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Stepped Tooth Configuration For Stepper Motors

IP.com Disclosure Number: IPCOM000051548D
Original Publication Date: 1981-Feb-01
Included in the Prior Art Database: 2005-Feb-10

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Related People

Chai, HD Schacht, GH [+details]


It is well known that optimum stepper motor performance is obtained when the valley-to-tooth ratio (W(v)/W(t)- see Fig. 2) is in the neighborhood of 1.5. As a consequence, a greater number of step motors having small step angles, on the order of 2 degrees, are designed around this ratio. However, for motors having large step angles, the use of this ratio introduces a negative factor into motor performance. This factor can be eliminated by the use of the tooth configuration proposed below.