摘要
分析了卫星平台振动,建立了实时精确跟踪瞄准系统的数学模型.采用基于模糊规则的免疫PID控制器,包括决定应答速度的激活环节和决定稳定效果的抑制环节,抑制环节由模糊规则来逼近,通过遗传算法的寻优特性对控制器的参数进行设定,协调控制偏转镜的位置,从而改变视轴方向.最后,对系统扰动抑制性能进行仿真,仿真结果表明该控制律有效地实现了视轴的方向调整,并且提高了系统的动态响应品质.
The vibration of the satellite was analyzed, and a mathematical model of realtime pointing and tracking system was built up. An immune feedback proportional integral differential（ PID） controller based on fuzzy rules was presented, of which including an active term controlling the response speed and an inhibitive term controlling the stabilization effect; a fuzzy logic was implemented to approach the inhibitive term. Also, the genetic algorithm was adopted for parameter selection according to its optimizing characteristic. At last, simulation results verify the vibration suppression performance and show the highly robust and efficient controller design.
出处
《航空动力学报》
EI
CAS
CSCD
北大核心
2009年第1期235-240,共6页
Journal of Aerospace Power
基金
国家自然科学基金重点项目(60434010)
黑龙江省杰出青年基金(JC200606)
关键词
快速反射镜
免疫反馈
模糊规则
遗传算法
视轴稳定
振动抑制
fast steering mirror （FSM）
immune feedback
fuzzy
genetic algorithm
line-of-sight stabilization
vibration suppression
