Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Study of the Constant Current Fuzzy Control System Design using CRS Algorithm during Inverter DC Resistance Spot Welding Process

인버터 DC 저항점용접 공정에서 CRS 알고리즘을 이용한 정전류 퍼지 제어시스템 설계에 관한 연구

  • 박형진 (한양대학교 대학원 기계공학과) ;
  • 박평원 (한양대학교 대학원 기계공학과) ;
  • 유지영 (한양대학교 대학원 기계공학과) ;
  • 김동철 (한국생산기술연구원) ;
  • 강문진 (한국생산기술연구원) ;
  • 이세헌 (한양대학교 기계공학과)
  • Received : 2010.08.30
  • Accepted : 2010.12.08
  • Published : 2010.12.31
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Abstract

The purpose of this study is to propose a method to decide near-optimal settings of the constant current fuzzy control parameters using a controlled random search. This method tries to find the near-optimal settings of the constant current fuzzy control parameters through experiments. It has an advantage of being able to carry out searches in the search domain which includes some irregular points. The method suggested in this study was used to determine the fuzzy control parameters by which the desired welding current were formed during inverter DC resistance spot welding. The output variable was the ITAE (integral of time multiplied by the absolute error). This output variable was determined according to the input variables, which are the GE, GDE, and GDU. This study described how to obtained near-optimal welding current condition over a wide search space conducting a relatively small number of experiments.

Keywords

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  1. Development of fuzzy controller for inverter DC resistance spot welding using system identification vol.31, pp.8, 2017, https://doi.org/10.1007/s12206-017-0743-7