DYNAMIC MODELLING AND PARAMETRIC STUDIES OF AN INDEXING VALVE PLATE PUMP

Authors

  • Junhee Cho Samsung Electronics Co. Ltd., Suwon City, Kyunggi Do, 429-854, Korea
  • Xiaoping Zhang MEMS CAD & Design Engineer, Intpax Co. Ltd., 6 Results Way, Cupertino, CA 95014, USA
  • Noah D. Manring Mechanical and Aerospace Engineering Department, University of Missouri - Columbia, Columbia MO 65211, USA
  • Satish S. Nair Mechanical and Aerospace Engineering Department, University of Missouri - Columbia, Columbia MO 65211, USA

Keywords:

swash-plate, axial piston pump, indexing valve plate, pressure carry-over

Abstract

The swash-plate in a variable displacement pump experiences very large forces and moments that try to dislocate its position; therefore, a large device is required for adequate control. In this paper, the dynamics of an alternative pump design using an indexing valve plate to position the swash-plate are reported. The indexing valve plate design is aimed at controlling the pressure transition for a piston, which is moving from a high-pressure port to a low-pressure port. In this paper, the governing equations for the pump are derived and the detailed open-loop and parametric studies, which are necessary for understanding the overall dynamic characteristics of the pump, are reported. Also, full nonlinear and simplified modelling approaches for the system are compared.

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Author Biographies

Junhee Cho, Samsung Electronics Co. Ltd., Suwon City, Kyunggi Do, 429-854, Korea

Junhee Cho Ph. D. Degree of Mechanical Engineering at the University of Missouri – Columbia, USA, 2000. Currently Employee at the Samsung Electronics Co. Ltd., Korea.

Xiaoping Zhang, MEMS CAD & Design Engineer, Intpax Co. Ltd., 6 Results Way, Cupertino, CA 95014, USA

Xiaoping Zhang Ph.D. in Mechanical and Aerospace Engineer-ing in May 2001 from University of Missouri − Columbia, USA. M.S. degree in Automatic Control Engineering in 1994 from Beijing University of Aeronautics and Astronautics at China. Currently working as a MEMS engi-neer in Intpax Inc. at the Silicon Valley, USA.

Noah D. Manring, Mechanical and Aerospace Engineering Department, University of Missouri - Columbia, Columbia MO 65211, USA

Noah D. Manring Associate Professor of the Department of Mechanical and Aerospace Engineering at the University of Missouri – Columbia, USA.

Satish S. Nair, Mechanical and Aerospace Engineering Department, University of Missouri - Columbia, Columbia MO 65211, USA

Satish S. Nair Professor of the Department of Mechanical and Aerospace Engineering and Associate Dean of Research for the College of Engineer-ing at the University of Missouri – Columbia, USA.

References

Zeiger, G., and Akers, A. 1985. Torque on the Swash-plate of an Axial Piston Pump. ASME Journal of Dynamic Systems, Measurement, and Control, Vol. 107, pp. 220-226.

Schoenau, G., Burton, R., and Kayanagh, G. 1990. Dynamic Analysis of a Variable Displacement Pump. ASME Journal of Dynamic Systems, Meas-urement, and Control, Vol. 112, pp. 122-132.

Yamaguchi, A., and Ishikawa, T. 1979. Characteris-tics of Displacement Control Mechanisms in Axial Piston Pumps. Japanese Society of Mechanical En-gineers, Vol. 22, No. 165, pp. 356-361.

Manring, N. 1998. The Torque on the Input Shaft of an Axial-Piston Swash-Plate Type Hydrostatic Pump. ASME Journal of Dynamic Systems, Meas-urement, and Control, Vol. 120, pp. 57-62.

Kim, S., Cho, H., and Lee, C. 1987. A Parameter Sen-sitivity Analysis for the Dynamic Model of a Varia-ble Displacement Axial Piston Pump. Proceedings of the Institution of Mechanical Engineers, Vol. 201, No. C4, pp.235-243.

Cho, J., Zhang, X., Nair, S., and Manring, N. 1999. Dynamic Modeling of an Indexing Valve Plate Pump. Proceedings of the International Mechanical Engineering Congress and Exposition, Nashville, Tennessee.

Zhang, X., Cho, J., Nair, S., and Manring, N. 2000. New Swash-Plate Damping Model for Hydraulic Axial-Piston Pump. ASME Journal of Dynamic Sys-tems, Measurement, and Control, v123, pp 463-470.

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Published

2002-12-01

How to Cite

Cho, J., Zhang, X., Manring, N. D., & Nair, S. S. (2002). DYNAMIC MODELLING AND PARAMETRIC STUDIES OF AN INDEXING VALVE PLATE PUMP. International Journal of Fluid Power, 3(3), 37–48. Retrieved from https://journals.riverpublishers.com/index.php/IJFP/article/view/620

Issue

2002: Vol 03 Iss 3

Section

Original Article

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