DocumentCode :
801108
Title :
A Microprocessor-Based Electrode Movement Controller for Spot Weld Quality Assurance
Author :
Cho, Hyung Suck ; Chun, D.W.
Author_Institution :
Department of Production Engineering, Korea Advanced Institute of Science and Technology, Seoul, Korea.
Issue :
3
fYear :
1985
Firstpage :
234
Lastpage :
238
Abstract :
Quality assurance has been of a great concern in the process of resistance spot welding, since considerable variation in the weld quality often arises even when the machine variables are held constant. In this paper a new microprocessor-based control method is developed to obtain uniform weld quality regardless of the changing welding environments. The control system utilizes a proportional (P) control algorithm, incorporating with the electrode movement as a feedback variable. The controller generates the welding control current so as to track a desired trace of the electrode movement (reference electrode movement curve) throughout weld cycle. A series of experiments was performed to evaluate the performance of this control method. The results show that, as a result of the electrode movement tracking, weld strengths of all the weldments approach to a desired strength level.
Keywords :
Control systems; Electric variables control; Electrodes; Feedback; Performance evaluation; Proportional control; Quality assurance; Shape control; Spot welding; Tracking;
fLanguage :
English
Journal_Title :
Industrial Electronics, IEEE Transactions on
Publisher :
ieee
ISSN :
0278-0046
Type :
jour
DOI :
10.1109/TIE.1985.350164
Filename :
4158626
Link To Document :
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