| 摘要 |
PURPOSE: A device is provided to accurately control the rotation angle of the motor in accordance with the volume of rotation of the motor determined through the pulses output from the coil during the operation of the motor. CONSTITUTION: A device comprises a motor(1) having a rotating shaft(2) coupled with a driving gear(3); a plurality of decelerating gears(4) for reducing rotating force of the driving gear; an operating gear(5) engaged with the decelerating gears; an operating stem(6) supported at the center of the operating gear; an air flow direction adjustment plate(7) for adjusting air flow direction of the vehicle air conditioner; a rotation angle sensing unit(10) for generating pulse signals in accordance with the volume of the rotation of the motor; a sensing unit(30) for sensing and counting the pulse signals generated from the rotation angle sensing unit; an arithmetic operation unit(31) for calculating the volume of the rotation of the motor by using the value counted by the sensing unit, and providing the result of calculation to a control unit(34); an air flow direction adjustment button(32) for permitting a user to adjust air flow direction; a motor driving unit(33) for driving the motor in accordance with the control of the control unit; and the control unit for controlling the motor driving unit in such a manner that the motor rotates in the direction corresponding to the input of the air flow direction adjustment button, and outputting a stop signal in accordance with the information input from the arithmetic operation unit.
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