A Proportional-Integral Controller for Resistance Spot Welding Using Nugget Expansion

作     者：Chang, H. S. Cho, Y. J. Choi, S. G. Cho, H. S. 

作者机构：Myong Ji Univ Dept Engn Mech Yongin Kyung Gi South Korea Daewoo Shipbldg & Heavy Machinery LTD Ok Po Kyungnam South Korea Hyundai Elect Ind Co LTD Seoul South Korea Korea Adv Inst Sci & Technol Dept Prod Engn Seoul 131 South Korea 

出 版 物：《JOURNAL OF DYNAMIC SYSTEMS MEASUREMENT AND CONTROL-TRANSACTIONS OF THE ASME》 (美国机械工程师学会汇刊: 动力系统、测量与控制杂志)

年 卷 期：1989年第111卷第2期

页      面：332-336页

核心收录：

学科分类：12[管理学] 1201[管理学-管理科学与工程(可授管理学、工学学位)] 08[工学] 0804[工学-仪器科学与技术] 0811[工学-控制科学与工程] 

主　　题：Control equipment Welding Electrodes Wear Feedback Signals Control algorithms 

摘      要：An electrode wear has been found to cause considerable quality variation in the process of resistance spot welding. This paper presents a study on the electrode wear growth and develops a microprocessor-based feedback controller that can compensate weld quality variation due to electrode deterioration. The controller developed in this study utilizes a PI control algorithm, incorporating the electrode movement as a feedback signal. A series of experiments was performed to clarify the wear growth phenomenon and to evaluate the performance of the controller. The experimental results show that the electrode wear can significantly cause quality deterioration, but this can be effectively compensated via application of this proposed control technique.