Intelligent waveform selection for a welding system having particular electrical output characteristics

Patent metadata

Field	Value
Publication number	US-10071434-B2
Application number	US-201213474267-A
Country	US
Kind code	B2
Filing date	May 17, 2012
Priority date	May 17, 2012
Publication date	Sep 11, 2018
Grant date	Sep 11, 2018

Abstract

Systems and methods for selecting a welding output waveform based on characterizing a welding circuit output path with respect to its electrical characteristics. At least one electrical characteristic (e.g., inductance, resistance) of a welding output circuit path connected to a welding power source is determined. A welding output waveform is selected from a plurality of welding output waveforms based on the determined electrical characteristics. As a result, the selected welding output waveform is matched to the welding output circuit path electrical characteristics to provide superior welding performance.

First claim

What is claimed is:

1. A method, said method comprising:
determining two or more electrical characteristics of a welding output circuit path connected to a welding power source, said electrical characteristics including an inductance value and a resistance value; and
selecting a selected welding output waveform from a plurality of welding output waveforms based on said two or more electrical characteristics; and wherein
said selected welding output waveform is compatible with rise and fall time limits of said welding output circuit path based upon said two or more electrical characteristics including the inductance value and the resistance value and
said welding power source applying said selected welding output waveform to said welding output circuit path.

2. The method of claim 1 , wherein
said inductance value and said resistance value of said welding output circuit path are at least in part dependent on a cable in the welding output circuit path.

3. A welding power source comprising a welding output,
wherein said welding power source is configured to determine two or more electrical characteristics of a welding output circuit path connected to said welding output of said welding power source, said electrical characteristics including an inductance value and a resistance value, and
wherein said welding power source is further configured to select a selected welding output waveform from a plurality of welding output waveforms stored in said welding power source in response to said two or more electrical characteristics; and wherein
said selected welding output waveform is compatible with rise and fall time limits of said welding output circuit path based upon said two or more electrical characteristics including the inductance value and the resistance value; and further wherein
said welding power source is further configured to apply said selected welding output waveform to said welding output circuit path connected to said welding output of said welding power source.

4. The welding power source of claim 3 , further comprising
at least one look-up table (LUT) configured to map electrical characteristics to welding output waveforms.

5. The system of claim 3 , wherein
said resistance value and said inductance value of said welding output circuit path are at least in part dependent on a cable in the welding output circuit path.

6. A system comprising:
a welding power source having a welding output, said welding power source configured to store a plurality of welding output waveforms and select one of said plurality of welding output waveforms based on two or more electrical characteristics of a welding output circuit path connected to said welding output, said electrical characteristics including an inductance value and a resistance value;
said welding output circuit path operatively connected to said welding output; and
a welding output analyzer operatively connected to one of said welding output circuit path or said welding power source, wherein said welding output analyzer is configured to monitor welding output electrical parameters applied to said welding output circuit path by said welding power source, determine at least one of said two or more electrical characteristics of said welding output circuit path based on said welding output electrical parameters, and provide said at least one of said two or more electrical characteristics to said welding power source; and wherein
said selected welding output waveform is compatible with rise and fall time limits of said welding output circuit path based upon said two or more electrical characteristics including the inductance value and the resistance value; and further wherein
said welding power source includes at least one look-up table configured to map said at least one of said two or more electrical characteristics to welding output waveforms.

7. The system of claim 6 , wherein
said welding output circuit path includes one or more of a welding cable, a welding tool, an electrode, a workpiece or a workpiece connector.

8. The system of claim 7 , wherein
said welding output circuit path runs from the welding power source through the welding cable to the welding tool and the electrode, through the workpiece to the workpiece connector, and back through the welding cable to the welding power source.

9. The system of claim 6 , wherein
said welding output electrical parameters include at least one regulated welding output current resulting in a welding output voltage.

10. The system of claim 6 , wherein
said welding output electrical parameters include at least one regulated welding output voltage resulting in a welding output current.

11. The system of claim 6 , wherein
said resistance value and said inductance value of said welding output circuit path are at least in part dependent on a cable in the welding output circuit path.

12. A system comprising:
means for monitoring welding output electrical parameters applied to a welding output circuit path by a welding power source;
means for determining two or more electrical characteristics of said welding output circuit path based on said welding output electrical parameters; and
means for selecting a selected welding output waveform, to be applied to said welding output circuit path by said welding power source, in response to said two or more electrical characteristics; and wherein
said selected welding output waveform is compatible with rise and fall time limits of said welding output circuit path based upon said two or more electrical characteristics including an inductance value and a resistance value.

Assignees

• Chantry Bruce John
• Daniel Joseph
• Kooken Todd
• Lincoln Global Inc

Inventors

• Chantry Bruce John
• Daniel Joseph
• Kooken Todd

Classifications

• B23K9/0953

  using computing means · CPC title

• B23K9/10

  Other electric circuits therefor; Protective circuits; Remote controls · CPC title

• B23K9/09 Primary

  Arrangements or circuits for arc welding with pulsed current or voltage · CPC title

• B23K9/1056

  by using digital means (B23K9/1068 takes precedence) · CPC title

• B23K9/0956

  using sensing means, e.g. optical · CPC title