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  4. Modelling of a Dielectric Electroactive Polymer Tubular Shape Sensor for Pressure Measurements
 
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conference paper

Modelling of a Dielectric Electroactive Polymer Tubular Shape Sensor for Pressure Measurements

Chavanne, J.
•
Civet, Y.
•
Perriard, Y.  
2016
Proceedings of the 2016 IEEE International Conference on Advanced Intelligent Mechatronics (AIM)
2016 IEEE International Conference on Advanced Intelligent Mechatronics (AIM)

The variation of pressure of the blood is a key parameter in the development of ventricular assist device. This latter is useful in order to synchronize the behavior of the actuator with the cardiac frequency. This paper presents a sensor made of a dielectric electroactive polymer (DEAP). A particularity of this sensor is the special tubular shape, similar to an aorta, which allows to be used for medical application. The sensor is based on the measurement of the variation of the capacitance of the DEAP because of the inner pressure. An analytical model is proposed to explain the deformation of the thin membrane. A feature of the model is to take into account the boundary conditions of the cylinder that causes a particular curve to the inflated cylinder. The analytical equations for the inner and outer radius variation of the inflated tube are proposed in order to define the variation of the surface and the thickness of the sensor. The study of the stress in the membrane is done to link the internal pressure to the geometrical model of the deformation. The mean error between the pressure measurement and the value deduced from the analytical model according to the capacitance is around 7%. The analytical model is better for higher pressure with a mean error of 2.4% from 80 Pa.

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Type
conference paper
DOI
10.1109/AIM.2016.7576868
Web of Science ID

WOS:000387100300132

Author(s)
Chavanne, J.
•
Civet, Y.
•
Perriard, Y.  
Date Issued

2016

Publisher

IEEE

Publisher place

Piscataway, NJ, USA

Published in
Proceedings of the 2016 IEEE International Conference on Advanced Intelligent Mechatronics (AIM)
ISBN of the book

978-1-5090-2065-2

Total of pages

6

Series title/Series vol.

IEEE ASME International Conference on Advanced Intelligent Mechatronics

Start page

810

End page

15

Subjects

Blood pressure measurement

•

Cardiology

•

Electroactive polymer actuators

•

Medical control systems

Peer reviewed

REVIEWED

Written at

EPFL

EPFL units
LAI  
Event nameEvent placeEvent date
2016 IEEE International Conference on Advanced Intelligent Mechatronics (AIM)

Banff, AB, Canada

July 12-15, 2016

Available on Infoscience
October 28, 2016
Use this identifier to reference this record
https://infoscience.epfl.ch/handle/20.500.14299/130824
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