Journal of Welding and Joining

The Korean Welding and Joining Society (대한용접접합학회)
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Optimization of Fuzzy Controller for Constant Current of Inverter DC Resistance Spot Welding Using Genetic Algorithm

유전알고리즘을 이용한 인버터 DC 저항점용접에서의 정전류퍼지제어기 최적화

  • Yu, Ji-Young (Dept. of Mechanical Engineering, Hanyang University) ;
  • Yun, Sang-Man (Dept. of Mechanical Engineering, Hanyang University) ;
  • Rhee, Se-Hun (Div. of Mechanical Engineering, Hanyang University)
  • 유지영 (한양대학교 대학원 기계공학과) ;
  • 윤상만 (한양대학교 대학원 기계공학과) ;
  • 이세헌 (한양대학교 기계공학과)
  • Received : 2010.08.11
  • Accepted : 2010.10.05
  • Published : 2010.10.31
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Abstract

Inverter DC resistance spot welding process has been very widely used for joining such as automotive body sheet metal. Because the lobe area of DC welding is larger than AC welding and DC welding has low electrode wear. So the use of Inverter DC resistance spot welding process has been further increased. And the application of high tensile steel is growing for light weight vehicle. To improve the weldability of high strength steel, the development of Inverter DC resistance spot welding system is more conducted. However, Inverter DC resistance spot welding system has a few problems. Current waveform is unstable and the expulsion has been occurred by characteristics of steel. In this study, inverter DC resistance spot welding system was made. And Fuzzy control algorithm was applied for constant current. The genetic algorithm was applied to optimize the fuzzy scaling factors, in order to optimize the fuzzy control.

Keywords

References

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Cited by

  1. New methods of resistance spot welding using reference waveforms of welding power vol.17, pp.10, 2016, https://doi.org/10.1007/s12541-016-0156-z
  2. 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