Patent ID: 8405330

Claim:
A motor control module for a motor, the motor having i) a plurality of phases, and ii) a rotor configured to be arranged in a plurality of positions, the motor control module comprising: a position control module configured to output position data to control the plurality of positions of the rotor; a power control module configured to drive the plurality of phases of the motor in response to the position data, apply a testing voltage to the motor when the rotor is in each of a first predetermined position and a second predetermined position, measure a first transient current in response to the testing voltage being applied to the motor when the rotor is in the first predetermined position, and measure a second transient current in response to the testing voltage being applied to the motor when the rotor is in the second predetermined position; and an inductive sensing module configured to determine whether the rotor is restricted from rotating based on a difference between the first transient current and the second transient current.