Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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A Study on the Quality Estimation of Resistance Spot Welding Using Hidden Markov Model

은닉 마르코프 모델을 이용한 저항 점용접 품질 추정에 관한 연구

  • Published : 2002.12.01
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Abstract

This study is a middle report on the development of intelligent spot welding monitoring technology applicable to the production line. An intelligent algorithm has been developed to predict the quality of welding in real time. We examined whether it is effective or not through the In-Line and the Off-Line tests. The purpose of the present study is to provide a reliable solution which can prevent welding defects in production site. In this study, the process variables, which were monitored in the primary circuit of the welding, are used to estimate the weld quality by Hidden Markov Model(HMM). The primary dynamic resistance patterns are recognized and the quality is estimated in probability method during the welding. We expect that the algorithm proposed in the present study is feasible to the applied in the production sites for the purpose of in-process real time quality monitoring of spot welding.

Keywords

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