Electricity: motor control systems – Open loop speed control system for dc motor with commutator – Analog armature control
Patent
1990-05-21
1992-06-02
Ro, Bentsu
Electricity: motor control systems
Open loop speed control system for dc motor with commutator
Analog armature control
310 68R, 310DIG6, H02K 1100, H05K 720
Patent
active
051194660
ABSTRACT:
A control motor comprising an integrated direct current motor and speed control circuit, the speed control circuit controlling a rotational speed of the direct current motor by means of changing a voltage applied to an armature by a chopping of a switching element, the speed control circuit being composed upon a printed circuit board, the printed circuit board being supported in the direct current motor by a case member formed of a heat-conducting material, and a radiation portion of the switching element which is closely contracted with a projection formed integrally with the case member and is installed in the projection.
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patent: 3909679 (1975-09-01), Petri
patent: 4385276 (1983-05-01), Bitzel
patent: 4472649 (1984-09-01), Namba et al.
patent: 4554473 (1985-11-01), Muller
patent: 4668898 (1987-05-01), Harms et al.
patent: 4724347 (1988-02-01), Reinhardt et al.
patent: 4779031 (1988-10-01), Arends et al.
patent: 4940041 (1990-07-01), Riedmaier et al.
patent: 4973158 (1990-11-01), Marsh
Asmo Co. Ltd.
Ro Bentsu
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