公开(公告)号：US3727133A

公开(公告)日：1973-04-10

申请号：US3727133D

申请日：1970-12-28

Applicant: GEN ELECTRIC

Inventor： WEICHBRODT B ,  MARVIN J ,  MARTZLOFF F

IPC: G01R31/34 ,  G01R31/02

CPC classification number: G01R31/343

Abstract: A signal is derived corresponding to variations in the unidirectional current flowing in the external power lines to a direct current rotating machine. A second signal is derived from the first signal having a period equal to the period of revolution of a commutator divided by the number of commutator segments. The appearance in the second signal of peaks short in duration in relation to said period indicates a defect in commutation of current in the armature winding of the direct current machine.

Abstract translation: 对应于在外部电力线中流向直流旋转机器的单向电流的变化而导出的信号。 从具有等于换向器的转数周期的周期除以换向器段的数量的第一信号导出第二信号。 相对于所述周期的持续时间短的第二峰值信号的出现表明直流电机的电枢绕组中的电流换向不足。