A method for fault detection and isolation in the integrated navigation system for UAV

In this paper, a method for real-time fault detection and isolation is presented, which has been tested successfully for unmanned aerial vehicles. In this method, two parity vectors are constructed to achieve the fault detection and isolation. In addition, the maximum likelihood estimate is used to estimate and correct the fault vector. Simulation results show that not only can the faulty system be detected accurately in time by this method, but also the fault can be repaired efficiently. Thus, the fault tolerance of the integrated system is improved remarkably by this method.

[1]  Xu Sheng.  Research on wavelet transform method for the fault-detection of the integrated navigation system , 2003 .

[2]  Liu Zhun.  New Fault Detection Structure and Algorithm Based on Federated Filter , 2002 .

[3]  K. C. Daly,et al.  Generalized Likelihood Test for FDI in Redundant Sensor Configurations , 1979 .

[4]  Robert F. Stengel,et al.  DETECTING AND IDENTIFYING MULTIPLE FAILURES IN A FLIGHT CONTROL SYSTEM , 1998 .

[5]  Hong Jin,et al.  Optimal parity vector sensitive to designated sensor fault , 1999 .

[6]  M.D. Srinath,et al.  A Fault-Tolerant Multisensor Navigation System Design , 1987, IEEE Transactions on Aerospace and Electronic Systems.

[7]  N. A. Carlson,et al.  Federated filter for fault-tolerant integrated navigation systems , 1988, IEEE PLANS '88.,Position Location and Navigation Symposium, Record. 'Navigation into the 21st Century'..

[8]  Igor V. Nikiforov.  A simple recursive algorithm for diagnosis of abrupt changes in random signals , 2000, IEEE Trans. Inf. Theory.

[9]  P. J. Lawrence,et al.  Comparison of federated and centralized Kalman filters with fault detection considerations , 1994, Proceedings of 1994 IEEE Position, Location and Navigation Symposium - PLANS'94.

[10]  Liu Cheng.  Fault tolerant design of SINS/GPS/DVL integrated navigation system , 2003 .

[11]  Bradford W. Parkinson,et al.  Parity space methods for autonomous fault detection and exclusion using GPS carrier phase , 1996, Proceedings of Position, Location and Navigation Symposium - PLANS '96.

[12]  I. V. Nikiforov.  Quadratic tests for detection of abrupt changes in multivariate signals , 1999, IEEE Trans. Signal Process..