Velocity servo with adaptive tachometer feedback

Details Velocity servo with adaptive tachometer feedback Velocity servo with adaptive tachometer feedback

1980-05-12

1981-12-08

Smith, Jr., David

Electricity: motive power systems

Braking

Automatic and/or with time-delay means

318331, H02P 516

Patent

active

043050255

ABSTRACT:
A velocity servo for a motor wherein a high speed tachometer is replaced by an arrangement which mathematically converts the input voltage and current to the motor into a speed signal, utilizing known formulas and constants. To maintain accuracy of the servo when the constants change value with the temperature, an inexpensive low speed tachometer is utilized to derive a signal indicative of the actual speed of the motor and this speed signal is compared with the mathematically computed speed signal. In the event that there is a difference, the constants are modified in accordance with such difference. This can be implemented either by electrically alterable circuit values or through computer or microprocessor techniques.

REFERENCES:
patent: 3475672 (1969-10-01), Oltendorf
patent: 3560828 (1971-02-01), Kobayashi et al.
patent: 3568430 (1971-03-01), Walton
patent: 3875485 (1975-04-01), Hornung
patent: 4227129 (1980-10-01), Brooks
Henry et al., "Motor Tachometer Circuit," IBM Technical Disclosure Bulletin, vol. 14, No. 7, Dec. 1971.

Affiliated with

Also associated with

Rating

Velocity servo with adaptive tachometer feedback does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Velocity servo with adaptive tachometer feedback, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Velocity servo with adaptive tachometer feedback will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-569827