Modeling of Digital-Displacement Pump-Motors and Their Application as Hydraulic Drives for Nonuniform Loads-Reference-Cited by-同舟云学术

Modeling of Digital-Displacement Pump-Motors and Their Application as Hydraulic Drives for Nonuniform Loads

Published:1997-06-26 Issue:1 Volume:122 Page:210-215
ISSN:0022-0434
Container-title:Journal of Dynamic Systems, Measurement, and Control
language:en
Short-container-title:

Author:

Ehsan Md.¹,Rampen W. H. S.²,Salter S. H.³

Affiliation:

1. Department of Mechanical Engineering, Bangladesh University of Engineering & Technology (BUET), Dhaka, Bangladesh

2. Artemis Intelligent Power Ltd., Edinburgh, Scotland

3. Department of Mechanical Engineering, University of Edinburgh, Edinburgh, Scotland

Abstract

The digital-displacement pump-motor is a hybrid device, which combines reciprocating hydraulics with micro-processor control, creating a highly integrated machine capable of producing variable flow and power. It is based on the conventional hydraulic piston pump but with actively controlled poppet valves for each cylinder. This allows enabling or disabling on a stroke-by-stroke basis in any desired sequence. Time-domain modeling of the pump-motor system predicts the performance under variable-demand, variable-speed at different control-modes. The advantages of this approach over conventional techniques lie with both the response speed and the inherent energy efficiency. [S0022-0434(00)00801-7]

Publisher

ASME International

Subject

Computer Science Applications,Mechanical Engineering,Instrumentation,Information Systems,Control and Systems Engineering

Link

http://asmedigitalcollection.asme.org/dynamicsystems/article-pdf/122/1/210/5643527/210_1.pdf

Reference9 articles.

1. Ehsan, Md., Rampen, W. H. S, and Salter, S. H, 1996, “Computer Simulation of the Performance of Digital-Displacement Pump-Motors” ASME International Mechanical Engineering Congress and Exposition, FPST 3, pp. 19–24, Atlanta, Nov. 1996.

2. Rampen, W. H. S., Salter, S. H., and Fussey, A., “Constant Pressure Control of the Digital Displacement Pump,” 4th Bath Intn’l Fluid Power Workshop, Fluid Power Systems and Modelling, Bath, Sept. 1991, RSP, pp. 45–62.

3. Rampen, W. H. S., and Salter, S. H., “The Digital Displacement Hydraulic Piston Pump,” Proc. 9th International Symposium on Fluid Power, BHR Group, Cambridge, April 1990, STI, pp. 33–46.

4. Rampen, W. H. S, Almond, J. P., and Salter, S. H, “The Digital Displacement Pump/Motor Operating Cycle: Experimental Results Demonstrating the Fundamental Characteristics,” 7th International Fluid Power Workshop, Bath, 1994, pp. 321–331.

5. Salter, S. H., and Rampen, W. H. S., “The Wedding Cake Multi-Eccentric Radial Piston Hydraulic Machine with Direct Computer Control of Displacement,” Proc. 10th International Conference on Fluid Power, BHR Group, Brugge, April 1993, MEP, pp. 47–64.

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