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Sensorless Nonlinear Stroke Controller for an Implantable, Undulating Membrane Blood Pump

Type
Communications avec actes
Author
SCHEFFLER, Mattias
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
MECHBAL, Nazih
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
REBILLAT, Marc
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
MONTEIRO, Eric
86289 Laboratoire Procédés et Ingénierie en Mécanique et Matériaux [PIMM]
BARABINO, Nicolas

URI
http://hdl.handle.net/10985/19539
DOI
10.1109/CDC40024.2019.9030123
Date
2019

Abstract

This paper describes an original methodology to operate a new nonlinear vibrating membrane pump, actuated by a moving magnet actuator without the use of a motion sensor, in the scope of cardiac assistance. A nonlinear mathematical model of the system is established and used to parametrize a nonlinear position observer that uses the coils current as an input and which output is a feedback to a stroke controller. Actuator’s parameters are identified by a recursive least square algorithm and direct measurements. Finally, a numerical experiment illustrates the implementation of the algorithm and its possible applications.

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