ELECTROMECHANICAL TEST RIG FOR POWER TRAIN TESTING Russian patent published in 2015 - IPC G01M13/02 

FIELD: testing equipment.

SUBSTANCE: invention relates to machine building, and test equipment, and can be used during testing of power train equipment, especially gears having long shafts, for example, transmission of helicopters tail end. In particular the suggested test rig is intended to test the power trains with resilient links, that require elimination of the torsion oscillations during loading. The electromechanical rig for the power trains testing contains the mechanically connected with the tested power train torque transmitter, induction motor connected to input of the tested power train, synchronous generator connected via the torque transmitter to output of the tested power train. If torsion oscillation occurred at output of the torque transmitter the voltage oscillations are generated, they via the differential first order unit, regulated delay unit and in parallel via the differential second order unit, regulated delay unit enter via the second summation unit to input of the current regulator of the induction motor, and via the third summation unit enter the input of the excitation current regulator of the synchronous generator. The signal controlled delay units with dead zones and filters do not pass the initial part of the oscillation (1/5 or 1/6 part of period) and filter top harmonic signals. The current regulator of the induction motor and excitation current regulator of the synchronous generator under action of these signals entering at antiphase to the first oscillations wave create the impact effect dampening oscillations.

EFFECT: improved reliability and fast response during load connection (up to 0,2 s); reduced power losses during tests to below 10% of loading power; rig is simple in designing and setting.

2 cl, 1 dwg