| IMU/GPS车辆导航系统故障检测与隔离新方法 |
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| 引用本文： | 杨波,高社生,张震龙.IMU/GPS车辆导航系统故障检测与隔离新方法[J].系统工程,2005,23(2):112-116. |
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| 作者姓名： | 杨波 高社生 张震龙 |
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| 作者单位： | 西北工业大学,自动化学院,陕西,西安,710072 |
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| 摘 要： | 提出一种基于IMU／GPS车辆组合导航系统故障检测与隔离的新方法。该方法两次构造奇偶向量，根据奇偶向量服从的统计分布来逐次完成故障予系统的检测与隔离，并采用极大似然估计法对故障向量进行了估计与修复校正。仿真结果表明，该方法能够准确及时地检测与隔离出故障予系统，并有效地提高了组合系统的容错性能。
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| 关 键 词： | 组合导航系统 故障检测与隔离 奇偶向量 x^2检验法 |
| 文章编号： | 1001-4098(2005)02-0112-05 |
New Method for Fault Detection and Isolation in IMU/GPS Integrated Navigation System for Vehicle |
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| YANG Bo,GAO She-sheng,ZHANG Zhen-Long.New Method for Fault Detection and Isolation in IMU/GPS Integrated Navigation System for Vehicle[J].Systems Engineering,2005,23(2):112-116. |
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| Authors: | YANG Bo GAO She-sheng ZHANG Zhen-Long |
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| Abstract: | In this paper, a new method for fault detection and isolation was given, which was used in IMU/GPS integrated navigation system for vehicle. The different parity vectors were constructed twice, and then the faulted subsystem can be (detected) and isolated by judging the statistical distribution of the parity vectors. And the maximum likelihood estimate was used to estimate and correct the fault vector.Simulation results show that,the faulted subsystem can be detected and isolated accurately in time by this method, and the fault tolerance of the integrated system was also improved effectively. |
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