Electricity: motor control systems – Open loop speed control system for dc motor with commutator – Armature control by digital or combined analog and digital...
Patent
1988-03-11
1989-06-20
Ro, Bentsu
Electricity: motor control systems
Open loop speed control system for dc motor with commutator
Armature control by digital or combined analog and digital...
318558, 112 1, 112277, D05B 6936
Patent
active
048412066
ABSTRACT:
Variable potential and breaking detection potential of a controller in a sewing machine are respectively subjected to analog-to-digital conversions, thereby to make it possible that the breaking detection of the controller and correction of dispersions of component accuracies of the controller are effected at one time.
REFERENCES:
patent: 3836834 (1974-09-01), Abbatiello et al.
patent: 4295080 (1981-10-01), Fujita et al.
Kongo Takeshi
Orii Akira
Janome Sewing Machine Co. Ltd.
Ro Bentsu
Striker Michael J.
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