| http://www.w3.org/ns/prov#value | - Where the number of magnetic poles of the stator is represented by m, the number of gear-like salient poles of the rotary plate is Z, and n is an integer equal to or larger than 1, in order to obtain a minute step angle, m, n and Z are selected to satisfy the following relationship: when m=9, and a 3-phase winding stator, Z=9n???3.
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