| 摘要 |
A method for designing a pole piece for a power assist steering system, includes: selecting a number of teeth, k, for the pole piece where k=n/2 and n represents an even number of poles; and selecting a ratio between an angle made by an inner tooth tip and an outer tooth tip, thetatp, and an angle made by a magnet pole width, thetamp, to provide a desired torque function for the steering system.
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