Robust Flow Control in a Mechatronic Test Lung with Spontaneous Breathing

IEEE International Conference on Advanced Intelligent Mechatronics (AIM), pp. 873–878

Abstract

To systematically evaluate mechanical ventilators and their automation concepts, test lungs can be used in hardware-in-the-loop (HiL) simulations. However, most test lungs do not simulate lungs with spontaneous breathing. This study presents a mechatronic test lung that consists of a bellow and a voice coil actuator. After modeling and parameter estimation, the model was used for the synthesis of a robust controller. The whole system was validated with a reference lung model and recorded measurement data of volume flow. The model identification resulted in a root-mean-square error (RMSE) of $\mathbf{0.96} \mathbf{~ m m}$. The controller achieved a maximum RMSE of 0.062 liters per second and a relative compliance error of $5.88 \%$. The test lung has the potential to enable HiL simulations of mechanical ventilation with spontaneous breathing.

Authors 6

1. Arnhold Lohse Aachen Chair for Medical Information Technology

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,Chair for Medical Information Technology (MedIT),Aachen,Germany

2. Farid Hamidov Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,MedIT,Aachen,Germany

3. Patrick Borchers Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,MedIT,Aachen,Germany

4. Philip von Platen Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,MedIT,Aachen,Germany

5. Steffen K. Leonhardt Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,MedIT,Aachen,Germany

6. Marian Walter Aachen

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University,MedIT,Aachen,Germany