US Patent: 3,215,915 - Phase Sensitive Servo Control System


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US Patent: 3,215,915

Phase Sensitive Servo Control System

Patentee:

Arthur O. Fitzner (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI

USPTO Classifications:

318/575

Tool Categories:

metalworking machines : machine tool controls

electrical devices : electronic circuitry and apparatus

Assignees:

Giddings & Lewis Machine Tool Co. - Fond Du Lac, Fond Du Lac County, WI

Manufacturer:

Not known to have been produced

Witnesses:

Unknown

Patent Dates:
Applied:	Jun. 04, 1962
Granted:	Nov. 02, 1965

Patent Pictures:

USPTO (New site tip)
Google Patents
Report data errors or omissions to steward Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.

Description:

Claim:

The present invention pertains in general to phase control systems, and in particular to systems in which the relative displacement of two movable parts of a synchronous induction device is caused to produce a corresponding shift in phase between a recurring reference wave and a recurring output wave. While not so limited in its application, the invention finds especially advantageous use in phase-sensitive servo controls, employed for example in automatic machine tool positioning and contouring apparatus, wherein a movable member is caused to follow in position and velocity the extent and the rate of change of phase displacement between two recurring waves.