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ACTA AERONAUTICAET ASTRONAUTICA SINICA ›› 1997, Vol. 18 ›› Issue (1): 86-88.

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INTELLEGENT FAULT TOLERANCE CONTROLLER FOR SERVO MOTOR OF PLATFORM IN AN INERTIAL NAVIGATION SYSTEM

Yan Lei, Wang Lina, Fan Yuezu, Zhang Hongyue   

  1. Faculty 301, Beijing University of Aeronautics and Astronautics,Beijing,100083
  • Received:1995-07-25 Revised:1996-01-02 Online:1997-02-25 Published:1997-02-25

Abstract:

An intellegent angular rate control for servo motor of platform in inertial navigation system(INS) with fibre optic gyro is developed. The servo control with double feedbacks of angle and angular rate is implemented by using 16 bit single chip computer 8089, in which two stage fault discrimination and one stage system reformation are implemented by the provided angular rate feedback channels with double redundancy. Fuzzy control relationship is set up to form its membership function and determine its fault discrimination threshold. It is shown in the system experiment that the intellegent control system works well, fuzzy discrimination of fault is correct , the channel switching under fault is steady, and the reformed system in which the fault is cut off works also normally.

Key words: angular velocity, redundancy, fuzzy systems, fault-thresholds

CLC Number: