Speed control circuit for a DC motor

Details Speed control circuit for a DC motor Speed control circuit for a DC motor

1984-12-12

1985-08-27

Shoop, Jr., William M.

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318318, 318313, 318326, 318327, 318608, H02P 516, H02P 506

Patent

active

045380961

ABSTRACT:
A speed control circuit for a DC motor has a phase comparator to which is supplied a theoretical frequency, emitted by a clock pulse generator, and an actual frequency, emitted from a pulse transmitter connected to the drive shaft of the motor. A first rotation direction signal, obtained from a rotation direction indicator, and a second rotation direction signal, obtained from the comparator, are combined in a logic element, the output of which is supplied to a drive circuit for driving the DC motor. A reference voltage is also supplied to the drive circuit, the reference voltage being obtained from another output of the comparator and supplied to the drive circuit through a filter. The reference voltage is a DC voltage which is proportional to the amount of phase deviation detected by the comparator. This reference voltage is utilized by the drive circuit to set the proportional value of the current supplied to the DC motor.

REFERENCES:
patent: 3562615 (1971-02-01), Takuya Nasu et al.
patent: 4197489 (1980-04-01), Dunn et al.
patent: 4278925 (1981-07-01), Minakuchi
patent: 4307324 (1981-12-01), Regnier
patent: 4370677 (1983-01-01), Baldwin et al.
patent: 4380723 (1983-04-01), Leis et al.
patent: 4386300 (1983-05-01), Ogawa
patent: 4418307 (1983-11-01), Hoffmann et al.
patent: 4459533 (1984-07-01), Ehret et al.
patent: 4480215 (1984-10-01), Bax

Affiliated with

Also associated with

Rating

Speed control circuit for a DC motor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Speed control circuit for a DC motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Speed control circuit for a DC motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2003847