Magnetic circuit for producing regulated magnetic flux between C-shaped steel rail and coil-less support part for vehicle, has middle part of magnets adjusted based on gap length for normal force stabilization by control force of actuator

摘要

The circuit has permanent magnets including a unit per pole half in a flow direction. Flow guiding cross-sectional surfaces of the magnets are embedded in iron. The magnets are separated by a gap. The surfaces are larger than a pole surface at the gap. A division into three units is provided transverse to the direction. A middle part (Mv) of the magnets is frictionlessly displaced around a magnet width transverse to the direction. The middle part is adjusted based on a gap length for stabilization of an easily controllable normal force (Fn) by a control force (deltaF) of an actuator.