摘要
针对存在未建模动态、模型参数不确定性和外力矩扰动的挠性卫星,通过选择合适的加权函数将挠性卫星姿态控制问题转化为H∞混合灵敏度问题。采用H∞优化方法设计了鲁棒控制器。最后对卫星姿态控制系统进行了仿真研究,结果表明采用鲁棒控制器的姿控系统较传统的PID控制的姿控系统具有更好的鲁棒稳定性和抗干扰性能。
For flexible satellite disturbed by neglected dynamics, parametric uncertainties and external torque disturbance, attitude control problem was converted into an H∞ mixed sensitivity problem through choosing suitable weighting functions. The controller was designed by H∞ optimization. Satellite attitude was eventually studied by simulation. The results show that the robust stability and the disturbance rejection performance of the attitude control system with the robust controller are much better than that with PID controller.
出处
《系统仿真学报》
CAS
CSCD
北大核心
2005年第4期968-970,985,共4页
Journal of System Simulation
基金
国家自然科学基金(90405017)
关键词
挠性卫星
H∞鲁棒控制
姿态控制
混合灵敏度
flexible satellite
H∞ robust control
attitude control
mixed sensitivity
