Balance correction information of a rotating body

An apparatus for obtaining balance correction information of a rotating body, the apparatus comprising a processor configured to:

• obtain first vibration data along a direction intersecting an axis of rotation of the rotating body, when the rotating body is rotating at a specific rotational speed without a trial weight being applied to the rotating body and without trial cutting being performed on the rotating body;
• obtain second vibration data along a direction intersecting the axis of rotation, when the rotating body is rotating at a low-range rotational speed lower than the specific rotational speed without the trial weight being applied to the rotating body and without the trial cutting being performed on the rotating body;
• obtain third vibration data along a direction intersecting the axis of rotation, when the rotating body to which the trial weight has been applied at a first correction position is rotating at the specific rotational speed, or when the rotating body on which the trial cutting has been performed at the first correction position is rotating at the specific rotational speed;
• and
• obtain the balance correction information based on the first vibration data, the second vibration data, and the third vibration data.

A method of balancing a rotating body, the method comprising:

• obtaining first vibration data along a direction intersecting an axis of rotation of the rotating body when the rotating body is rotating at a specific rotational speed before balance adjustment is performed on the rotating body;
• obtaining second vibration data along a direction intersecting the axis of rotation when the rotating body is rotating at a low-range rotational speed lower than the specific rotational speed before the balance adjustment is performed on the rotating body;
• obtaining third vibration data along a direction intersecting the axis of rotation when the rotating body is rotating at the specific rotational speed after the balance adjustment is performed on the rotating body;
• obtaining balance correction information based on the first vibration data, the second vibration data, and the third vibration data;
• and
• balancing the rotating body using the balance correction information.