Disturbance Observer Robust Control for Synchronized Drive of Dual Linear Motors System

Based on synchronization of dual linear motors in the feed direction of gantry moving type boring-milling machining center, disturbance observer control method is proposed to limit the asynchronization of X - drift caused by the parameters variation. Besides, load dynamic compensation of Y- drift is proceeded to decrease disturbance to X- drifts. The results of simulation test indicate that the proposed system has strong robustness and good rapidity, and dynamical synchronous error is small. So this control method can satisfied the demand of the controlled subject for the high precision synchronous control.