Modeling dynamic blowers in Simscape® for mechanical ventilation

RWTH Publications (RWTH Aachen)

Abstract

This contribution focuses on modeling dynamic blowers by forming a Hammerstein model in which the linear dynamics of the rotational speed and the non-linear static relationship of differential pressure and volume flow is regarded separately. Two isolated identification processes were conducted to parameterize the model which was created upon pre-existing Simscape® elements. For validation purposes the model was placed in a pneumatic circuit equally to a hardware test bench and results are presented for two operating points. In the future this model approach could serve as the basis for model-based control tuning of blowers for mechanical ventilation.

Authors 4

1. Felix Röhren Aachen Medical Information Technology (MedIT)

   RWTH Aachen University

   Affiliation as printed

   Medical Information Technology, RWTH Aachen University, Aachen, Germany

2. Alina Junior Aachen Medical Information Technology (MedIT)

   RWTH Aachen University

   Affiliation as printed

   Medical Information Technology, RWTH Aachen University, Aachen, Germany

3. Steffen Leonhardt Aachen Medical Information Technology (MedIT)

   RWTH Aachen University

   Affiliation as printed

   Medical Information Technology, RWTH Aachen University, Aachen, Germany

4. Marian Walter Aachen Medical Information Technology (MedIT)

   RWTH Aachen University

   Affiliation as printed

   Medical Information Technology, RWTH Aachen University, Aachen, Germany