Computer controlled motor

Details Computer controlled motor Computer controlled motor

1984-10-24

1985-11-19

Shoop, Jr., William M.

Electricity: motive power systems

Open-loop stepping motor control systems

318685, 137 3, H02P 800

Patent

active

045544999

ABSTRACT:
To control a motor, a pulse width modulated signal from a computer is fed to a capacitor which stores each pulse as a voltage proportional to the width of the pulse, the capacitor being reset to zero by a leading edge reset circuit. The voltage on the capacitor is sampled by a sample/hold circuit the output of which is fed to a converter which converts the voltage signal to a frequency signal exponentially related to the voltage, and hence to the pulse width. The converter then powers a driver which drives the motor. The exponential relationship between the pulses and the signal fed to the motor permits a large variationin the frequency signal based on a small variation in pulse width and hence permits accurate control of the motor.

REFERENCES:
patent: 3309507 (1967-03-01), Schlein
patent: 3475392 (1969-10-01), McCoy et al.
patent: 3504362 (1970-03-01), Feldmann
patent: 3566240 (1971-02-01), Okamota
patent: 3729624 (1973-04-01), Hopkins et al.
patent: 3751644 (1973-08-01), Mayer
patent: 4016079 (1977-04-01), Severin
patent: 4066092 (1978-01-01), Dulger et al.
patent: 4144804 (1979-03-01), O'Keefe et al.
patent: 4176052 (1979-11-01), Bruce et al.
patent: 4292577 (1981-09-01), Cesarz et al.
patent: 4313075 (1982-01-01), Stewart et al.
Design Engineer's Guide to DC Stepping Motors, The Superior Electric Co., 1976.
Check et al., "Programmable Stepper Motor Control", IBM Technical Disclosure Bulletin, vol. 17, No. 11, Apr. 1975.
J. C. King, "IBM Technical Disclosure Bulletin", 22(7), 2901-2902, (Dec. 1979).

Affiliated with

Also associated with

Rating

Computer controlled 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 Computer controlled motor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Computer controlled motor will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-85844