Modeling and Parametric Identification of a Variable-Displacement Pressure-Compensated Pump

Filipe Spuri
Mechanical Engineering Division, Instituto Tecnológico de Aeronáutica, ITA, São José dos Campos, São Paulo/Brazil

Luiz Goes
Mechanical Engineering Division, Instituto Tecnológico de Aeronáutica, ITA, São José dos Campos, São Paulo/Brazil

Ladda ner artikelhttp://dx.doi.org/10.3384/ecp1714452

Ingår i: Proceedings of 15:th Scandinavian International Conference on Fluid Power, June 7-9, 2017, Linköping, Sweden

Linköping Electronic Conference Proceedings 144:5, s. 52-60

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Publicerad: 2017-12-20

ISBN: 978-91-7685-369-6

ISSN: 1650-3686 (tryckt), 1650-3740 (online)


This work deals with bond-graph modeling and identification of variable-displacement pressure-compensated pump using a gray-box modeling approach. The model structure is defined using the bond graph technique, a graphical representation based on flow of energy in the system, which is implemented in the 20-sim software. The bond graph model is converted to state-space representation and the unknown parameters of equations of state are estimated applying parametric identification technique, the Prediction Error Method (PEM) on the SITB (System Identification Toolbox) MATLAB® software. The obtained model is validated collecting an experimental data set on test rig and comparing to simulation results.


Bond graph, system identification, variable displacement pump


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