Stall Detection on Step Motor Using Back EMF Detection
Original Publication Date: 1989-Sep-01
Included in the Prior Art Database: 2005-Jan-28
This invention allows one to determine whether a step motor has stalled (is not running synchronously with the input pulses) by sensing the signals on one pair of the motor leads. As described, it will work in applications where a step motor is driven with two phases on, by a constant current bipolar driver.