Dual release actuator for vehicle seat and method for controlling the same

A dual release actuator, for a vehicle seat, comprising:

• a motor;
• a cable carrier configured to:
• receive power from the motor, and
• rotate, based on the received power, so as to pull one of two cables;
• a Hall sensor configured to sense rotation of the motor;
• and
• a controller configured to:
• count a sensing pulse of the Hall sensor, and
• control, based on the count of the sensing pulse, rotation of the motor,
• wherein the controller is configured to:
• store, based on a power failure, a current position of the motor in a non-volatile memory, and
• cause, based on power being restored and using the stored current position, returning of the cable carrier to an initial position.

A method of controlling a dual release actuator for a vehicle seat, the method comprising:

• storing, by a controller and based on a power failure, information indicating a current position of a cable carrier;
• causing, by the controller and based on power being restored, the cable carrier to return to an initial position using the stored information;
• causing, by the controller and based on receipt of a walk-in command or a folding command after the cable carrier is returned to the initial position, rotating of the cable carrier in a direction corresponding to the walk-in command or the folding command until the rotation of the cable carrier is stopped by a stopper protrusion;
• and
• updating, by the controller, the initial position to be a resultant position to which the cable carrier rotates, in a reverse direction to the direction, by an operation distance from a position at which rotation of the cable carrier is prevented by the stopper protrusion.