An infrared visual sensing detection approach for swing arc narrow gap weld deviation

The present work develops a weld deviation detection system based on infrared visual sensing for swing arc narrow gap weld tracking, proposes a local pattern recognition (LPR) algorithm to detect groove edge position, and experimentally investigates their adaptabilities. This approach captures welding image synchronously with the base current period of pulsed arc as the arc swings to stay at groove sidewall, and extracts weld deviation feature...