THE TALE OF THE HIDDEN SHAFT

Authors

  • Luca G. Zarotti Institute for Agricultural and Earthmoving Machinery of the Italian National Research Council, Ferrara, Italy

Keywords:

fluid power, volumetric machines, simulation, energy

Abstract

The paper addresses the combination of two or more volumetric machines (pump/motor) connected by a shaft without any external links, defined here by as CSU (Cross Shaft Unit). In the first part, the CSUs are classified in three groups (Type A, B and C) to discuss their general characteristics and field of application. In the second part, the focus is put on the Type C units, i.e. the so called rotational regenerative units, by analyzing their steady state and dynamic performance in a simulation environment to demonstrate the use of a model of the pump/motor losses and a tentative control system.

Downloads

Download data is not yet available.

Author Biography

Luca G. Zarotti, Institute for Agricultural and Earthmoving Machinery of the Italian National Research Council, Ferrara, Italy

Luca G. Zarotti Born on November 20th 1945 in Parma, he received the Degree in Aeronautical Engineering at the Polytechnic Institute of Torino (1970). In 1971 he joined the Institute for Agricultural and Earthmoving Machines of the National Research Council of Italy (CNR), where he is still working. He was Director of the same Institute from 2002 to 2009. He had in charge the fluid power course at the Polytechnic Institute of Torino (from 1979 to 1982) and the University of Modena & Reggio E. (from 1996 to 1999). Currently, he is teaching fluid power modeling at the University of Ferrara (from 2002). His research interests cover various aspects of hydrostatic locomotion, displacement control of pumps and motors, load sensing and flow sharing systems for mobile applications. Besides a number of papers and articles, he is the author of three monographs on fluid power fluids (2006), fluid power circuits (2006 and 2010) and hydrostatic transmissions (2010).

References

Doebelin, E. O. 1985. Control System Principles and

Design, John Wiley & Sons, pp. 552 - 560.

Feng, J., Zhang, M., Li, Y., Zhao, S., Zhu, C., Sun, Y.

and Zhang, F. 2010. Energy-saving rotary fatigue

test device, Patent CN 201637565 (in Chinese).

Hornby, A. S. 1974. Oxford Advanced Learner’s Dictionary

of Current English, Oxford University Press,

rd Edition, p. 593.

Leati, E., Marani, P., Ansaloni, G., and Paoluzzi, R.

Active Regeneration Load Sensing: a simulated

comparison with traditional load sensing system

in excavator working cycle, Proc. of the 7th International

Fluid Power Conference, Aachen. Vol I,

pp. 103 - 115.

Morgan, G. 1991. Gerotor rotary flow dividers, The

American Society of Agricultural Engineers, Paper

N. 911596, pp. 1 - 27.

MSC 2010. EASY5 2010 Reference Manual, MSC

Software Corporation.

Rydberg, K.-E. 1983. On performance optimization

and digital control of hydrostatic drives for vehicle

applications, Linköping Studies in Science and

Technology, Dissertations, N. 99, Linköping University.

Watton, J. 2009. Fundamentals of Fluid Power Control,

Cambridge University Press, pp. 183-189.

Wilson, W. E. 1948. Performance criteria for positive

displacement pumps and fluid motors, ASME Semiannual

Meeting, Paper 48-SA-14, American Society

of Mechanical Engineers.

Zarotti, G. L. 1989. Rotary regenerative assemblies -

Operation and control, Proc. of the 2nd International

Conference “Fluid Power Transmission and Control”,

Hangzhou (RPC), pp. 355 - 360.

Zarotti, G. L. 2001. Load Sensing - cronaca di una testarda

giovinezza, Oleodinamica e Pneumatica, Vol.

XLII, N.3, pp. 130 - 137.

Downloads

Published

2013-03-01

How to Cite

Zarotti, L. G. (2013). THE TALE OF THE HIDDEN SHAFT. International Journal of Fluid Power, 13(1), 29–39. Retrieved from https://journals.riverpublishers.com/index.php/IJFP/article/view/695

Issue

2012: Vol 13 Iss 1

Section

Original Article

Most read articles by the same author(s)