Journal of Institute of Control, Robotics and Systems (제어로봇시스템학회논문지)

Institute of Control, Robotics and Systems (제어로봇시스템학회)
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Development of an Assistant Robot for use in Hot Forging Work Sites and Its Performance Evaluations using Electromyographic Signals

열간 단조용 작업보조로봇 개발 및 근전도 신호를 이용한 성능 평가

  • Song, Ji Yeon (Department of Mechanical and Aerospace Engineering and ReCAPT, Gyeongsang National University) ;
  • Kim, Hwang Geun (Department of Mechanical and Aerospace Engineering and ReCAPT, Gyeongsang National University) ;
  • Yoon, Jung Won (Department of Mechanical and Aerospace Engineering and ReCAPT, Gyeongsang National University)
  • 송지연 (경상대학교 기계항공공학부) ;
  • 김황근 (경상대학교 기계항공공학부) ;
  • 윤정원 (경상대학교 기계항공공학부)
  • Received : 2015.02.15
  • Accepted : 2015.03.15
  • Published : 2015.05.01
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Abstract

Hot forging industry workers are prone to encounter several health risks due to lack of automation and poor working environment conditions. These workers particularly suffer from muscle fatigue owing to the constant handling of heavy products during the forging process. Thus we developed an assistant robot for workers who carry out hot forging tasks. The purpose of a robot is to compensate gravity-loads for heavy products. To verify the functionality of a robot, we performed a muscle fatigue analysis using Electromyography (EMG) signals. Four muscles of the upper extremity were chosen to measure muscle activity. And experiment conditions were setup to imitate the hot forging process. Post experimental analysis of the captured muscle activity revealed a reduction in the median frequency of the EMG signals, which means clear fatigue reduction due to a robot's assistance. The developed assist robot with compact and economical components can be efficiently utilized at forging work sites to create better working conditions for operators.

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