Servomotor control device using servomotor rotation speed extrap

Details Servomotor control device using servomotor rotation speed extrap Servomotor control device using servomotor rotation speed extrap

1992-07-21

1994-06-21

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Digital or numerical systems

318621, 388902, G05B 602

Patent

active

053230965

ABSTRACT:
A servomotor control device including a drive pulse generating circuit for generating a pulse signal having a frequency corresponding to an actual frequency of a servomotor, and arithmetic operation unit for outputting a control signal on the basis of the pulse signal for control of the servomotor. The arithmetic operation unit generates the control signal by implementing an extrapolation correction on the basis of preestimated variation of a frequency of the servomotor due to a time delay between a moment when the pulse signal is generated and a moment when the control signal is applied to the servomotor.

REFERENCES:
patent: 4563623 (1986-01-01), Matsuka
patent: 4697127 (1987-09-01), Stich et al.
patent: 4953070 (1990-08-01), Yamamoto
patent: 5038090 (1991-08-01), Kawabata et al.
IBM Technical Disclosure Bulletin, vol. 32, No. 6B, Nov. 1989, pp. 105-107, Digital Control of Spindle Motor.
Machine Design, vol. 58, No. 28, Nov. 1986, pp. 173-177, New Approach to Speed Control, Joseph Altnether.

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