Abstract
The maenetic damper based on Lorentz Force is suitable for suppressing vibrations of rotating machines or moving machines in a clean room because of non-contact usage. ln this report, we suggest that a conductor of a circular-cylinder-type is added to a magnetic damper for a rotating machine composed of two conductor disks and a round shape magnet. Also we model not only the magnetic damper with the two conductor disks but also with the conductor of the circular-cylinder-type separately. As the result. both the analytical damping ratios agree well with the experimental ones.