Hardware and Signal Processing for a Novel Multi-Lap-Joint Measurement System for Automated Welding Applications
Sprache des Titels:
Englisch
Original Kurzfassung:
This paper presents a radar system for measuring
the position of edges with good electrical conductivity in automated
welding applications. The sensor consists of a frequencymodulated
continuous-wave radar system which operates in the
W-band. To estimate the position of the edge, we focus on
polarimetric scattering effects introduced by discontinuities in
the shape of a conducting plate. In addition to hardware designs,
we propose signal models for single- and multi-step scenarios.
The signal models are calculated using a field simulation tool we
developed. The proposed models were used to derive a novel
position estimation algorithm that allows real-time operation.
Further, the accuracy limits of our concept were investigated
using an analytically derived Cramér-Rao lower bound and
simulations for multi-step scenarios. The simulation results were
verified by measurements. Electromagnetic influences of the
welding arc on the system during operation were also investigated
by measurements.
Sprache der Kurzfassung:
Englisch
Journal:
IEEE Transactions on Instrumentation and Measurement
Forschungs-