A High-Precision Rotor Position and Displacement Prediction Method Specially for Bearingless Permanent Magnet Synchronous Motor

Figure 8

Prediction and error of rotor displacement under external displacement disturbance.

(a) Displacement at 0.12s with disturbance

(b) Prediction error of displacement under disturbance

(c) Displacement at 0.08s with disturbance

(d) Prediction error of displacement under disturbance