High intensity radial field magnetic actuator

摘要

At least one set of two magnets is provided, at least one of the magnets having an outer magnet portion, a middle magnet portion, and an inner magnet portion. The outer magnet portion has a magnetization pointing in an at least partially axial direction. The middle magnet portion has a magnetization substantially perpendicular to the magnetization of the outer magnet portion. The inner magnet portion has a magnetization directed substantially anti-parallel to the magnetization of the outer magnet portion. The apparatus also includes at least one electrically conductive coil positioned at least partially between the set of two magnets. At least one substantially magnetically permeable object is positioned at least partially between the set of two magnets. A rod is integral with the substantially magnetically permeable object.