Numerical control servo system

Details Numerical control servo system Numerical control servo system

1976-06-11

1978-07-04

Dobeck, B.

Electricity: motive power systems

Positional servo systems

With compensating features

318561, 364118, G05D 23275

Patent

active

040991130

ABSTRACT:
A numerical control servo system, in which a set value in a setting memory and a measured numerical value corresponding to a controlled variable are subtracted one from the other by means of a digital subtractor and an object to be controlled is controlled based on the subtracted value in a manner to reduce the subtracted value to zero, such a control being repeatedly performed. Prior to each control, the output from the digital subtractor at the end of an immediately preceding control is written in a deviation memory. During the control, the value stored in the deviation memory is added directly or indirectly to the set value to compensate for the controlled deviation.

REFERENCES:
patent: 3512060 (1970-05-01), Floyd
patent: 3757188 (1973-09-01), Brewer et al.
patent: 3917930 (1975-11-01), Davey et al.

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