DIAGNOSTIC METHOD FOR SWITCHING STATE OF COMMUTATOR MACHINES Russian patent published in 2015 - IPC H01R39/58 G01R31/34 H02K13/00 H02K13/10 

FIELD: electricity.

SUBSTANCE: in diagnostic method for switching state of commutator machines at collector rotation during passage of collector plate with pre-labelled mark past the collector position sensor light flux from it is converted by the sensor to sync pulse with duration equal to time of the collector plate passage under leave edge, which is delayed by controlled pulse delay device until the moment of approach of pre-labelled collector plate under leave edge. At the moment of approach of pre-labelled collector plate under leave edge sync pulse is sent to photoelectric converter, which by means of charge-coupled device matrix converts light emission from sparking into a signal equivalent to image of commutator and sparking process during the period of the surveyed plate passage under leave edge. The obtained signals are summed up, filtered up to production of the resultant signal equivalent to the sparking image, integrated and visualised. Two values are obtained for sparking intensity and ratio of sparking brush edge length to complete length of the brush, and sparking degree is set for the surveyed collector plate against these values as specified in the application materials.

EFFECT: improved accuracy of diagnostics over switching state of commutator machine.

1 dwg, 1 tbl