The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

Korean Society for Fluid machinery (한국유체기계학회)
권호 표지
DOI QR코드

DOI QR Code

Measurement of Dynamic Coefficients of Air Foil Bearing for High Speed Rotor by Using Impact Test

임팩트 테스트를 이용한 초고속 회전체용 공기 포일 베어링의 동특성 계수 측정

  • 박철훈 (한국기계연구원 나노융합.생산시스템연구본부) ;
  • 최상규 (한국기계연구원 나노융합.생산시스템연구본부) ;
  • 함상용 (한국기계연구원 나노융합.생산시스템연구본부)
  • Received : 2010.06.14
  • Accepted : 2010.11.29
  • Published : 2011.02.01
Download PDF
⟨ Previous Next ⟩

Abstract

MTG(Micro turbine generator) operating at 400,000 rpm is under development and the impact test rig to measure the dynamic stiffness and damping coefficient of air foil bearing for high speed rotor is presented in this study. The stiffness and damping coefficient of air foil bearing depending on the rotational speed can be measured easily and effectively by using the simple configuration of impact test rig which is composed of air gun, gap sensors and high speed motor. The estimation results of stiffness and dampling coefficient using least square estimation method is presented as well.

Keywords

References

  1. Isomura, K., Tanaka, S., Togo, S. and Esashi, M.,2005, “Development of high-speed micro-gas bearingsfor three-dimensional micro-turbo machines,” Journalof Micromechanics and Microengineering, Vol. 15, No.9, pp. S222-S227. https://doi.org/10.1088/0960-1317/15/9/S08
  2. Zwyssig, C., Kolar, J. W., Thaler, W. and Vohrer, M.,2005, “Design of a 100W, 500000 rpm Permanent-Magnet Generator for Mesoscale Gas Turbines,”Industry Applications Conference, Vol. 1, pp. 253-260.
  3. 한상조, 박준영, 박무룡, 최범석, 2010, “초소형 가스 터빈 사이클 해석,” 대한기계학회 충청지회 춘계학술대회, pp. 357-358.
  4. 류근, 이용복, 이병수, 김창호, 2004, “터보 방식으로 구동되는 마이크로 파워 시스템의 회전체 동역학적 특성에 관한 연구,” 유체기계 연구개발 발표회 논문집, Vol. 18, No. 2, pp. 109-115.
  5. 이용복, 김태호, 김창호, 이남수, 최동훈, 2002, “범프 포일 베어링들의 동적 계수에 관한 실험적 연구,” 윤활학회지, pp. 42-48.
  6. Qiu, Z. L. and Tieu, A. K., 1997, “Identification ofsixteen force coefficients of two journal bearings fromimpulse responses,” Wear, Vol. 212, No. 2, pp. 206-212. https://doi.org/10.1016/S0043-1648(97)00154-3
  7. 박철훈, 최상규, 함상용, 백선희, 2010, “250k rpm급 초고속 모터용 공기 포일 베어링의 동특성 측정,” 한국정밀공학회 춘계학술대회, pp. 777-778.
  8. Burrows, C.R., and Sahinkaya, M.N., 1981, “Frequency-domainestimation of linearized oil-film coefficients,”ASME Journal of Lubrication Technology, Vol. 104,No. 2, pp. 210-215.

Cited by

  1. Prediction of Power and Efficiency Requirement of Motor/generator for 500W Class Micro Gas Turbine Generator Considering Losses vol.14, pp.5, 2011, https://doi.org/10.5293/kfma..2011.14.5.024
  2. Performance Evaluation of Compressor to Develop 500W Class Ultra-Micro Gas Turbine vol.15, pp.6, 2012, https://doi.org/10.5293/kfma.2012.15.6.051
  3. Study on the Electromagnetic Excitation System for the Measurement of Dynamic Coefficients of Air Foil Bearing for High Speed Rotor vol.16, pp.3, 2013, https://doi.org/10.5293/kfma.2013.16.3.018