INDUSTRIAL FAULT DETECTION AND ARC STABILITY MEASUREMENT USING WELDING SIGNATURES

摘要

The use of signature images for on-line analysis of arc welding electrical data in industrial applications is described. Welding signature images are data objects or structures that can be manipulated to yield on-line information about welding processes. Although numerically intensive mathematical processing is required, this is hidden from the end-user. Arc stability is gauged by an inner product comparison of an on-line signature image with the immediately preceding signatures. Similarly, welding quality is gauged by an inner product comparison of a reference signature image with an on-line signature image, and welding faults can be detected. Industrial applications including applications where conditions vary during a weld are described.