**Acknowledgements**

**Figure 8.** Time histories of the control currents of the electromagnetic levitation system using Fe of Eq. (13), which are

**Figure 9.** Time histories of the Euclidean norm of Fe of Eq. (13), which are obtained by the experiment.

obtained by the experiment.

36 Bearing Technology

The author would like to thank the Satellite Technology Research Center at the Korea Advanced Institute of Science and Technology for its support to develop the electromagnetic levitation system.
