OBSERVATION AND DIGITAL CONTROL OF WELD POOL IN PULSED MIG WELDING.

被引：0
|
作者：
Ohshima, Kenji [1 ]
Morita, Masaki [1 ]
Fujii, Kazuo [1 ]
Yamamoto, Mitsuyoshi [1 ]
Kubota, Takefumi [1 ]
机构：
[1] Saitama Univ, Jpn, Saitama Univ, Jpn
来源：
Yosetsu Gakkai Ronbunshu/Quarterly Journal of the Japan Welding Society | 1987年 / 5卷 / 03期
关键词：
CONTROL SYSTEMS; DIGITAL - Observability - IMAGE PROCESSING - ROBOTS; INDUSTRIAL - Vision Systems - SEMICONDUCTOR DEVICES; CHARGE COUPLED - TELEVISION EQUIPMENT - Cameras;
D O I：
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中图分类号：
学科分类号：
摘要：
It is important in automatic arc welding research to control the weld pool shape against the disturbance and the variation of system parameters. For this purpose it is useful to control the weld pool width. A basic visual robot is proposed for observing and controlling the weld pool shape by using the pulsed current. The weld pool is recognized by the brightness of the weld pool and its outskirts. A personal computer calculates the weld pool width and area in real time. The authors study the transient response of the weld pool width and area. The welding current is determined to get a desired response of the weld pool. It is shown how to determine the digital controller characteristic. Small variations of system parameter during operation caused by the change in the base metal thickness, heat conductivity, temperature rise are allowed while the prescribed control performance is maintained.
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页码：304 / 311
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