模式识别技术在卫星敏感器系统故障检测中的应用

一个长寿命卫星需要有高可靠性和安全性。由于单个元件的寿命期有限,通常利用冗余备份技术。这样就出现了故障检测问题。本文利用统计摸式识别中的wald序贯判决法对卫星敏感器系统进行故障检测。对一个具体的系统模拟表明,这种方法是可行的。

FAILURE DETECTION IN SENSOR SYSTEMS OF A SATELLITE USING PATTERN RECOGNITION TECHNIQUE

The failure detection in sensor systems of a long life satellite is needed because of the increasing demands on reliability and safety. Since the life of components which compose the system has its limitaion, we use redundant technique. The component (such as sensor) in the system has two or more redundant parts. If any of them fails, it will be replaced by another one. So the problem is how to detect the failure. A method which was called WALD SEQUENTIAL ANALYSIS in pattern recognition is presented in the paper. The use of microcomputers permits the application of the method in real time processing. The result of simulation of the method in a satellite control system shows that it is feasible to detect failure in the system.