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Class Information
Number: 388/842
Name: Electricity: motor control systems > Closed loop acceleration control system for dc motor with commutator
Description: 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.


Sub-classes under this class:

Class Number Class Name Patents
388/844 Armature control 6
388/843 Field control, or field and armature control 11


Patents under this class:

Patent Number Title Of Patent Date Issued
7619849 Magnetic disk drive with controlled transducer movement during a seek Nov. 17, 2009
7529608 Vehicle drive control device May. 5, 2009
6538406 System and method for improving transient speed response of electric motors Mar. 25, 2003
6281657 Image detecting apparatus and method Aug. 28, 2001
5397972 Start-up procedure for a brushless, sensorless motor Mar. 14, 1995
5384439 Adaptive digital velocity control loop for a high performance elevator door system with low cost Jan. 24, 1995
4751439 Multiple chopper speed control system for compound motor Jun. 14, 1988
4217526 D.C. Motor speed controller Aug. 12, 1980



 
 
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