Speed control device for direct current motors

Details Speed control device for direct current motors Speed control device for direct current motors

1974-08-01

1977-07-05

Dobeck, B.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318328, 318341, H02P 516

Patent

active

040342743

ABSTRACT:
A speed control device for direct current motors comprises a tacho generator which generates signals corresponding to the rotating speed of a motor, a reference signal generating device to regulate the rotating speed of a motor uniform, a deviation detector for these signals, a comparison wave generator and a control device, the temperature characteristics of said tacho generator are offset by temperature compensating means, such as a diode arrangement whose characteristics correspond to the temperature characteristics of the tacho generator and which moves the errors introduced by the tacho generator.

REFERENCES:
patent: 2776397 (1957-01-01), McWilliams
patent: 3354371 (1967-11-01), Ainsworth
patent: 3396323 (1968-08-01), Auld
patent: 3437826 (1969-04-01), Kelley
patent: 3609494 (1971-09-01), Takahashi
patent: 3611096 (1971-10-01), Sadashige
patent: 3777234 (1973-12-01), Luger

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