Permanent magnet-type stepping motors

Details Permanent magnet-type stepping motors Permanent magnet-type stepping motors

H - Electricity

02

K

H02K 37/14 (2006.01)

Patent

CA 2734444

A permanent magnet-type stepping motor (20) broadly includes: a movable member (e.g., a rotor) having a number of magnetic poles (21 ) on a surface thereof, with adjacent poles be-ing of opposite polarity, the number of poles be-ing a function of a constant, the number of phases and a desired step interval; and a stationary mem-ber (e.g., a stator) having a number of equally--spaced teeth (22) arranged to face toward said movable member surface, each of said teeth hav-ing a plurality of fingers (23) arranged to face to-ward said movable member surface, the number of said teeth being a whole integer that is a function of a constant, the number of said poles, the num-ber of said fingers on each stator tooth, and the number of phases.

Linvention concerne un moteur pas à pas à aimant permanent (20) qui comprend globalement : un élément mobile (comme un rotor) possédant un certain nombre de pôles magnétiques (21) sur sa surface, les pôles adjacents étant de polarités différentes, le nombre de pôles étant fonction dune constante, du nombre de phases et dun intervalle de pas souhaité ; et un élément stationnaire (comme un stator) possédant un certain nombre de dents également espacées (22) et orientées vers ladite surface de lélément mobile, chacune desdites dents comportant une pluralité dergots (23) orientés vers ladite surface de lélément mobile, le nombre de dents étant un nombre entier qui est fonction dune constante, du nombre desdits pôles, d nombre desdits ergots de chaque dent de stator et du nombre de phases.

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