Method and apparatus for automatically controlling arc welding

Details Method and apparatus for automatically controlling arc welding Method and apparatus for automatically controlling arc welding

1979-01-22

1981-07-21

Orsino, Jr., Joseph A.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

21912434, 21913001, H04N 718

Patent

active

042801370

ABSTRACT:
Disclosed is a method and apparatus for automatically controlling arc welding, wherein pieces of optical information provided by at least two bands of different wavelengths of light radiated from a weld area being arc-welded under predetermined welding conditions are alternately picked up by an optical device to extract various weld factors representing the actual status of the weld area from these pieces of optical information, and the extracted weld factors representing the actual status of the weld area are compared with the desired values of the weld factors representing the desired status of the weld area to compute the error or errors of the welding conditions, so that the welding conditions can be corrected on the basis of the detected error or errors of the welding conditions, whereby the weld factors can be controlled to the desired values.

REFERENCES:
patent: 2971093 (1961-02-01), Garbuny
patent: 3271558 (1966-09-01), Davis
patent: 3370151 (1968-02-01), Normando
patent: 3526748 (1970-09-01), Rienks
patent: 3532807 (1970-10-01), Webb
patent: 4021840 (1977-05-01), Ellsworth et al.
patent: 4093844 (1978-06-01), Fellure et al.
patent: 4168430 (1979-09-01), Denis et al.
Kudryavtsev et al.,-Regulating Arc Welding Settings by Radiation from the Fusion Zone-Weld Prod., vol. 7, #7, Jul., 1970.

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