Closed-loop dc motor acceleration
Closed-loop dc motor acceleration the use of sensors to provide feedback to the motor control circuit indicating the motor is actually accelerating before the starting resistors are removed from the armature circuit. Two popular methods to sense motor acceleration are cemf coils, and current sensing coils.
Source: http://ee.sharif.edu/~lcsl/useful/Electrical%20Engineering%20Dictionary.pdf
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Author of the text: Ed. P.A. Laplante Boca Raton: CRC Press LLC, 2000
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