| 摘要 |
<p>An electromagnetic actuator comprising: a fixed piece consisting of a soft magnetic member having a plurality of magnetic poles, the surfaces on one side thereof being fixed; a moving piece consisisting of a soft magnetic member that is opposed to the other surfaces of the magnetic poles of said magnet and opposed to the plurality of magnetic poles of said fixed piece via gaps, said moving piece having magnetic poles to form parallel magnetic circuits relative to the magnetomotive force of said magnet; and an electric winding which is wound on said fixed piece to serially excite the magnetic circuit which consists of said fixed piece and gaps of said moving piece relative to said magnetic poles. As a current is supplied to said electric winding, a difference develops in the magnetic flux between the opposing magnetic poles, giving rise to the occurrence of mechanical displacement between the fixed piece and the moving piece. Therefore, the electromagnetic actuator produces strong thrust with slight current.</p> |
