Electricity: motive power systems – Open-loop stepping motor control systems
Patent
1981-08-25
1983-02-01
Truhe, J. V.
Electricity: motive power systems
Open-loop stepping motor control systems
318685, 123440, H02K 2904
Patent
active
043718221
ABSTRACT:
A control device for a pulse motor having a plurality of polyphase stator coils, which includes a driving circuit having a plurality of power transistors arranged for sequentially energizing the stator coils, an abnormality detecting circuit arranged for comparing the input and output levels of the transistors to produce an output when the two levels are out of an inverted relationship, and a timer circuit arranged for producing a fault signal when the output of the abnormality detecting circuit is continuously produced over a predetermined period of time. The pulse motor control device may also include an alarm device and a safety device, both responsive to the output of the timer circuit to give the alarm and render the power transistors inoperative, respectively.
REFERENCES:
patent: 3801975 (1974-04-01), Kitano
patent: 4321643 (1982-03-01), Vernier
Hasegawa Shumpei
Narasaka Shin
Otsuka Kazuo
Bergmann S. M.
Honda Motor Co. Ltd.
Lessler Arthur L.
Truhe J. V.
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