Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent
1997-09-29
1999-09-14
Masih, Karen
Electricity: motor control systems
Closed loop speed control system for dc motor with commutator
Armature control by digital or combined analog and digital...
318798, 318800, 318811, 318599, 388928, H02P 517
Patent
active
059534915
ABSTRACT:
The speed of a rotor in a two-winding, permanent magnet motor can be accurately controlled with a dual-polarity pulse width modulation drive signal. The phase back emf signal generated in the non-excited winding is compared against the phase of a command signal and the results of the comparison are used to vary the duty cycle of the drive signal.
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Kluss Walter J.
Parfomak Walter
Sears Jerome
Allied-Signal Inc.
Masih Karen
Yeadon Loria B.
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