Motor speed control circuit

Details Motor speed control circuit Motor speed control circuit

2011-05-24

2011-05-24

Colon-Santana, Eduardo (Department: 2837)

Electricity: motor control systems

Closed loop speed control system for dc motor with commutator

Armature control by digital or combined analog and digital...

C388S822000, C388S934000, C318S798000, C318S799000, C318S400060, C318S471000

Reexamination Certificate

active

07949234

ABSTRACT:
A motor speed control circuit includes: a voltage generating circuit configured to change either a reference voltage corresponding to a target rotation speed of a motor or a speed voltage corresponding to a rotation speed of the motor, according to a temperature, and output the reference voltage and the speed voltage, either one of which is changed; a comparison circuit configured to compare the speed voltage output from the voltage generating circuit with the reference voltage output from the voltage generating circuit; and a driving circuit configured to drive the motor so as to match a level of the speed voltage to a level of the reference voltage, based on a comparison result from the comparison circuit.

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State Intellectual Property Office of P.R.C., Notification of First Office Action for Application No. 2008102103098, Mail Dated May 4, 2010.

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