The KSFM Journal of Fluid Machinery (한국유체기계학회 논문집)

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

DOI QR Code

Research for the Effect of Accumulator and the High Frequency-Hydraulic System of Frequency Characteristics by Experimental Method

고주파 유압시스템의 주파수 특성과 축압기 효과의 실험적 연구

  • 박남은 (조선대학교 항공조선공학부 대학원) ;
  • 김재수 (조선대학교 항공조선공학부) ;
  • 김양수 (조선대학교 항공조선공학부 대학원) ;
  • 김종록 (조선대학교 항공조선공학부) ;
  • 노형운 (인천전문대 기계과) ;
  • 전승배 ((주)정광기공) ;
  • 나홍철 ((주)정광기공)
  • Published : 2003.09.01
Download PDF
⟨ Previous Next ⟩

Abstract

Characteristics of the high frequency pulsatile flow have been investigated experimentally to understand the flow phenomena in the hydraulic system. One axis fatigue test bed, which is widely used for automobile field test, is used. Four pressure transducers, an amplifier and a A/D convertor are used to obtain the high frequency pulsatile pressure waveform in hydraulic system. The characteristics of frequency are analyzed by power spectrum method. According to the variations of pump input pressure and actuator acceleration frequency, the pressure is measured with or without an accumulator. The amplitude of pressure with accumulator is very lower than those without accumulator due to absorbing function of accumulator. As the frequency of actuator acceleration is increased, the effect of accumulator become very important to decrease the amplitude of pulsatile pressure waveform with high frequencies.

Keywords

References

  1. Lee, I. Y, Song, S. H, Jung, Y G. and Yang, K. W., 1998, ‘Development of Analyzing Method for Pressure Fluctuations in Oil Hydraulic Pipe Network Including Flexible Hose Element,’ Journal of the Korean Society for Power System Engineering. Vol. 2, No.1, pp. 45-51
  2. Na, G. D., Mo, Y. Y, Yoo, Y. T., Joung, J. C, Kim, J. H, 1998, ‘A Study on the Frequency Response Characteristics of a Laminar Pulsating Flow in a Pipe’ Journal of the Korean Society for Aeronautical and Space Sciences, Vol. 26, No.8
  3. Young, T. Y, Na, G. D., Kim, J. H, 2002, ‘A Characteristics of Pressure Propagation According to Frequency Changes in a Hydraulic Pipeline,’ Journal of the Korean Society of Machine Tool Engineers. Vol. 11, No. 2, pp. 71-79
  4. Yum, M. O., 1982, ‘Characteristic Experiment of Tilting Check Valve for Nuclear Power Plant(II),’ The Korean Society of Mechanical Engineers, Vol. 22, No. 6, pp. 803-812
  5. Miller, J. E., 1987, The Reciprocating Pump, Wiley-interscience
  6. Young, H Y, 1996, ‘Study on Polytropic Processes for Pulsations of an Accumulator,’ Journal of Institute of Industrial Technology of Chang-Won Univ. Vol 10, pp. 239-249
  7. Wylie, E. B., 1993, Fluid Transients in System, Prentice- hall