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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

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.

Keywords

References

  1. http://www.fanuc.co.jp/eindex.htm
  2. http://www.kuka.com/
  3. S. H. Jung and J. H. Lee, "Development on unmanned automated system at hot Forging work," Journal of the Korean Society of Manufacturing Process Engineers, vol. 12, no. 5, pp. 163-169, Oct. 2013.
  4. J. J. Kim, K. Kim, S. H. Shin, C. H. Yu, G. Y. Jeong, S. Y. Oh, and T. K. Kwon, "Evaluation of electronic pedal in commercial vehicles using physiology analysis of electromyography," Journal of the Korean Society for Precision Engineering, vol. 28, no. 12, pp. 1434-1440, 2011.
  5. Y. S. Lee, Y. U. Nam, and S. J. Park, "The use of electromyography for fatigue evaluation of automotive seats," Conference proceedings of Ergonomics Society of Korea, vol. 1, pp. 10-16, 1997.
  6. http://www.smckorea.co.kr/
  7. J. B. Song and Y. Ishida, "A robust sliding mode control for pneumatic servo systems," International Journal of Engineering Science, vol. 35, no. 8, pp. 771-723, Jun. 1997.
  8. J. W. Yoon, J. H. Ryu, and K. B. Lim, "Reconfigurable ankle rehabilitation robot for various exercises" Journal of Robotic Systems, vol. 22, no. S1, pp. S15-S33, Sep. 2006. https://doi.org/10.1002/rob.20150
  9. J. W. Yoon, A. Manurung, and G. S. Kim, "Impedance control of a small treadmill with sonar sensors for automatic speed adaptation," International Journal of Control, Automation and Systems, vol. 12, no. 6, pp. 1323-1335, Dec. 2014. https://doi.org/10.1007/s12555-013-0241-3
  10. J. Y. Kim, J. S. Park, and Y. J. Cho, "Biomechanical measuring techniques for evaluation of workload," Jounal of the Ergonomics Society of Korea (in Korean), vol. 29, no. 4, pp. 445-453, Aug. 2010. https://doi.org/10.5143/JESK.2010.29.4.445
  11. S. Y. Hong, S. H. Lee, H. R. Yoon, and S. H. Cho, "The study of muscle fatigue index searching in terms of median frequency analysis of EMG signals during isotonic exercise," Journal of Biomedical Engineering Research (in Korean), vol. 24, no. 3, pp. 175-181, Jun. 2003.
  12. S. S. Lee, J. W. Go, J. H. Jang, W. Y. Park, and K. Y. Lee, "Relationship between endurance times and frequency parameters in suface EMG during isotonic contraction exercises," Journal of Biomedical Engineering Research (in Korean), vol. 33, no. 3, pp. 135-140, Sep. 2012. https://doi.org/10.9718/JBER.2012.33.3.135
  13. J. I. Won, S. H. Cho, C. H. Yi, O. Y. Kwon, Y. H. Lee, and J. M. Park, "Characteristics of the fatigue index in EMG power spectrum analysis during isokinetic exercise," Physical Therapy Korea (in Korean), vol. 8, no. 3, pp. 11-26, Sep. 2001.
  14. Y. K. Kong, D. M. Kim, S. J. Lee, J. H. Lee, Y. H. Lee, K. S. Lee, and S. T. Son, "Evaluation of the effects of lower-limb postures on the subjective discomfort, heart rate and EMGs of lower extremity muscles," Journal of the Ergonomics Society of Korea (in Korean), vol. 28, no. 1, pp. 9-19, Feb. 2009. https://doi.org/10.5143/JESK.2009.28.1.009
  15. H. Y. Jang, Y. G. Lee, J. H. Jang, T. S. Kim, S. J. Hong, C. S. Han, J. S. Han, and J. Y. Ahn, "A study on upper extremity muscle fatigue changes of train driver," Journal of the Korean Society for Railway (in Korean), vol. 10, no. 5, pp. 576-581, Oct. 2007.
  16. J. W. Yoon, M. R. Afzal, S. H. Pyo, and M. K. Oh, "A balance training system using a haptic device and its evaluations," Journal of Institute of Control, Robotics and Systems (in Korean), vol. 20, no. 9, pp. 971-976, Sep. 2014. https://doi.org/10.5302/J.ICROS.2014.14.0007
  17. H. J. Keselman, C. J. Huberty, L. M. Lix, R. A. Olejnik, R. A. Cribbie, B. Donohue, R. K. Kowalchuk, L. L. Lowman, M. D. Petosky, and J. C. Keselman, "Statistical practices of educational researchers: An analysis of their ANOVA, MANOVA, and ANCOVA analyses," Review of Educational Research, vol. 68, no. 3, pp. 350-386, 1998. https://doi.org/10.3102/00346543068003350