Article | Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015 | High-fidelity Modelling of Self-regulating Pneumatic Valves
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Title:
High-fidelity Modelling of Self-regulating Pneumatic Valves
Author:
Alexander Pollok: Institute of System Dynamics and Control, German Aerospace Center (DLR), Germany Francesco Casella: Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Italy
DOI:
10.3384/ecp15118577
Download:
Full text (pdf)
Year:
2015
Conference:
Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015
Issue:
118
Article no.:
062
Pages:
577-583
No. of pages:
7
Publication type:
Abstract and Fulltext
Published:
2015-09-18
ISBN:
978-91-7685-955-1
Series:
Linköping Electronic Conference Proceedings
ISSN (print):
1650-3686
ISSN (online):
1650-3740
Publisher:
Linköping University Electronic Press, Linköpings universitet


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In conventional aircraft energy systems, Self-regulating pneumatic valves are used to control the pressure and mass flow of the bleed air. The dynamic behavior of these valves is complex and dependant on several physical phenomena. In some cases, limit cycles can occur, deteriorating performance. This paper presents a complex multiphysical model of Self-regulating pneumatic valves implemented in Modelica. First, the working-principle is explained and common challenges in control-system design-problems related to these valves are illustrated. Then, a Modelica-model is presented in detail, taking into account several physical domains. It is then shown, how limit cycle oscillations occuring in aircraft energy systems can be represented with this model. Finally, some multi-domain interactive effects are described.

Keywords: Modelica; hermofluid; Modeling; Friction; Electrohydraulic; Hydraulic

Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015

Author:
Alexander Pollok, Francesco Casella
Title:
High-fidelity Modelling of Self-regulating Pneumatic Valves
DOI:
http://dx.doi.org/10.3384/ecp15118577
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Proceedings of the 11th International Modelica Conference, Versailles, France, September 21-23, 2015

Author:
Alexander Pollok, Francesco Casella
Title:
High-fidelity Modelling of Self-regulating Pneumatic Valves
DOI:
http://dx.doi.org/10.3384/ecp15118577
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