International Journal of Precision Engineering and Manufacturing

Korean Society for Precision Engineering (한국정밀공학회)
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Position Control of an AC Servo Motor Using Sliding Mode Controller with Disturbance Estimator

  • Jung-Woo (Department of Mechanical Engineering, Inha University) ;
  • Seung-Bok (Department of Mechanical Engineering, Inha University) ;
  • Hyun-Jeong (Department of Mechanical Engineering, Inha University) ;
  • Joon-Ho (Department of Mechanical Engineering, Inha University)
  • Published : 2004.10.01
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Abstract

In this work, a new control methodology to achieve accurate position control of an AC servo motor subjected to external disturbance is proposed. Unlike conventional sliding mode controller which requires a prior knowledge of the upper bound of external disturbance, the proposed technique, called sliding mode controller with disturbance estimator (SMCDE), can offer robust control performances without a prior knowledge of the disturbance bound. The SMCDE is featured by an integrated average value of the imposed disturbance over a certain sampling period. By doing this, undesirable chattering phenomenon in the estimation process can be effectively alleviated. The benefits of the proposed control methodology are empirically demonstrated on AC servo motor and control responses are evaluated through a comparative work between the proposed and conventional control schemes.

Keywords

References

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