변속제어 알고리즘을 적용한 휠로더 자동변속기 특성 해석

Characteristics Analysis of Automatic Transmission for the Wheel-Loader with Shift Control Algorithm

  • 오주영 (한양대학교 대학원 기계설계.메카트로닉스공학과) ;
  • 윤웅권 (로보티즈(주)) ;
  • 박영준 (한국기계연구원 시스템엔지니어링 연구본부) ;
  • 이근호 (한국기계연구원 시스템엔지니어링 연구본부) ;
  • 송창섭 (한양대학교 기계공학부)
  • 투고 : 2011.05.30
  • 심사 : 2011.07.07
  • 발행 : 2011.10.15

초록

Wheel-loader is a construction vehicle for uploading soil or sand into truck and transportation of materials, which requires large driving power and high rotational speed. To improve the working efficiency, the operator has to shift gears and control levers for bucket & boom simultaneously. Therefore, the automatic transmission has been introduced to enhance operator's convenience and enable effective operation. To develop the automatic transmission for the wheel-loader, technologies such as gears and a clutch-pack design and shift algorithm are required for improvement of shift quality. In this paper, the shift algorithm for the wheel-loader was developed and its shift pattern was analyzed. As the shift control is affected by the pressure profile for the clutch control, the shift quality depending on the pressure profile has been evaluated using experiment and simulation model analysis.

키워드

참고문헌

  1. Jung, G. H., Shin, S. H., Lee, S. I., and Kim, H. J., 2006, "A Development of TCU Analyzer for Wheel Loader Automatic Transmission," Proc. of KSAE Autumn Conference, pp. 1405-1410.
  2. Yun, U. K., 2008, Analysis of the Wheel Loader Powertrain System Applied by Shift Control Algorithm, A Thesis for a Degree of Master, Hanyang University, Republic of Korea.
  3. Oh, J. Y., and Song, C. S., 2009, "Development of Automatic Transmission Model of Wheel-loader for Hardware in the Loop Simulation," Journal of The Research Institute of Industrial Sciences, Vol. 58, No. 1, pp. 59-65.
  4. Hyundai-motor, 1995, Design Theory of Automatic Transmission, Hyundai-motor Press.
  5. Oh, J. Y., Lee, G. H., and Song, C. S., 2009, "The Hydraulic System Modeling and Analysis of the Clutch Direct Control of an Automatic Transmission for a Forklift Truck," KSPE, Vol. 26, No. 1, pp. 112 -119.
  6. Kwon, S. K., Choi, S. Y., Kwon, G. R., and Han, S. W.,2009, "Shifting Control Method for Automatic Transmission of PSD-Axle Forklift", Journal of the Korean Society of Machine Tool Engineers, Vol. 18, No. 6, pp. 565-575.
  7. Kim, D. G., Park, H., and Kang, S. I., 2004, "A Study on the Shifting Shock of the Automatic Transmission in Tracked Vehicles," Transactions of the Korean Society of Machine Tool Engineers, Vol. 13, No. 1, pp. 100-106.
  8. MSC. Easy5, 2002, Ricardo Powertrain Library User Guide, MSC.software.
  9. Yun, U. K., Lee, G. H., Lee, J. H., Jung, G. H., and Song, C. S., 2007, "The Shift Control Algorithm Modeling and Analysis of Automatic Transmission for Wheel Loader," Proc. of KSPE Spring Conference, pp. 131-132.