A Method Research on Robust Fault Diagnosis of Integrated Navigation Systems
Optimal Parity-vector Test (OPT) approach was applied to the fault diagnosis of the integrated navigation systems. According to robust design principle, the optimal parity vectors, be most sensitive to designated sensors fault and least sensitive to other sensors fault and unknown in-puts such as noises, were designed and the optimal parity residuals were obtained. According to matrix theory, the fault detection and fault isolation functions were constructed, respectively. Many Monte-Carlo simulations were performed in three navigation systems by using the presented method and the general fault diagnosis method, respectively, and the results show the proposed method, compared with the general diagnosis method, can increase the fault isolation rate obviously for navigation systems who have greater measurement noise. This proposed method depends only on the measurement data of every navigation sensor not on their dynamic models and can be applied to the fault of other redundant sensor systems.
Navigation system fault diagnosis Fault Detection and Isolation (FDI) Parity-vector Test Robust
Zhang Lingxia Chen Ming He Hua
School of Mechano-electronic Engineering,Xidian University,Xian 710071,China School of Automation,Northwestern Poly-technical University,Xian 710072,China
国际会议
西安
英文
2007-08-16（万方平台首次上网日期，不代表论文的发表时间）