ELECTRIC POWER STEERING (EPS) MOTOR CONSTRUCTION AND OPERATION


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Construction

•  The EPS motor is integrated with the steering column.
•  The EPS motor is a brushless motor which consists of a three-phase star-connected stator, a permanent magnet rotor, and Hall element sensors.
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Operation

•  Current flows from the EPS control module to the stator to rotate the motor axis which is integrated with the rotor.
•  Hall element sensors, which are integrated with the EPS motor and detect the rotor position, transmit the rotor position to the EPS control module.
•  Based on the rotor position input from the Hall element sensors, the EPS control module switches the current flow to each stator.