摘要
本文以小卫星姿态控制系统为研究对象,当反作用飞轮转速过零时,摩擦力发生非线性变化,控制作用力矩出现不确定性,从而影响小卫星的姿态控制性能。本文在最优控制基础上加入了颤震信号对摩擦力进行补偿,通过仿真实验分析,对比最优控制与补偿控制,后者能够有效地抑制反作用飞轮转速过零时引起的姿态扰动,从而实现了高精度的卫星姿态控制。
For attitude control of the satellite, when the speed of reaction wheel pass through zero, the change of friction is nonlinear, and it affects the performance of the system. Based on the optimal control, a compensation method by adding a dither signal is proposed in the paper. Simulation results are also given.
出处
《自动化技术与应用》
2009年第4期56-57,61,共3页
Techniques of Automation and Applications
基金
黑龙江科技学院引进人才基金资助项目(编号:08-03)
