基于双统计判据的速率陀螺故障诊断方法研究  

Fault Detection and Diagnosis for Rate Gyroscopes Based on Double-statistical Criterion

作　　者：苏林[1] 尚朝轩[1] 

机构地区：[1]军械工程学院光学与电子工程系

出　　处：《装备指挥技术学院学报》2011年第2期78-83,共6页Journal of the Academy of Equipment Command & Technology

摘　　要：针对卫星姿态控制系统中速率陀螺噪声增大、饱和、漂移等常见故障,直接利用各敏感器的输出数据,应用双统计判据法进行陀螺的故障检测与诊断。该方法利用测量数据之间的相关性将其分为主元子空间和残差子空间,在各空间中建立统计量来检测故障,通过双统计量的贡献图识别出故障传感器。仿真结果表明：双统计判据法对卫星姿态控制系统中的速率陀螺具有良好的故障检测与诊断能力。A sensor fault detection and diagnosis method based on double-statistical criterion for low precision, bias and drift faults of rate gyroscopes in the satellite attitude control system is presented. This method divides the measure space into principal component subspace （PCS） and residual subspace （RS） based on the correlation analysis of measure data. The relevant double-statistics variables are built in PCS and RS to detect faults. The double-statistics contribution plots are used to identify the fault sensor. The simulation results show that the double-statistics criterion approach has good performance in fault detection and diagnosis of the rate gyroscopes in the satellite attitude control system.

关 键 词：卫星姿态控制系统 双统计判据 故障诊断 

分 类 号：TP277[自动化与计算机技术—检测技术与自动化装置]