Electromagnetic actuator with integrated passive damper

摘要

An electromagnetic actuator (100) comprises magnets (109, 111, 113, 115, 11), and a ferromagnetic structure (103) accommodating control conductors (118, 121, 123, 125). The magnets and the structure can move with respect to one another under control of control currents in the control conductors. The magnetic field in a gap (107) between the magnets and the ferromagnetic structure is oriented perpendicular to the direction of relative movement. The structure (103) accommodates damping conductors (127) that form closed loops of an electrically conductive material, different from the ferromagnetic material. The damping conductors (127) provide a damping force induced by the relative movement.

主权项

1. An electromagnetic actuator comprising:
an arrangement of a first plurality of magnets for generating a magnetic field in a region adjacent to the arrangement; and a structure of a ferromagnetic material at least partly accommodated within the magnetic field and itself accommodating a second plurality of control current conductors, the structure including a plurality of teeth and the second plurality of control current conductors comprising a winding on each of the plurality of teeth; wherein: the arrangement and the structure are configured for moving relative to one another under control of respective control currents in respective ones of the second plurality of control current conductors; the arrangement and the structure are spatially separated by a gap; the magnetic field in the gap is oriented substantially perpendicular to a direction of relative movement; and the structure accommodates one or more damping current conductors, each respective one thereof forming a respective closed loop of an electrically conductive material, different from the ferromagnetic material, for providing a respective damping force induced by the relative movement.