Motor speed controller

Details Motor speed controller Motor speed controller

1986-06-20

1987-09-01

Shoop, Jr., William M.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318317, 318326, G05B 500

Patent

active

046911502

ABSTRACT:
A matrix print head drive motor is controlled in speed with a long term and a short controller. The short term controller maintains the speed of the drive motor at a relative constant for a range of torque loadings. When the torque range shifts, the long range controller shifts the response range of the short term controller so as to maintain the speed of the drive motor substantially constant.

REFERENCES:
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patent: 3617844 (1971-11-01), Giygera
patent: 3775653 (1973-11-01), Peterson
patent: 3936711 (1976-02-01), Gay
patent: 3947737 (1976-03-01), Kimura
patent: 4078193 (1978-03-01), Anderson
patent: 4204777 (1980-05-01), Jen
patent: 4280082 (1981-07-01), Achaiya
patent: 4394604 (1983-07-01), Brecy
patent: 4510423 (1985-04-01), Iwasawa
patent: 4556830 (1985-12-01), Schwalm
patent: 4567409 (1986-01-01), Ogawa
patent: 4580082 (1986-04-01), Guerin-Pinaud

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