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Volume 24 Issue 5
May  1998
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Journal of Beijing University of Aeronautics and Astronautics  > 1998  >  24(5): 619-622.
Yang Yuanhong, Ma Jing. Close-Loop FOG Self-Diagnosing and Application in RSDIMU[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(5): 619-622. (in Chinese)
Citation: Yang Yuanhong, Ma Jing. Close-Loop FOG Self-Diagnosing and Application in RSDIMU[J]. Journal of Beijing University of Aeronautics and Astronautics, 1998, 24(5): 619-622. (in Chinese)
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Close-Loop FOG Self-Diagnosing and Application in RSDIMU

  • Beijing University of Aeronautics and Astronautics,School of Astronautics

  • Received Date: 02 Jun 1997
  • Publish Date: 31 May 1998
    Abstract
  • The loop characteristic of close-loop interferometer fiber optic gyroscope(I-FOG) was studied first and its self-diagnosing capability has been reveal. A new type FOG with self-diagnosability has been gotten and used in a redundant strapdown inertial measure unit (RSDIMU), and a new fail tolerance algorithm has been designed for this unit too. In this algorithm, both the output and the state information of this FOG were induced, so that the information redundancy at the instrument grade has been realized and the fail tolerance capability was improved from fail operate(FO)-fail operate(FO)-fail safe(FS) to FO-FO-FO-FO-FS. Using Markov reliability evaluation mode, the reliability was calculated, compared with the old system, the reliability was improved greatly.

     

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    • References(1)
  • 1. Matthews A. Utilization of fiber optic gyros in inertial measurement unit. Journal of the Institute of Navigation, 1990, 37(1):17~38 2. Udd E. Introduction to fiber optic gyros:10th anniversary conference. In:Udd E. Fiber optic gyros:10th anniversary conference. Denver,Colorado:SPIE-The International Society for Optical Engineering, 1986, 719:2~5 3. Wei S Y,Huddle J R. Sensor management for fault tolerant integrated inertal flight control reference and navigation system.PLAN'86-Position Location and Navigation Symposium. New York:Institute of Electrical and Electronics Engineers,1986.445~455 4. Motyka P. Reliability analysis and fault-tolerant system:development for a redundant strapdown inertial measurement unit. NASA-83-16887, 1983
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