MODELLING OF SPOOL POSITION FEEDBACK SERVOVALVES

Authors

  • Dušan Gordić University of Kragujevac, Faculty of Mechanical Engineering in Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Serbia and Montenegro
  • Milun Babić University of Kragujevac, Faculty of Mechanical Engineering in Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Serbia and Montenegro
  • Nebojša Jovičić University of Kragujevac, Faculty of Mechanical Engineering in Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Serbia and Montenegro

Keywords:

electrohydraulics, spool position feedback servovalves, mathematical model

Abstract

Based on a critical review of the previous research and the comprehensive theoretical analysis of all functional parts of two-stage electrohydraulic servovalves with a spool position feedback (a current amplifier, a torque motor, the first and the second stage of hydraulic amplification) a detailed mathematical model of the servovalves was created. The analysis was based on the fundamental laws of electromagnetism, fluid mechanics and general mechanics. The model parameters are physical quantities and the complexity of the model is only limited by the possibility of the correct numerical integration. It includes phenomena and quantities that are of influence on the behaviour of the servovalves, so it can predict their function in a wide range of expected working regimes. Results obtained with the numerical modelling on a personal computer were compared with the appropriate experimental data and the validity of the proposed model was confirmed with satisfactory accuracy.

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Author Biographies

Dušan Gordić, University of Kragujevac, Faculty of Mechanical Engineering in Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Serbia and Montenegro

Dušan Gordić Born in Prijepolje, Serbia in 1970. PhD in Mechanical Engineering from the University of Kragujevac in 2002. Assistant professor in the area of Fluid power & control at the Faculty of Mechanical Engineering in Kragujevac. He works on CAD of fluid power devices and applications of multimedia in fluid power lecturing.

Milun Babić, University of Kragujevac, Faculty of Mechanical Engineering in Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Serbia and Montenegro

Milun Babić Born in Sjenica, Serbia in 1951. PhD in Mechanical Engineering from the University of Belgrade in 1982. Professor of Hydraulic & pneumatic machinery at the Faculty of Mechanical Engineering in Kragujevac. He was a leader in many R&D projects performed at the Faculty concerning hydraulic machineries, hydrodynamic couplings and process plants. Presently working on energy efficiency.

Nebojša Jovičić, University of Kragujevac, Faculty of Mechanical Engineering in Kragujevac, Sestre Janjić 6, 34000 Kragujevac, Serbia and Montenegro

Nebojša Jovičić Born in Kragujevac, Serbia in 1963. PhD in Mechanical Engineering from the University of Kragujevac in 2000. Assistant professor in the area of Numerical methods and CFD at the Faculty of Mechanical Engineering in Kragujevac. Current research on new solutions for wind turbine design

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Published

2004-03-01

How to Cite

Gordić, D., Babić, M., & Jovičić, N. (2004). MODELLING OF SPOOL POSITION FEEDBACK SERVOVALVES. International Journal of Fluid Power, 5(1), 37–50. Retrieved from https://journals.riverpublishers.com/index.php/IJFP/article/view/593

Issue

2004: Vol 05 Iss 1

Section

Original Article