Development of a magnetically suspended centrifugal blood pump using optimal control theory

Author

Kim, H.I. ; Ko, K.R. ; Kim, H.C. ; Kim, W.G.

Author_Institution

Seoul Nat. Univ., South Korea

Volume

2

fYear

1999

fDate

36434

Abstract

The authors have developed a centrifugal blood pump with a magnetically suspended impeller. The magnetic levitation system has a simple structure of only 3 actively controlled axes. A linear quadratic optimal control algorithm regulates the position of the impeller within 30 μm from the set point for whole range of motor speed. Performance evaluation tests show satisfactory results of flow rate and differential pressure of the developed pump as a cardiopulmonary bypass (CPB) device

Keywords

artificial organs; biocontrol; cardiology; haemodynamics; magnetic levitation; optimal control; pumps; 30 mum; actively controlled axes; artificial heart; cardiopulmonary bypass device; differential pressure; flow rate; impeller; linear quadratic optimal control algorithm; magnetically suspended centrifugal blood pump; motor speed; performance evaluation tests; Biomedical engineering; Blood; Brushless DC motors; Control systems; DC motors; Impellers; Magnetic levitation; Optimal control; Pumps; Signal processing algorithms;

fLanguage

English

Publisher

ieee

Conference_Titel

[Engineering in Medicine and Biology, 1999. 21st Annual Conference and the 1999 Annual Fall Meetring of the Biomedical Engineering Society] BMES/EMBS Conference, 1999. Proceedings of the First Joint

Conference_Location

Atlanta, GA

ISSN

1094-687X

Print_ISBN

0-7803-5674-8

Type

conf

DOI

10.1109/IEMBS.1999.803912

Filename

803912