Modelling of a Positive End-Expiratory Pressure Valve with a Voice-coil Actuator
Abstract: The positive end-expiratory pressure (PEEP) valve is important in the regulation of the pressure at the patient airways in devices for mechanical ventilation. The goal of this work is to derive a model that sufficiently captures the dynamics of the PEEP valve to be used for model-based control design. This paper describes the development of a model for common PEEP valve designs, thus allowing an adoption for different devices. A simplified first principle model with one mechanical degree of freedom is derived, under the assumption that the valve’s membrane behaves similar to a massspring- damper system. Following a grey-box model approach, physical parameters were lumped together and experimentally determined or identified from acquired data. Therefore, a valve test bench was developed to record various series of measurements. It was possible to determine a suitable flow factor which describes the correlation between flow, valve opening and upstream pressure. Additionally, a damping coefficient was estimated, with which the model achieves a good fit to the measured data at low dynamics and flows.
- Location
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Deutsche Nationalbibliothek Frankfurt am Main
- Extent
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Online-Ressource
- Language
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Englisch
- Bibliographic citation
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Modelling of a Positive End-Expiratory Pressure Valve with a Voice-coil Actuator ; volume:8 ; number:2 ; year:2022 ; pages:516-519 ; extent:4
Current directions in biomedical engineering ; 8, Heft 2 (2022), 516-519 (gesamt 4)
- Creator
- DOI
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10.1515/cdbme-2022-1132
- URN
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urn:nbn:de:101:1-2022090315330532649927
- Rights
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Open Access; Der Zugriff auf das Objekt ist unbeschränkt möglich.
- Last update
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15.08.2025, 7:25 AM CEST
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Associated
- Brütt, Robin
- Männel, Georg
- Brendle, Christian
- Rostalski, Philipp
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