【作者】 李浩群； 李德胜； 刘本东； 尚德广；

【Author】 Li Haoqun, Li Desheng, Liu Bendong, Shang Deguang (The College of Electro-Mechanical Engineering, Beijing University of Technology, Beijing 100124, China)

【机构】 北京工业大学机电学院；

【摘要】 微电磁继电器的衔铁吸合特性是其性能的主要指标。本文动态设计一种微电磁继电器,介绍了其驱动原理。通过对微电磁继电器的电磁驱动力进行分析计算,综合考虑活动衔铁吸合动作过程中受到的惯性力、空气阻尼以及活动衔铁和触点之间的接触力作用,建立了动力学分析模型,研究了活动衔铁的动态吸合特性。分析了不同活动衔铁结构对响应时间、接触面积、强度等方面的影响,对活动衔铁结构进行动态设计和仿真。本文得到的结论对其它类似微执行器的动态分析也具有一定的指导意义。更多还原

【Abstract】 The pull-in characteristic of the armature in electromagnetic microrelay is very important. In this paper, an electromagnetic microrelay is dynamically designed, and its performance principle is presented. By analysis of the electromagnetic driving force, the dynamic model is established. Synthetically taken into account the dynamic factors of inertia, air damping and contact force, the armature’s pull-in characteristic is discussed in detail. The analytical results indicate that structure parameters of the armature, such as thickness, width, skin and thigh, have considerable effect on the contact area, switching time and intensity of microrelay. The conclusions of this paper also are suitable for other similar microrelay.更多还原