Electricity: motor control systems – Open loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent
1997-12-10
2000-10-03
Martin, David
Electricity: motor control systems
Open loop speed control system for dc motor with commutator
Armature control by digital or combined analog and digital...
388815, H02P 7285
Patent
active
061284378
ABSTRACT:
A digital control device used with a direct-current (DC) motor is disclosed. The digital control device controls the revolving speed of a DC motor by outputting a certain intensity of current according to the digital states of a group of digital signals inputted therein from the external such as a computer system. The digital control device performs a precise control for the revolving speed of the DC motor at low cost, and the speed levels of the DC motor can be varied with the circuitry details of the digital control device.
REFERENCES:
patent: 4449082 (1984-05-01), Webster
patent: 4458185 (1984-07-01), Matty et al.
patent: 4517501 (1985-05-01), Takimoto
patent: 5831405 (1998-11-01), Massie
Delta Electronics , Inc.
Martin David
LandOfFree
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