| 摘要 |
PURPOSE:To maintain reliability by a method wherein when differences occur between the counted value of a position sensing counter of a window and the actual position of the window, a correction is made to set the counted values to normal values. CONSTITUTION:After the initialization is performed, a motor 16 is actuated by means of a control circuit 11, correspondingly to the operation of a switch 12 or 13 to upwardly drive a window in a closing direction, or to downwardly drive in an opening direction. In such an acting condition of the window, output pulse signals from a revolution sensing circuit 18 are counted to successively recognize the position of opening of the window. If the actual position of the window is deviater upward or downward from the counted value of a position counter, a completely closed condition of window, wherein, for example, rotation pulse signals are not inputted, that is, the motor 16 stops or lock current is sensed, is provided to reset the position counter, thereby eliminating the deviation of counted values. |
