense. The simulation results verify the effectiveness and excellent performance of this controller.