Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent
1997-01-08
1998-03-17
Ro, Bentsu
Electricity: motor control systems
Closed loop speed control system for dc motor with commutator
Armature control by digital or combined analog and digital...
369239, 363 46, 318268, 318432, G11B 1928, H02P 517
Patent
active
057296529
ABSTRACT:
A method for controlling the speed of a motor driven by an unregulated voltage supply is disclosed. The disclosed method comprises obtaining a ripple signal (V.sub.R) representative of the ripple component of the supply voltage, and modulating the motor current (I.sub.M) in response to at least the ripple signal to maintain the speed of the motor at a prescribed target speed.
REFERENCES:
patent: 4358730 (1982-11-01), Beifus
patent: 4622500 (1986-11-01), Budelman, Jr.
patent: 5250890 (1993-10-01), Tanamachi et al.
patent: 5298841 (1994-03-01), Katayama et al.
patent: 5331261 (1994-07-01), Brown et al.
patent: 5350989 (1994-09-01), Wedeen
patent: 5481451 (1996-01-01), Kuwahara
Iomega Corporation
Ro Bentsu
LandOfFree
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