Acceleration control system for a d-c motor

Details Acceleration control system for a d-c motor Acceleration control system for a d-c motor

1974-05-20

1976-01-06

Dobeck, B.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318142, 318 7, H02P 516

Patent

active

039315550

ABSTRACT:
A digital pulse source generates a frequency analog of a desired velocity to which a d-c motor is accelerated. The acceleration circuit comprises a circuit means for converting a frequency analog signal to a frequency dependent direct voltage and a sawtooth voltage. A comparison circuit generates a motor drive signal having a duty cycle dependent on the relative voltage levels of the direct and sawtooth voltages. The comparative duty cycle of motor drive signal for two different velocities is regulated to be proportional to the square of the ratio of the two velocities.

REFERENCES:
patent: 2692361 (1954-10-01), Asbury et al.
patent: 2913652 (1959-11-01), Greenburg et al.

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