摘要
飞轮是很多卫星姿态控制系统中的重要执行部件,其星上自主故障诊断是一个很有意义的研究课题。本文根据飞轮系统的特点,在最小二乘(LS)参数估计方法的基础上提出了全最小二乘(TLS)参数估计的递推形式,证明了它对飞轮参数估计的收敛性,并用于飞轮缓变故障的检测和诊断,取得了较好结果。
Momentum Wheel (MW) is a key actuator in satellite attitude control systems, and the space-borne autonomous fault detection and diagnosis of MW is significant. This paper gives the recursive form of Total Least Square (TLS) parameter estimation based on Least Square (LS) method. On the basis of the characteristics of MW, The convergence of its parameter estimation is proved, and the simulation results of the detection and diagnosis to MW’s slowly changing faults are good.
出处
《航天控制》
CSCD
北大核心
1998年第3期17-22,共6页
Aerospace Control
关键词
故障检测
故障诊断
卫星姿态控制
飞轮系统
Fault detection\ Fault diagnosis\ Parameter estimation\ Least square method