A novel linear and rotary Halbach permanent magnet actuator with two degrees-of-freedom

This paper presents a novel linear and rotary Halbach permanent magnet actuator, which is capable of two degrees-of-freedom movements. The magnetic field distributions of the actuator are analytically analyzed using the magnetic scalar potential, where its tubular mover is transferred into a planar one by using a magnetic field curvature factor. The linear cogging force and rotary cogging torque and the stator flux-linkage of the actuator are subsequently predicted validated by the three-dimensional finite element method.