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Robust speed tracking of permanent magnet synchronous motor servo systems by equivalent disturbance attenuation

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2 Author(s)
S. S. Yang ; Dept. of Autom., Tsinghua Univ., Beijing ; Y. S. Zhong

A new robust controller consisting of a nominal controller and a robust compensator is proposed. The controller is applied to a permanent magnet synchronous motors servo system to eliminate speed-tracking error due to time-varying load torque uncertainty and parameter perturbations. It is proved that the speed-tracking error can be made as small as desired if the initial conditions are zeros. For cases where the initial conditions are non-zero but bounded, after a finite transient period, the same speed-tracking error reduction can be achieved. Simulation results are presented to confirm the efficiency of the proposed method

Published in:

IET Control Theory & Applications  (Volume:1 ,  Issue: 3 )