NDLI: Weld seams detection and recognition for robotic arc-welding through ultrasonic sensors

Content Provider	IEEE Xplore Digital Library
Author	Bastos, T.F. Martin, J.M. Calderon, L. Ceres, R.
Copyright Year	1994
Description	Author affiliation: Dept. de Engenharia Mecanica, Escola Politecnica da Univ. de Sao Paulo, Brazil (Bastos, T.F.)
Abstract	In robotic arc welding, sensors must be used to detect the position and orientation of a weld seam and determine its shape in order to carry out the weld parameter control. Useful measurements are the seam width and the volume of the seam that must be filled. With these measurements it is possible to set the welding parameters for each condition. In this paper an automatic seam detection and recognition system interfaced to a robot that uses ultrasonic sensors for obtaining the seam position and orientation, and its geometrical features, is described. The echo signals are digitized and through an analytical method the echo envelope and the moment of the arrival of the echo are precisely calculated. Echo amplitude is obtained searching the maximum of its envelope, and the range measurement is obtained known the starting time of the echo.
Starting Page	310
Ending Page	315
File Size	545346
Page Count	6
File Format	PDF
ISBN	0780319613
DOI	10.1109/ISIE.1994.333099
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1994-05-25
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Welding Robot sensing systems Shape control Ultrasonic variables measurement Automatic control Volume measurement Robotics and automation Sensor phenomena and characterization Sensor systems Signal analysis
Content Type	Text
Resource Type	Article

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