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Titolo:
A sensorless approach to control of a turbodynamic left ventricular assistsystem
Autore:
Choi, S; Antaki, JF; Boston, JR; Thomas, D;
Indirizzi:
Univ Pittsburgh, Dept Elect Engn, Pittsburgh, PA 15261 USA Univ Pittsburgh Pittsburgh PA USA 15261 ct Engn, Pittsburgh, PA 15261 USA Univ Pittsburgh, Dept Surg, McGowan Artificial Organ Ctr, Pittsburgh, PA 15261 USA Univ Pittsburgh Pittsburgh PA USA 15261 gan Ctr, Pittsburgh, PA 15261 USA Nimbus Med Inc, Rancho Cordova, CA 95670 USA Nimbus Med Inc Rancho Cordova CA USA 95670 , Rancho Cordova, CA 95670 USA
Titolo Testata:
IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY
fascicolo: 3, volume: 9, anno: 2001,
pagine: 473 - 482
SICI:
1063-6536(200105)9:3<473:ASATCO>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
MODEL;
Keywords:
flow estimate; flow pulsatility; fuzzy control; rotary heart pump control; ventricular assist device;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Engineering, Computing & Technology
Citazioni:
21
Recensione:
Indirizzi per estratti:
Indirizzo: Choi, S Univ Pittsburgh, Dept Elect Engn, Pittsburgh, PA 15261 USA Univ Pittsburgh Pittsburgh PA USA 15261 Pittsburgh, PA 15261 USA
Citazione:
S. Choi et al., "A sensorless approach to control of a turbodynamic left ventricular assistsystem", IEEE CON SY, 9(3), 2001, pp. 473-482

Abstract

A fuzzy logic controller for a rotary, turbodynamic left ventricular assist system was developed to optimize the delivery of blood flow without inducing suction in the ventricle, The controller is based on the putsatility inblood flow through the pump and assumes that the natural heart is still able to produce some pumping action. To avoid the use of flow transducers, which are not reliable for long term use, the controller estimates flow usinga model of the assist device. The controller was tested in computer simulation, a mock circulatory system, and in animal experiments. Simulation studies suggest that the fuzzy logic controller is more robust to parameter changes than a traditional proportional-integral (PI) controller. Experimentalresults in animals showed that the controller is able to provide satisfactory flows at adequate perfusion pressures while avoiding suction in the left ventricle.

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Documento generato il 26/10/20 alle ore 02:36:53