Sidewall-matching adaptive control system for welding
US4477713A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 9, 1982 |
| Grant date | Oct 16, 1984 |
| Priority date | — |
| Expiry date | Jul 9, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23K9/0216
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
An adaptive control system for welding which senses the lateral profile of a weld joint while the welding electrode moves laterally across the joint, compares a first portion of the sensed lateral profile to a second portion of the sensed lateral profile, and then adjusts a welding parameter, such as the center of oscillation for tracking, the width of oscillation, and constant fill control, in response to the results of the comparison. One disclosed signal processing technique matches an average of data samples for the left portion of the weld seam to an average of data samples for the right portion. Another disclosed technique involves comparing an integrated signal corresponding to the leftward portion of the sensed lateral profile to an integrated signal corresponding to the rightward portion. Another disclosed technique involves comparing an integrated sensed profile signal to a predetermined reference value which is based upon a reference signal. The reference signal comprises data representative of the prior history of the weld joint. The disclosed embodiments employ programmed microprocessors to provide horizontal cross-seam control and process the arc signal to remove unde…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.