In:
Acta Polytechnica, Czech Technical University in Prague - Central Library, Vol. 53, No. 6 ( 2013-12-31), p. 895-900
Abstract:
Mechanically ventilated patients require appropriate settings of respiratory control variables to maintain acceptable gas exchange. To control the carbon dioxide (CO 〈 sub 〉 2 〈 /sub 〉 ) level effectively and automatically, system identification based on a human subject was performed using a linear affine model and a nonlinear Hammerstein structure. Subsequently, a robust controller was designed using the H 〈 sub 〉 ∞ 〈 /sub 〉 loop-shaping approach, which synthesizes the optimal controller based on a specific objective by achieving stability with guaranteed performance. For demonstration purposes, the closed-loop control ventilation system was successfully tested in a human volunteer. The experimental results indicate that the blood CO 〈 sub 〉 2 〈 /sub 〉 level may indeed be controlled noninvasively by measuring end-tidal CO 〈 sub 〉 2 〈 /sub 〉 from expired air. Keeping the limited amount of experimental data in mind, we conclude that H 〈 sub 〉 ∞ 〈 /sub 〉 loop-shaping may be a promising technique for control of mechanical ventilation in patients with respiratory insufficiency.
Type of Medium:
Online Resource
ISSN:
1805-2363
,
1210-2709
DOI:
10.14311/AP.2013.53.0895
Language:
Unknown
Publisher:
Czech Technical University in Prague - Central Library
Publication Date:
2013
detail.hit.zdb_id:
2575330-7
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