Patent ID: 11969835
Assignee: LINCOLN GLOBAL, INC.
Field: Machine tools (Mechanical engineering)
Classification: CPC B  G | IPC B  G

Claim 0:
1. A system, comprising:
a welding power source including a controller comprising a processor, a user interface, and a memory, wherein the welding power source further includes a voltage feedback circuit including a voltage sensor configured to measure a voltage across a wire electrode and a workpiece and provide real-time voltage data to the controller, and a current feedback circuit including a current sensor configured to measure a current provided to the wire electrode and provide real-time current data to the controller, wherein the welding power source is configured to detect an arc flaring event by calculating a real-time welding arc impedance and comparing the real-time welding arc impedance or a rate of change of the real-time welding arc impedance to a threshold value;
a welding tool comprising a contact tip operably coupled to the welding power source, wherein the welding power source is configured to control a welding output at the contact tip based on detecting the arc flaring event, and generate an arc flaring event warning message based on detecting the arc flaring event; and
a wire feeder configured to supply the wire electrode to the welding tool,
wherein the welding output comprises a plurality of current pulses and the welding power source calculates the real-time welding arc impedance from a voltage measurement and a current measurement made during a 0.2 ms tail end of a current pulse of said plurality of current pulses that immediately precedes a subsequent current pulse of said plurality of current pulses, and
wherein the real-time welding arc impedance is calculated based on an average of voltage and current measurements made during the 0.2 ms tail end of a current pulse.