Sliding Mode Control for Axial Flux Permanent Magnet Motor

The axial flux permanent magnet synchronous motor (AFPM motor) using magnet bearings instead of ball-bearings at both two shaft ends could allow rotational speed of shaft much greater than nominal speed. The paper proposes a controller for axial flux permanent magnet (AFPM) motor that adjusts both rotation rotor speed and axial rotor position by sliding mode controller. Controlled system performance is validated through a set of simulations.