Electricity: motor control systems – Open loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent
1999-07-23
2000-11-28
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...
388831, 318159, 318436, H02P 729
Patent
active
061546054
ABSTRACT:
A control device for a DC motor driving a diaphragm pump including a pulse generating integral circuit and a variable voltage setting integral circuit. The variable voltage setting integral circuit sets a pulse-base voltage at a level such that the DC motor is not rotated when no pulse is applied, thereby a high voltage overshoot generated at the rising and the falling point of an electrical pulse is restricted. Discharge of the diaphragm pump is accurately regulated by means of modifying frequency, voltage, and duty ratio of the pulse.
REFERENCES:
patent: 3808481 (1974-04-01), Rippel
patent: 3855520 (1974-12-01), Stich
patent: 4240014 (1980-12-01), Muller
patent: 4255722 (1981-03-01), Hochstrate
patent: 4257746 (1981-03-01), Wells
patent: 4384825 (1983-05-01), Thomas et al.
patent: 5295790 (1994-03-01), Bossart et al.
patent: 5757223 (1998-05-01), Nevin
Leykin Rita
Martin David
Sataco Co., Ltd.
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