GENERATOR OF MECHANICAL AUTO-OSCILLATIONS Russian patent published in 2023 - IPC B06B1/16 

FIELD: mechanics; electromechanics; test equipment.

SUBSTANCE: generator of mechanical self-oscillations contains a synchronous electric machine with permanent magnets on the rotor and three phase windings on the stator, two of which are connected in series and connected to a regulated DC source, and the third winding is connected to the output of the power amplifier, the input of which is connected to the output of the corrective unit. The generator additionally includes an algebraic adder, an amplifier and a current sensor connected in series with a regulated DC source. The output of the current sensor through the amplifier is connected to the subtractive input of the algebraic adder, the summing input of which is connected to two series-connected stator windings of the synchronous motor, and the output is connected to the input of the corrective unit.

EFFECT: reduced sensitivity of self-oscillation parameters to changes in direct current and winding resistance.

1 cl, 1 dwg