精选优质文档-倾情为你奉上1 IntroductionThe problem of non-invasive diagnosis of the faults of rotor bars in the induction motor belongs to difficult problems 5, 7. Motor with this type of damage is still functioning but such work causes increased currents at both sides of the broken bar. This causes the damage of the next bars. The result of this avalanche process is the damage of all bars, and finally the machine stops functioning. Thus,the most important problem is to catch the moment when only