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Hydro-Mechanical Model of Electro-Hydraulic Servovalve Based on Bond Graph

Abstract : Bond Graph, as a graphical modeling language, can represent various physical domains in a unified form. This paper deals with the establishment of a Bond Graph model of an electro-hydraulic servovalve which consists of a torque motor, a cantilever feedback spring, and two hydraulic stages, one with a nozzle/flapper system and the other with a spool valve. The entire model can be divided into a hydraulic and a mechanical part which are connected by 2-port modulated R-elements representing orifice pressure drop and jet force phenomena, and TF-elements coupling the mechanical and hydraulic power. The Bond Graph model of whole system is then presented. Finally, using AMESim on which a model was created based on the established Bond Graph, simulation results are compared with the experimental measurements.
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Submitted on : Tuesday, April 30, 2019 - 5:58:52 PM
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  • HAL Id : hal-00988577, version 1


Yaozhong Xu, Eric Bideaux, Sylvie Sesmat, Lilia Sidhom, Xavier Brun. Hydro-Mechanical Model of Electro-Hydraulic Servovalve Based on Bond Graph. 6th Fluid Power Net International PhD Symposium, Jul 2010, West Lafayette, United States. ⟨hal-00988577⟩



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