公开(公告)号：EP0094753A1

公开(公告)日：1983-11-23

申请号：EP83302422.7

申请日：1983-04-28

申请人： LUCAS INDUSTRIES public limited company

发明人： Hodgson, John George ,  Godfrey, David

IPC分类号： H01H51/22 ,  H01H51/00 ,  H01F7/14

CPC分类号： H01F7/14 ,  H01H51/01 ,  H01H51/2281

摘要： An electromagnetic actuator comprises a yoke (18) of a material having a low magnetic remanence, and a rare earth permanent magnet (24) in series with said yoke (18), providing a magnetic circuit having no flux gap. A coil (28) can induce in the yoke (18) a flux which is opposed to that from the permanent magnet (24), and an armature (26) which is responsive to the combined flux from said permanent magnet (24) and said coil (28).

摘要翻译： 电磁致动器包括具有低磁残余的材料的轭（18）和与所述轭（18）串联的稀土永磁体（24），提供没有磁通间隙的磁路。 线圈（28）可以在轭架（18）中诱导与永磁体（24）相反的磁通，以及电枢（26），该电枢响应于来自永磁体（24）和所述 线圈（28）。