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

Figure 6

Rotor displacement and predicted error at 3 000 r/min.

(a) Comparison of displacement on the -axis

(b) Displacement prediction error on the -axis

(c) Comparison of displacement on the -axis

(d) Displacement prediction error on the -axis