Electricity: motor control systems – Closed loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent
1987-12-07
1989-05-09
Dobeck, Benjamin
Electricity: motor control systems
Closed loop speed control system for dc motor with commutator
Armature control by digital or combined analog and digital...
388900, 388903, 388910, 388934, H02P 500
Patent
active
048292184
ABSTRACT:
A control circuit for adjusting current to a direct current motor that has a free wheeling diode connected in parallel with the armature winding includes a controllable switching element connected in series with the armature winding, a comparator that has a control voltage corresponding to a desired rotational speed of the motor applied to one input of the comparator and an integrating circuit connected to the other input of the comparator. An electronic switch is connected across the integrating circuit, and the output of the comparator controls the controllable switching element and the electronic switch.
REFERENCES:
patent: 3560828 (1971-02-01), Kobayashi et al.
patent: 4211961 (1980-07-01), Marumoto et al.
patent: 4218641 (1980-08-01), Arnold et al.
patent: 4325011 (1982-04-01), Peterson
patent: 4458186 (1984-07-01), Kuriyama et al.
patent: 4547715 (1985-10-01), Li
Elektronik, "Verbesserte Strombegrenzung fur Leistungstransistoren", 11/30.5, 1986, pp. 118-120.
Elektronik, "600-W-Motorsteuerung fur Netzbetrieb mit hoher Schaltfrequenz", 1978, pp. 61-65.
Braun Aktiengesellschaft
Dobeck Benjamin
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