Cp. Liu et al., The performance of a single-phase DC brushless motor utilizing the ferromagnetic base material, J MAGN MAGN, 209(1-3), 2000, pp. 176-179
In this paper, the effect of the magnetic base plate on a single-phase sand
wich-type brushless DC motor is investigated. The simulation indicates that
the cogging torque increases and torque constant k(1) and coefficient of b
ack emf k(e) decrease in comparison with a nonmagnetic base plate. (C) 2000
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