DEVICE FOR DIAGNOSTICS OF ELECTRIC COMMUTATOR MACHINES SWITCHING CONDITION Russian patent published in 2010 - IPC G01R31/34 H02K13/14 H01R39/58 

FIELD: measurement equipment.

SUBSTANCE: invention is related to the field of electromechanics and may be used to detect extent of their sparking. Device for diagnostics of electric commutator machines switching condition comprises optical synchroniser on the basis of electro-optical Kerr or Pockels cell and two polarisers, which are electrically connected to each other, photoelectric transducer, amplifier, electronic registering instrument and system of optical synchroniser control with electric sensor of commutator position synchronisation, device for controlled delay of pulses and pulse amplifier. Commutator of electric machine under trailing edge of brush, optical synchroniser and optical input of photoelectric transducer are connected optically. Output of commutator position synchronisation sensor is connected to input of device for controlled delay of synchronisation pulses, output of which is connected to input of pulse amplifier, and electrodes of amplitude light modulator are joined to output of pulse amplifier. Test results demonstrated that accuracy of information on extent of sparking at each moment of switching period at each commutator plate increases by 12%.

EFFECT: provision of valid information on extent of sparking for each investigated commutator plate in case of its every position under trailing edge of brush.

3 cl, 1 dwg, 1 tbl, 1 ex