Motor drive control circuit to restrict motor temperature rise b

Details Motor drive control circuit to restrict motor temperature rise b Motor drive control circuit to restrict motor temperature rise b

1983-10-31

1985-09-17

Wright, Jr., Ernest T.

Typewriting machines

Including type-set-assemblage mounted on carrier and...

Including type-faces movable relative to type-face-carrier

400320, 400719, 310 53, 318334, B41J 130

Patent

active

045417474

ABSTRACT:
A drive control system for controlling a drive motor in response to external command signals. The system comprises a first control arrangement for obtaining numerical values corresponding to amounts of successive intermittent operations of the drive motor responsive to respective external command signals, summing the obtained numerical values, and subtracting from a current sum of the numerical values a numerical value corresponding to a non-operation time period during which the drive motor is held at rest between the successive intermittent operations. The system further comprises a second control arrangement for inhibiting the operation of the drive motor responsive to the next command signal, for a length of time corresponding to the current sum after the drive motor has completed each of the intermittent operations, whereby the temperature of the drive motor is kept below an upper limit.

REFERENCES:
patent: 2280914 (1942-04-01), Johns
patent: 3965392 (1976-06-01), Moorhead et al.
patent: 4118129 (1978-10-01), Grundherr
patent: 4134692 (1979-01-01), Suzuki et al.
patent: 4232975 (1980-11-01), Kane
patent: 4307967 (1981-12-01), Araki et al.
patent: 4398837 (1983-08-01), Torii et al.
patent: 4405245 (1983-09-01), Fukushima

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