G - Physics – 04 – C
Patent
G - Physics
04
C
318/20
G04C 3/14 (2006.01) H02P 8/00 (2006.01) H02P 8/02 (2006.01) H02P 8/38 (2006.01)
Patent
CA 1173894
POSITION DETECTOR FOR A STEPPING MOTOR ABSTRACT OF THE DISCLOSURE The invention provides a feed arrangement enabling the detection of the rotor position of a stepping motor in rela- tion to polarity of the motor pulses and to apply a series of long duration pulses should the polarity be considered to be wrong. The detector includes means for sampling the induced voltage generated by the motor at a predetermined moment, the motor being then open circuited, comparing said voltage with a reference signal and using the result of the comparison to determine whether or not the long duration pulses should be applied to the motor. The arrangement is distinguishable from other inventions by the fact that one bases the detection of the rotor stepping not through detecting whether or not the rotor has stepped or whether the load has varied but on the polarity of the rotor pulse relative to the position of the rotor. The proposed arrangement is very reliable since the difference between the induced voltage produced by a correct pulse and the voltage produced by an incorrect pulse is very large. The invention is intended for use with micromotors as used in timepieces.
355630
Gowling Lafleur Henderson Llp
Societe Suisse Pour L'industrie Horlogere Management Services S.
LandOfFree
Method for detecting position of a stepping motor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method for detecting position of a stepping motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method for detecting position of a stepping motor will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1201165