Journal of Drive and Control (드라이브 ㆍ 컨트롤)

The Korean Society for Fluid Power and Construction Equipment (유공압건설기계학회)
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Study on Bandwidth Frequency of Servovalve based on Metering Cylinder

실린더를 이용한 서보 밸브 대역폭 주파수의 측정에 관한 연구

  • Kim, S.D. (Department of Mechanical System Engineering, Kumoh National Institute of Technology) ;
  • An, Wen-Long (School of Construction Machinery, Chang'an university) ;
  • Jeon, S.H. (Department of Mechanical System Engineering, Kumoh National Institute of Technology)
  • Received : 2015.08.10
  • Accepted : 2015.09.07
  • Published : 2015.09.01
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Abstract

In this study, a metering cylinder was constructed, and the velocity obtained from the linear velocity transducer (LVT) of the cylinder piston was used to evaluate the dynamic performance of an electro-hydraulic servovalve. Frequency response experiments involving the spool displacement and piston velocity (LVT signal) were conducted with different input signal amplitudes, hydraulic pipe diameters, and supply pressures. The spool displacement signal accurately reflected the performance of the servovalve. Meanwhile, the -3 dB bandwidth frequency of the LVT signal was similar to the spool displacement signal, except for a small-amplitude input signal, and the $-90^{\circ}$ phase lag bandwidth frequency showed some differences.

Keywords

References

  1. ISO 10770-1 Hydraulic fluid power-Electrically modulated hydraulic control valves - Part 1: Test methods for four-way directional flow control valves, 1998.
  2. H. E. Merritt, Hydraulic Control Systems, John Wiley & Sons, New York . Chichester. Brisbane . Toronto, 1966.
  3. Wikipedia, The Free Encyclopedia, https://en.wikipedia.org/wiki/PEEK
  4. D. Kemmish, "Update on the Technology and Applications of Poly Aryl Ether Ketones", ISBN 978-1-84735-408-2, 2010.
  5. Material Properties Data: Poly ether etherketone (PEEK), www.makeitfrom.com
  6. K. Ogata, Modern Control Engineering, Prentice-Hall, Inc., Englewood Cliffs, N.J., 1970
  7. M. Rabie, Fluid Power Engineering, McGraw-Hill Professional, 2009.
  8. D-Y. Tian, Technology of Electro hydraulic Servovalve, Aviation Industry Press, Beijing, 2008.
  9. S. D. Kim, S. H. Jeon, and K. H. Jin, "Simulation Study on the Phase Lag Characteristics of Servo valve," Proceedings of the KSFC 2014 Spring Conference, 2014.
  10. J. Pan, "The Frequency Bandwidth in AGC System Limited by Rated Frequency of Oil Cylinder" Iron and Steel, 1985.
  11. Y.-B. Liu, "Research on Hydraulic Inherent Frequency of Cylinder," Coal and Mine Machinery, 2013.
  12. S. Li and Y. Song, "Dynamic Response of a Hydraulic Servo-Valve Torque Motor with Magnetic Fluids," Mechatronics, 2006.
  13. S. Wu, Z. Jiao, L. Yan, R. Zhang, J. Yu, and C.-Y. Chen, "Development of a Direct-Drive Servo Valve with High-Frequency Voice Coil Motor and Advanced Digital Control," ASME Transactions on Mechatronics, 2014.
  14. J. Y. Alaydi, "Modeling and Simulation of High-Performance Symmetrical Linear Actuator," International Journal of Scientific & Engineering Research, Volume 3, Issue August 2012.

Cited by

  1. 미터링 오리피스 압력 진폭을 이용한 방향제어밸브 대역폭 주파수에 관한 연구 vol.14, pp.2, 2015, https://doi.org/10.7839/ksfc.2017.14.2.001