A 1-DOF Controlled Magnetic Bearing for Compact Centrifugal Blood Pumps

-Design of Magnetic Bearing-

Abstract

This paper describes a novel 1-DOF controlled magnetic bearing for compact centrifugal blood pumps. Firstly, structure of the magnetic bearing is introduced. The magnetic bearing passively supports the radial and tilt motion of the rotor by a combination of permanent magnets. The axial movement of the rotor is controlled by three electromagnets. Then, based on the numerical analysis, using static magnetic field simulation, the magnetic bearing is designed, and the geometrical dimensions are optimized.