建立了一个微开关接触电阻模型。
A model of contact resistance for a microswitch is presented.
模型中考虑了电、热、力的耦合以及材料物性参数随温度的变化，在电热耦合模型中计入接触电阻与闪光烧损对产热过程的影响；
In addition the material physical parameter variation with temperature was considered in the model. The contact resistance and flash melt were considered in the electric-heat coupling model;
利用该统一模型，分析了外加直流电压法、外加交流电压法、乒乓切换法中电刷接触电阻对励磁绕组接地电阻测量值的影响和危害。
By using power of DC superimposed AC, oxidation rate rose with increase of voltage but had nothing to do with frequencies in this experiment.
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