Detent force of a permanent magnet linear motor (PMLM) consists of cogging and end forces, and should be minimized for high precision purpose applications. This paper shows that the cogging force can be reduced very effectively by adopting an armature core having new structure of 9 PM poles and 10 winding slots. The end force is also minimized by optimizing the length of the armature core and shape of the exterior teeth by using evolution strategy combined with response surface method using multiquadric radial basis functions.
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