| 摘要 |
The present invention includes a current supplying unit supplying a current to make a magnetic bearing have a unidirectional magnetic force; a rotor formed inside the sub bearing and fixated to the inner diameter of the sub bearing by being drawn by the magnetic force when the unidirectional magnetic force of the magnetic bearing is generated; a sensor joined to the outer circumference of the magnetic bearing, measuring first location coordinates, which are the location coordinates of the rotor before the magnetic force of the magnetic bearing is generated, and measuring second location coordinates, which are the location coordinates of the rotor after the magnetic force of the magnetic bearing is generated; a control unit receiving the first and second coordinates from the sensor, computing reference coordinates based on the second coordinates, comparing the first coordinates and reference coordinates to determine whether the reference coordinates are within a predetermined reference range or not, moving the rotor from reference coordinates if the reference coordinates are out of the reference range, calculating a gap value of the sub bearing at the second location coordinates, comparing a reference gap value of the sub bearing stored in the control value to determining whether the gap value is within a reference range or not, and generating an alarming massage for the replacement of the sub bearing when the gap value is out of the reference range; and an alarming unit receiving the massage from the control unit and displaying or outputting the massage. |
