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Nonlinear modeling of a pulmonary waveform generator.

Authors
Reynolds-JS; Stemple-KJ; Petsko-RA; Ebeling-TR; Frazer-DG
Source
Ann Biomed Eng 2001 Oct; 29(Suppl 1):S-142
NIOSHTIC No.
20021419
Abstract
Pulmonary waveform generators consisting of motor driven piston pumps are commonly used to test respiratory function equipment. Gas compression within these generators can produce significant distortion of the output flow-time profile when testing peak expiratory flow (PEF) meters. The waveform generator with load (PEF meter connected at the generator output) was modeled as a time varying RC circuit, where resistance represents flow resistance of the pump load, and capacitance represents gas compliance in the pump chamber. Resistance and capacitance are time-varying parameters since R is a nonlinear function of flow, and C varies as a function of pump volume.
Keywords
Models; Pulmonary-system; Respiratory-equipment; Gas-sampling; Compressed-gases; Compression-tests
CODEN
ABMECF
Publication Date
20011004
Document Type
Journal Article
Editors
Hochmuth-RM; Reichert-WM; Truskey-GA
Fiscal Year
2002
NTIS Accession No.
NTIS Price
ISSN
0090-6964
NIOSH Division
HELD
Priority Area
Surveillance Research Methods; Pulmonary System Disorders
Source Name
Annals of Biomedical Engineering
State
WV
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