DEVICE FOR IMPROVING COMMUTATION OF DC COMMUTATOR MACHINES Russian patent published in 2002 - IPC

FIELD: electronic engineering; dc commutator machines. SUBSTANCE: for improving machine commutation feedback signal responding to condition of commutation is passed from radio signal sensor through resonance-tuned circuit, then through voltage amplifier, and adjustable-threshold comparator to input of increment counter whose output and reset circuit are connected to control unit; connected to the latter is control circuit of analog multiplexer whose first input receives signal coming from current sensor of independent commutating winding; signal arriving from armature current sensor is applied to its second input and analog-to-digital converter is connected to its output; analog-to-digital converter output is connected to control unit that functions to compute and generate assigned values for analog-to-digital converter whose output signal is applied to power supply input. EFFECT: improved commutation conditions. 1 dwg