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TECHNICAL PAPERS

New Swash Plate Damping Model for Hydraulic Axial-Piston Pump

[+] Author and Article Information
X. Zhang, J. Cho, S. S. Nair

Computer Controlled Systems Laboratory, Mechanical and Aerospace Engineering, University of Missouri, Columbia MO 65211

N. D. Manring

Hydraulic Components Research, Technical Center, Building G, Caterpillar, Inc., Peoria, IL 61656

J. Dyn. Sys., Meas., Control 123(3), 463-470 (Nov 12, 1999) (8 pages) doi:10.1115/1.1386789 History: Received November 12, 1999
Copyright © 2001 by ASME
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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, 107 , pp. 220–226.
Zeiger G., and Akers, A., 1986, “Dynamic Analysis of an Axial-Pump Swashplate Control,” Proceedings of the Institution of Mechanical Engineers, 200 No C1, pp. 49–58.
Edge, K. A., and Darling, J., 1986, “Cylinder Pressure Transients in Oil Hydraulic Pumps with Sliding Plate Valves,” Proceedings of the Institution of Mechanical Engineers, Vol. 200 (B1), pp 45–54.
Lu, Y. Z., and Chen, Z. N., 1989, “Measurement and Simulation Model Study of Cylinder Pressure Transition in an Axial-Piston Pump,” Proceedings of the 2nd International Conference on Fluid Power Transmission and Control, International Academic Publishers, Beijing, pp 471–476.
Kim, S. D., Cho, H. S., and Lee, C. O., 1987, “A Parameter Sensitivity Analysis for the Dynamic Model of a Variable Displacement Axial Piston Pump,” Proceedings of the Institution of Mechanical Engineers, Vol. 201, C4, pp. 235–243.
Manring, N. D., and Johnson, R., 1996, “Modeling and Designing a Variable-Displacement Open-Loop Pump,” ASME Journal of Dynamic Systems, Measurement, and Control, 118 , pp. 267–271.
Helgestad, B. O., Foster, K., and Bannister, F. K., 1974, “Pressure Transients in an Axial-Piston Hydraulic Pump,” Proceedings of the Institution of Mechanical Engineers, Vol. 188, pp 189–199.

Figures

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Comparison of reduced order and full nonlinear model step responses (a) Comparison of reduced order and full nonlinear model step responses for general intake/discharge area variation case in Table 1, (Dotted—reduced order model, Eq. (24); Solid—full nonlinear model Eq. 6). (b) Comparison of reduced order and full nonlinear model step responses for constant intake/discharge area variation case (f2=12E-6 m23=0.4105 rad) (Dotted—reduced order model, Eq. (24); Solid—full nonlinear model Eq. (6))
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Swash plate free body diagram
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Discharge/Intake area and pressure profiles (a) Discharge (solid)/Intake (dotted) area variations (b) Pn*, the pressure profile when α̇=0
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Hydraulic axial-piston pump (a) Overall schematic (b) Valve plate geometry and notation

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