摘要
研究了航天器刚柔耦合非线性系统的自适应变论域模糊控制问题;针对自适应变论域模糊控制器的稳定性设计这一难题,将输入和输出的隶属度函数分别用论域值表示成解析形式;引进李亚谱诺夫函数,设计了输入隶属度函数论域值的自适应律和输出隶属度函数中心取值的自适应律,最后针对由中心刚体Hub和大挠性结构组成的刚柔耦合航天器进行系统仿真,结果表明设计的自适应变论域模糊控制器是可行的。
Adaptive fuzzy control based on scaling universe of discourse for rigid-flexible coupling spacecrafts has been researched in this paper. This paper aims at the difficulty of designing stable adaptive controller based on scaling universes of discourse, lets input membership function and output membership function be denoted as input universe of discourse and the center value of output membership function, then adopts Lyapunov function and designs an adaptive law of input universe of discourse and the center value of output membership function. Finally a spacecraft with solar arrays is simulated using the method and the results show that the adaptive fuzzy control method based on scaling universe of discourse is effective for the spacecraft with large flexible structures.
出处
《航天控制》
CSCD
北大核心
2007年第5期28-32,共5页
Aerospace Control
基金
国家自然科学基金资助项目(10472006)
关键词
刚柔耦合
自适应
变论域
模糊控制
Rigid-flexible coupling
Adaptive
Scaling universes of discourse
Fuzzy control
