US PATENT SUBCLASS 318 / 636
.~ "Sampling" systems including miscellaneous "sampled data" control systems


Current as of: June, 1999
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318 /   HD   ELECTRICITY: MOTIVE POWER SYSTEMS

560  DF  POSITIONAL SERVO SYSTEMS (E.G., SERVOMECHANISMS) {23}
636.~ "Sampling" systems including miscellaneous "sampled data" control systems


DEFINITION

Classification: 318/636

(under subclass 560) Subject matter in which a servo signal is not continuously measured, but is periodically sampled at a rate high enough so that there are no deleterious effects on servo performance. Also included herein are that class of servomechanisms termed "sample data" control systems.

(1) Note. Not included herein are systems in which the DC signal is converted into an equivalent AC signal by means of a "chopper" or a modulator.

SEE OR SEARCH THIS CLASS, SUBCLASS:

331, and 341, for motor speed control systems which may include similar techniques.