US PATENT SUBCLASS 388 / 842
CLOSED LOOP ACCELERATION CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR

Current as of: June, 1999
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388 /   HD   ELECTRICITY: MOTOR CONTROL SYSTEMS

842CLOSED LOOP ACCELERATION CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR {2}
843  DF  .~> Field control, or field and armature control
844  DF  .~> Armature control {1}

DEFINITION

Classification: 388/842

CLOSED LOOP ACCELERATION CONTROL SYSTEM FOR DC MOTOR WITH COMMUTATOR:

(under the class definition) Subject matter wherein a signal proportional to the running speed of a DC commutating motor (i.e., a feedback signal) is used to regulate the input to the motor to control the rate of change of speed (i.e., acceleration of deceleration) or the motor.

(1) Note. In this subclass, and the subclasses indented hereunder, the control circuitry may function in either a digital mode or an analog mode or a combination of digital and analog modes. See the Glossary in the class definition for "digital" and "analog."

SEE OR SEARCH THIS CLASS, SUBCLASS:

848+, for open loop (i.e., without feedback) acceleration control systems for commutating DC motors.

SEE OR SEARCH CLASS

318, Electricity: Motive Power Systems,

64, and 90+ for acceleration control in plural, diverse, or diversely controlled DC motors; and subclasses 138 and 254 for acceleration control in brushless (i.e., noncommutating) motors.