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TECHNICAL PAPERS

An Investigation Into the Characteristics of a Two Dimensional “2D” Flow Control Valve

[+] Author and Article Information
J. Ruan

Department of Mechanical Engineering, Zhejiang University of Technology, Hangzhou 310014, P. R. Chinae-mail: wxmin@mail.hz.zj.cn

R. Burton, P. Ukrainetz

Department of Mechanical Engineering, University of Saskatchewan, 57 Campus Drive, Saskatoon, Saskatchewan, Canada, S7N 5A9e-mail: burton@engr.usask.ca1

J. Dyn. Sys., Meas., Control 124(1), 214-220 (Mar 22, 2001) (7 pages) doi:10.1115/1.1433480 History: Received March 22, 2001
Copyright © 2002 by ASME
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References

Merritt, H. E., 1967, Hydraulic Control Systems, J. Wiley, New York.
Arafa,  H. A., and Rizk,  1987, “Identification and Modeling of some Electrohydraulic Servo Valve Nonlinearities,” Proc. Inst. Mech. Eng., 201, pp. 23–31.
Leu, M. C., et al., 1985, “Application of Optimization Theory to the Design of Torque Motors,” Paper 85-DET-98, Presented at the ASME Design Engineering Division Conference, pp. 78–86.
Li, H. R., 1981, Electro-hydraulic Control Systems, National Defense Press.
Ramachandran, S., Ukrainetz, P. R., and Nikiforuk P. N., 1985. “Digital Flow Control Valve-an Evaluation,” Proceedings of International Conference on Fluid Power, Hangzhou, China, pp. 508–512.
Yu, J., et al., 1997, “Simulation Study of an Electro-hydraulic Digital Compound Valve,” Proceedings of the 4th International Conference on Fluid Power Transmission and Control, Hangzhou, P. R. China, pp. 165–168.
Xu, Y. M., and Ruan, J., 1989, “Study of a New Type of Electro-pneumatic Digital Pressure Valve,” Proceedings of First Japanese conference on Fluid Power Control and Measurement, Tokyo, pp. 107–112.
Ruan, J., and Burton R. T., 1999, “Direct Digital Control of a 2D Directional Valve,” Proceedings of Sixth Scandinavian Conference on Fluid Power, Tampere, Finland, May, Vol. 2, pp. 135–148.
Ruan,  J., Ukrainetz,  P. R., and Burton,  R., 2000, “Frequency Domain Modeling and Identification of 2D Digital Servo Valve,” International Journal of Fluid Power, 1, pp. 49–58.
Wang, Y., et al., 1977, Mathematics Handbook, Mass Education Press, pp. 37.

Figures

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Assembly of the pilot controlled valve
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Geometric position between the hole and spiral groove
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Flow chart of the pilot controlled valve
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Experimental assembly for measuring the mechanical stiffness of the spool
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Mechanical stiffness of the spool
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Measurement of leakage from the crescent overlap area
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Leakage as a function of different overlap sizes
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Arrangement for the testing of step response
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Step response of spool under different overlap size
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Response time under different system pressures
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Response time under different step magnitudes
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Effect of the depth of the left spool chamber, Lν, on the step response
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Flow between hole A or B and spiral groove

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