Servo control apparatus

Details Servo control apparatus Servo control apparatus

1990-06-11

1991-12-31

Shoop, Jr., William M.

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318571, 318490, 36447404, G05B 1918

Patent

active

050775073

ABSTRACT:
A servo control apparatus comprises an abnormality detection circuit which calculates a difference between the quantity of rotation of a servo motor from a reference point calculated on the basis of an accumulated value of the position feedback and the quantity of rotation of the servo motor from the reference point counted by a rotational detector, and puts out an absolute position abnormality signal when the calculated difference value exceeds a predetermined value.

REFERENCES:
patent: 4275342 (1981-06-01), Kawada et al.
patent: 4392195 (1983-07-01), Inoue

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