H - Electricity – 02 – P
Patent
H - Electricity
02
P
318/18
H02P 8/00 (2006.01) H02K 37/00 (2006.01) H02K 37/12 (2006.01) H02P 8/14 (2006.01)
Patent
CA 1283442
ABSTRACT OF THE DISCLOSURE A system for driving a drum includes a pulse motor including an annular rotor fixedly mounted within the drum for rotation therewith and rotatable relative to a stator disposed within the rotor. The pitches of the rotor teeth and stator teeth are determined in such a manner that a magnetic flux linking each of the coils is changed in a sinusoidal fashion in synchronism with the rotation of the rotor. A pole position-detecting device produces a multi-phase sinusoidal pole position-detecting signal representative of the position of the magnetic poles relative to the rotor. A speed control device produces a current amplitude command signal representative of a desired torque of the rotor. A multiplier multiplies the pole-position detecting signal by the current amplitude command signal to produce a multiplication signal. A current control device is responsive to the multiplication signal to output to the coils a drive current corresponding in amplitude to the current amplitude command signal and corresponding in phase to the pole-position detecting signal, thereby energizing the coils to rotate the rotor together with the drum relative to the stator.
525384
Fukuyama Norio
Kyutoku Senzo
Maeno Satoru
Nakamura Thutomu
Ohishi Tetsuo
Ridout & Maybee Llp
Shinko Electric Co. Ltd.
LandOfFree
System for driving drum does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with System for driving drum, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System for driving drum will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1314885