Method and apparatus for detecting a stalled stepper motor

Details Method and apparatus for detecting a stalled stepper motor Method and apparatus for detecting a stalled stepper motor

2005-12-27

2005-12-27

Martin, David (Department: 2837)

Electricity: motive power systems

Open-loop stepping motor control systems

C318S685000, C318S565000, C318S430000, C318S431000, C318S434000, C318S445000, C318S461000

Reexamination Certificate

active

06979972

ABSTRACT:
A method for detecting a state of an electric motor includes: energizing the motor with electrical power such that an associated current applied to the electric motor rises over time toward a reference level; determining an amount of time that elapses between when the motor is energized and the reference level is reached; and, evaluating a state of the motor based upon the determined amount of time.

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