摘要
建立了一个微开关接触电阻模型.模型将粗糙的触头表面理想化为多微丘结构,并考虑了表面粘连效应,给出了接触电阻与接触力之间的变化关系.结果显示,在低接触力下,粘连效应十分重要.粘连模型与Majumder等人所建立的模型以及实验值的比较结果表明,粘连效应可以用来解释弹性模型与实验之间的偏差.
A model of contact resistance for a microswitch is presented.In this model the rough surface of the contact is idealized as a plane with some asperities.The sticking effect is also considered.The variation of contact resistance with contact force is calculated.The results show that the sticking effect is significantly important at small contact forces.Comparing the new model with that developed by Majumder et al.,the experimental results show that the sticking effect can explain the deviation of the contact resistances in an elastic model.
