Servo system employing digital components

Details Servo system employing digital components Servo system employing digital components

1976-12-27

1978-08-22

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

318603, 318608, 318661, G05B 1924

Patent

active

041091850

ABSTRACT:
A servo system, particularly well suited for use in a computerized numerical control system for a large machine tool, in which a plurality of axis controlling servo circuits are controlled by one computerized axis controller. As each controlled axis moves, an attached resolver's output is digitized to generate a digital position feedback signal which is compared to the desired position in the computer. The resultant error signal is converted to an analog voltage to control said axis motion. A digital clock and counter drives two digital to analog converters to create the two resolver inputs, and supplies timing signals to the computer, thus synchronizing the system.

REFERENCES:
patent: 3519904 (1970-07-01), Rogers
patent: 3906324 (1975-09-01), Smith
patent: 4021714 (1977-05-01), Jones et al.
patent: 4023085 (1977-05-01), Bishop et al.

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