Analog/digital numerical control system

Details Analog/digital numerical control system Analog/digital numerical control system

1978-03-22

1980-03-11

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Multiple mode systems

318596, 318612, G05B 1118

Patent

active

041930223

ABSTRACT:
An analog/digital numerical control system that utilizes analog techniques to process large scale (macro) differences and digital techniques to process small scale (micro) differences. In this manner, advantage is taken of the respective virtues of both analog and digital processing techniques while avoiding the disadvantages associated with the exclusive use of either approach. In addition, a novel tach responsive braking generator is disclosed for particular use in controlling the positioning of high mass heads that is adapted to provide dynamic braking of the controlled machine assembly to accomplish proper positioning without "hunting".

REFERENCES:
patent: 2921247 (1960-01-01), Morrison
patent: 3248622 (1966-04-01), Kelling
patent: 3665500 (1972-05-01), Lewis et al.
patent: 3670228 (1972-06-01), Crosby
patent: 3723843 (1973-03-01), Pearson
patent: 3749997 (1973-07-01), Cohen et al.
patent: 3995206 (1976-11-01), Aronstein et al.

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