Scalable, Highly Dynamic Electromagnetic Linear Drive With Limited Travel And Low Transverse Forces

摘要

A scalable, highly dynamic electromagnetic linear drive with limited travel. The linear actuator is distinguished by low transverse forces. The linear actuator comprises a stator comprising two soft-magnetic limbs; an armature made of soft-magnetic material which is flat at least in certain sections and which is arranged so as to be movable along an axis between the limbs of the stator; at least two flat coils with a soft-magnetic core and a large coil height, which coils are attached to the stator (stator coils), wherein the coil cores are part of the soft-magnetic limbs or are connected thereto in a magnetically conductive fashion; at least one flat coil (armature coil) with a soft-magnetic core and a large coil height which is attached to the armature, wherein the coil core can be part of the armature or can be formed therefrom, or the armature coil is located with its soft-magnetic core lying in a recess in the flat armature; a well-defined start and end position of the travel (“end positions”); at least one switchable means which is designed to lock the armature in at least one end position counter to a restoring force, for example a self-locking magnet or a mechanical latch, a switchable power supply composed of an energy accumulator, for example a capacitor battery, and at least one switch.

主权项

1. A scalable, highly dynamic electromagnetic linear drive having limited stroke, comprising:
a stator which has two soft magnet arms; an at least partially flat armature made of soft magnet material, which is arranged in a manner allowing movement along a longitudinal axis between the arms of the stator; at least two flat stator coils with a soft magnet core and high winding depth, which are attached to the stator, wherein the coil cores are part of the soft magnet arms or are connected to the same in a manner allowing magnetic conductance; at least one flat coil with a soft magnet core and high winding depth, which is attached to the armature, wherein the coil core is part of the armature and/or can be formed from the same, or the armature coil is positioned, with its soft magnet core, lying in a recess of the flat armature; a well-defined stroke initiation position and stroke end position; at least one switchable means which is designed to hold the armature in at least one end position against a return force; a switchable power supply comprising an energy storage device and at least one switch.