DOI QR코드

DOI QR Code

Electromagnetic Design and Performance Evaluation of an MR Valve

MR 밸브의 전자기적 설계와 성능평가

  • 김기한 (부산대학교 대학원 기계공학부) ;
  • 남윤주 (부산대학교 대학원 지능기계공학과) ;
  • 박명관 (부산대학교 기계공학부 및 기계기술 연구소)
  • Published : 2008.03.01

Abstract

This paper presents an electromagnetic design method for magneto-rheological (MR) valves. Since the apparent viscosity of MR fluids is adjusted by applying magnetic fields, the MR valves can control high-level fluid power without any mechanical moving parts. In order to improve the performances of the MR valve, it is important that the magnetic field is effectively supplied to the MR fluid. For the purpose, the magnetic circuit composed with the yoke for forming magnetic flux path, the electromagnetic coil and the MR fluid should be well designed. In order to improve the static characteristic of the MR valve, the length of the magnetic flux path is decreased by removing the unnecessary bulk of the yoke. Also, in order to improve its dynamic and hysteretic characteristics, the magnetic reluctance of the magnetic circuit should be increased by minimizing the cross-sectional area of the yoke through which the magnetic flux passes. After two MR valves, one is a conventional type valve and the other is the proposed one, are designed and fabricated, their performances are evaluated experimentally.

Keywords

Electromagnetic Design;Magneto-Rheological Fluid;MR Valve

References

  1. Phule, P., 2001, 'Magnetorheological (MR) Fluid: Principles and Applications,' Smart Materials Bulletin, No. 2, pp. 7-10 https://doi.org/10.1016/S1471-3918(01)80040-X
  2. Nam, Y. J. and Park, M. K., 2007, 'Performance Evaluation of Two Different Bypass-Type MR Shock Damper,' J. Intell. Mater. Syst. Struct., Vol. 18, pp. 707-718 https://doi.org/10.1177/1045389X06069445
  3. Stelzer, G. J., Schulz, M. J., Kim, J. and Allemagn, J., 2003, 'A Magnetorheological Semi-Active Isolator to Reduce Vibration Transmissibility in Automobiles,' J. Intell. Mater. Syst. Struct., Vol. 14, pp. 743-765 https://doi.org/10.1177/104538903038840
  4. Nam, Y. J., Moon, Y. J. and Park, M. K., 'Performance Improvement of a Rotary MR Fluid Actuator Based On Electromagnetic Design,' J. Intell. Mater. Syst. Struct. Onlinefirst, 10 July 2007, (doi:10.1177/1045389X07079463) https://doi.org/10.1177/1045389X07079463
  5. Lampe, D., Thess, A. and Dotzauer, C., 1998, 'MRF Clutch: Design Considerations and Performance,' Proc. 6th Int. Conf. New Actuators, pp. 449-452
  6. Li, S., Wang, G., Chen, D. and Li, S., 2001, 'New Type Relief Valve Using Magneto-Rheological Fluid' 5th Int. Conf. Fluid Power Transmission and Control, (http://fluid.power.net/techbriefs/hanghzau/2_25.pdf)
  7. Yoshida, K., Takahashi, H., Yokota, S., Kawachi, M. and Edamura, K., 2002, 'A Bellows-Driven Motion Control System Using A Magneto-Rheological Fluid,' Proc. 5th JFPS Int. Symp. Fluid Power, Nara, Japan, Vol. 2, pp. 403-408
  8. Yokota, S., Yoshida, K. and Kondoh, Y., 1999, 'A Pressure Control Valve Using MR Fluid' Proc. 4th JHPS-ISFP, Tokyo, Japan, pp. 377-380
  9. Hirani, H. and Manjunatha, C. S., 2007, 'Performance Evaluation of a Magnetorheological Fluid Variable Valve' Proc. IMECHE, Part D, J. Auto. Eng., Vol. 221, pp. 83-93
  10. Hitchcock, G. H., Gordaninejad, F. and Wang, X., 2002, 'A New By-Pass, Fail-Safe, Magneto-Rheological Fluid Damper' Proc. SPIE Conf. Smart Materials and Structures, San Diego, pp. 345-351
  11. An, J. and Kwon, D. S., 2003, 'Modeling of a Magnetorheological Actuator Including Magnetic Hysteresis,' J. Intell. Mater. Syst. Struct., Vol. 14, pp. 541-550 https://doi.org/10.1177/104538903036506
  12. Yoo, J. H. and Wereley, N. M., 2002, 'Design of a High-Efficiency Magnetorheological Valve' J. Intell. Mater. Syst. Struct., Vol.13, pp. 679-685 https://doi.org/10.1177/1045389X02013010012
  13. Yoo, J. H. and Wereley, N. M., 2004, 'Performance of a Magnetorheological Hydraulic Power Actuator System' J. Intell. Mater. Syst. Struct., Vol. 15, pp. 847-858 https://doi.org/10.1177/1045389X04044536
  14. Li, W. H., Du, H. and Guo, N. Q., 2003, 'Finite Element Analysis and Simulation Evaluation of a Magnetorheological Valve' Int. J. Adv. Manuf. Technol., Vol. 21, pp. 438-445 https://doi.org/10.1007/s001700300051
  15. Ai, H. X., Wang, D. H. and Liao, W. H., 2007, 'Design and Modelling of a Magnetorheological Valve with Both Annular and Radial Flow Paths,' J. Intell. Mater. Syst. Struct., Vol. 17, pp. 327-334 https://doi.org/10.1177/1045389X06055283
  16. Gavin, H., Hoagg, J. and Dobossy, M., 2001, 'Optimal Design of MR Dampers,' Proc. U.S.-Japan Workshop on Smart Structures for Improved Seismic Performance in Urban Regions, Seattle, WA, pp. 225-236
  17. Takesue, N., Asaoka, H. A., Lin, J., Sakaguchi, M., Zhang, G. and Furusho, J., 2000, 'Development and Experiments of Actuator Using MR Fluid,' Proc. IEEE Int. Conf. Industrial Electronics, Control and Instrumentation, pp. 1838-1843
  18. Takesue, N., Furusho, J. and Kiyota, Y., 2004, 'Fast Response MR-Fluid Actuator' JSME Int. Part C, Vol. 47, pp. 783-791 https://doi.org/10.1299/jsmec.47.783
  19. Lord Corporation, 2006, 'MRF-132DG Magneto-Rheological Fluid,' Lord Technical Data
  20. Iskander, M. F., 1992, Electromagnetic Fields and Waves, Prentice Hall