IJAT Vol.5 No.4 pp. 594-600
doi: 10.20965/ijat.2011.p0594


A Study on Semi-Active Magnetic Bearing Position-Controlled by Piezoelectric Actuators

Jung-Ho Park, Hu-Seung Lee, Young-Bog Ham,
and So-Nam Yun

Energy Plant Research Division, Korea Institute of Machinery & Materials, 104 Sinseongno, Yuseong-gu, Daejeon 305-343, Republic of Korea

March 31, 2011
May 12, 2011
July 5, 2011
magnetic bearing, piezoelectric actuator, permanent magnet, repulsive force, FEM analysis

This paper investigates non-contact hybrid bearings that use permanent magnets for repulsive force and piezoelectric actuators for position-control. A structurally-improved hybrid bearing is presented. First, the concept of the hybrid bearing is briefly introduced along with previous test results. Then, the newly devised bearing with a decreased gap between rotor and stator is designed and analyzed with FEM to optimize the magnetic forces. Finally, a prototype bearing using the proposed mechanism is fabricated and a control method is discussed.

Cite this article as:
Jung-Ho Park, Hu-Seung Lee, Young-Bog Ham, and
and So-Nam Yun, “A Study on Semi-Active Magnetic Bearing Position-Controlled by Piezoelectric Actuators,” Int. J. Automation Technol., Vol.5, No.4, pp. 594-600, 2011.
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