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High-fidelity Modelling of Self-regulating Pneumatic Valves

Pollok, Alexander and Casella, Francesco (2015) High-fidelity Modelling of Self-regulating Pneumatic Valves. 11th International Modelica Conference 2015, 21.-23. September 2015, Versailles, Frankreich.

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In conventional aircraft energy systems, self-regulating pneumatic valves (SRPVs) are used to control the pressure and mass flow of the bleed air. The dynamic behavior of these valves is complex and dependent on several physical phenomena. In some cases, limit cycles can occur, deteriorating performance. This paper presents a complex multiphysical model of SRPVs 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 shown, how limit cycle oscillations occurring in aircraft energy systems can be represented with this model. Finally, some multi-domain interactive effects are described.

Item URL in elib:https://elib.dlr.de/99400/
Document Type:Conference or Workshop Item (Speech)
Title:High-fidelity Modelling of Self-regulating Pneumatic Valves
AuthorsInstitution or Email of AuthorsAuthor's ORCID iD
Pollok, Alexanderalexander.pollok (at) dlr.deUNSPECIFIED
Casella, Francescofrancesco.casella (at) polimi.itUNSPECIFIED
Date:21 September 2015
Refereed publication:Yes
Open Access:Yes
Gold Open Access:No
In ISI Web of Science:No
Keywords:Modelica, Thermofluid, Modeling, Friction, Electrohydraulic, Hydraulic
Event Title:11th International Modelica Conference 2015
Event Location:Versailles, Frankreich
Event Type:international Conference
Event Dates:21.-23. September 2015
Organizer:Modelica Association
HGF - Research field:Aeronautics, Space and Transport
HGF - Program:Aeronautics
HGF - Program Themes:fixed-wing aircraft
DLR - Research area:Aeronautics
DLR - Program:L AR - Aircraft Research
DLR - Research theme (Project):L - Systems and Cabin (old)
Location: Oberpfaffenhofen
Institutes and Institutions:Institute of System Dynamics and Control > Aircraft System Dynamics
Deposited By: Pollok, Dipl.-Ing. Alexander
Deposited On:23 Nov 2015 16:25
Last Modified:31 Jul 2019 19:56

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