摘要
对组合导航系统故障检测方法进行了对比研究。除介绍了χ2检验法、数据变化率检验法,还提出了一种基于模糊综合评价的故障检测方法。它以模糊综合评价算法为基础,对组合导航系统中的每个子系统的测量值进行综合判断,以确定该子系统的工作状态。最后,利用GPS/INS组合导航系统对上述三种故障检测方法进行了对比研究。实验结果表明,χ2检验法对于软故障不敏感,数据变化率检验法对连续长时间出现的故障无法判断。而基于模糊综合评价的故障检测方法针对具体的组合导航系统,通过适当调整参数,对所有类型的故障都能很好地检测。
The fault detection methods for integrated navigation systems are compared. The X^2 test method and the judgment method of data change rate are presented, and a fault detection method based on fuzzy comprehensive evaluation is proposed.The method comprehensively judged all the measured data of each subsystem in order to determine states of the subsystems. At last, the X^2 test three methods are compared in an experiment on a GPS/INS integrated navigation system.The results of the experiment shows that the Z2 test method is not sensitive to softfaults, the judgment method of data change rate could not judge continuous faults, and the method of fuzzy comprehensive evaluation could judge all of faults by adjusting parameters properly for concrete integrated navigation systems.
出处
《控制工程》
CSCD
2006年第2期117-119,共3页
Control Engineering of China
基金
973国家重点基金资助项目(5131201-4)
关键词
故障检测方法
组合导航系统
模糊综合评价
fault detection methods
integrated navigation system
fuzzy comprehensive evaluation
