Suppression of Thrust Fluctuation of a New Ironless Tubular Permanent Magnet Synchronous Linear Motor Based on the Halbach Array

Figure 23

Harmonic analysis diagram of motor back EMF at different speeds: (a)  = 0.02 m/s; (b)  = 0.6 m/s; (c)  = 1 m/s.

(a)

(b)

(c)