Center error value of bearings measuring method
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United States of America Patent
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Nov 19, 2019
Grant Date -
Jan 25, 2018
app pub date -
Jun 6, 2017
filing date -
Jul 25, 2016
priority date (Note) -
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status (Latency Note)
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Abstract
A method of measuring a center error between bearings includes disposing both sides of a rotation shaft on inner circumferential surfaces of a magnetic bearing and a backup bearing, applying current to the magnetic bearing to produce movement of the rotation shaft, determining a contact point between the rotation shaft and the backup bearing according to movement of the rotation shaft, determining a final target value using the contact point and predetermined position information of the magnetic bearing, determining a magnetic center of the magnetic bearing through the final target value, comparing the magnetic center of the magnetic bearing and a mechanical center of the backup bearing to determine a center error, and aligning the magnetic center of the magnetic bearing and the mechanical center of the backup bearing based on the determined center error.
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