中国科技核心期刊

中文核心期刊

CSCD来源期刊

空间控制技术与应用

• 短文 • 上一篇    

基于LQR的小卫星磁姿态控制设计

郭延宁;李传江;马广富

  

  1. 哈尔滨工业大学控制科学与工程系

  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2008-10-25 发布日期:2008-10-25

An LQR-Based Magnetic Attitude Control Design for Small Satellite

GUO Yanning;LI Chuanjiang;MA Guangfu

  

  1. Dept.Control Science and Engineering;HarbinInstitute of Technology;Harbin 150001;China
  • Received:1900-01-01 Revised:1900-01-01 Online:2008-10-25 Published:2008-10-25

摘要: 研究仅采用磁力矩器作为执行机构的近地小卫星姿态控制问题。通过对刚体卫星的非线性动力学和运动学方程在平衡点处进行线性化处理,得到一个线性周期时变系统,应用线性二次最优调节器理论设计出最优磁矩控制律。最后针对某小卫星进行了仿真验证,结果表明所设计的最优控制律可以很好地完成三轴姿态稳定任务。

关键词: 小卫星, 姿态控制, LQR, 磁控制

Abstract: The attitude control problem of low earth orbit(LEO)satellites actuated by magnetorquers only is investigated.By linearizing the nonlinear dynamic and kinematic equations of rigid satellites,a linear periodically time-varing system is obtained.The linear quadratic optimal regulator theory is applied to design an optimal control law for magnetorquers.Simulation results show that the designed optimal magnetic control law can stabilize three-axis attitude of satellites effectively.

Key words: small satellite, attitude control, linear quadratic regulator(LQR), magnetic control

中图分类号: 

  • V448.2