PMDC 전동기의 브러시 접촉저항 산정 방법

A new method for calculating contact resistance of brush in PMDC(Permanent Magnet Direct Current) motors is described in this paper. When designing the motor, it is very difficult to estimate contact resistance of brush. Thus, mathematical modeling of contact resistance of brush from the mechanical point of view is presented. At the result, this method is verified by comparing value of contact resistance of brush through a new method and through the experiment, also result of characteristic analysis considering contact resistance of brush is shown.