Brushed motor position control based upon back current...

H - Electricity – 02 – P

Patent

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Details

H02P 7/285 (2006.01) G01R 31/00 (2006.01) G01R 31/34 (2006.01) H02K 13/00 (2006.01)

Patent

CA 2609547

Brushed DC electric motors have a rotor with commutator portions moving into and out of contact with brushes. As each of these contacts end, a back EMF force is induced into a main current supply signal. The number of these periodic forces can be counted and utilized to identify the position of the component being rotated by the DC electric motor. This method is relatively insensitive to environmental changes, and thus more accurate than the existing art.

Moteurs électriques CC à brosse ayant un rotor avec des parties de commutateur entrant en contact et quittant le contact avec des brosses. Lorsque chacun de ces contacts s~achève, une force électromotrice inverse est induite dans un signal d~alimentation de courant principal. Le nombre de ces forces périodiques peut être compté et utilisé pour identifier la position du composant mis en rotation par le moteur électrique CC. Ce procédé est relativement insensible aux changements environnementaux, et donc est plus précis que l~art existant.

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