Design and real-time implementation of a multivariable gyro-mirror line-of-sight stabilization platform

  • Authors:
  • K. C. Tan;T. H. Lee;E. F. Khor;D. C. Ang

  • Affiliations:
  • Department of Electrical & Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore;Department of Electrical & Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore;Department of Electrical & Computer Engineering, National University of Singapore, 10 Kent Ridge Crescent, Singapore 119260, Singapore;Seagate Technology International, 63 The Fleming, Science Park Drive, Singapore Science Park, Singapore 118249, Singapore

  • Venue:
  • Fuzzy Sets and Systems - Featured Issue: Selected papers from ACIDCA 2000
  • Year:
  • 2002

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Abstract

Gyro-mirror line-of-sight stabilization platform is a nonlinear, multivariable and highly coupled system. It forms the basis of a wide range of practical instruments used for the purposes of sighting and targeting in both surface and airborne vehicles, which is capable of maintaining the sightline of a mirror when it is subjected to external disturbances. However, a spinning gyro has a property known as precession such that when a torque is applied to one axis, it will contrary to the intuition of mechanics, and results the rotation in the direction of another axis. This behavior poses a problem in controlling the line-of-sight since movement about one axis will cause a coupled movement in the other. In this paper, an efficient full-matrix fuzzy logic controller is designed and implemented for a practical nonlinear gyro-mirror line-of-sight stabilization platform Both simulation and real-time experimental results demonstrate the effectiveness of the designed full-matrix fuzzy gyroscope control system, which offers an excellent closed-loop response for the transient and tracking performances, with significant reduction in the coupling effect against cross-axis interactions.