外测系统突发性故障的诊断方法研究

外测系统突出性故障的检测与诊断因航天测控中十分重要的意义，基于动态测量数据的容错处理技术，建立了三组实用的过程故障诊断方法，无须建模的容错平滑器方法；基于模拟拟合的容错辨识方法，基于状态空间模型析有界影响滤波方法，这些方法既可用于对测控网跟踪质量的事后分析也可用于（准）实时在线处理，仿真计算结果显示这些方法不但能够１００％的准确率检测出脉冲型故障，还可快速有效地检测出任何形式的关联型故障，准确率达

Diagnosis Approaches for Abrupt Faultsof Tracking and Telem etry System

Itis im portantto detect and diagnose allkinds ofabruptfaultcom ing fromtracking and telem etry system . Based on fault tolerance techniques, three new approachesare given in this paper. One is a fault tolerance sm oother w ithoutm odeling, the second isa fault tolerance estim ator based on m odelfitting and the third is a bounded filter underthe state space m odel. These new approaches can be used notonly after the eventbut alsoon line or on tim e. Sim ulation show s thatthese new approaches can detectisolated faultsw ith 100% accuracy and diagnose correlative faults very efficiently.