Test controller design, implementation, and performance for a magnetic suspension continuous flow ventricular assist device.

Test controller design, implementation, and performance for a magnetic suspension continuous flow ventricular assist device.
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测试磁悬浮连续流心室辅助装置的控制器设计、实现和性能。

DOI:
10.1046/j.1525-1594.1999.06424.x
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发表时间:
1999
期刊:
影响因子:
2.4
通讯作者:
Khanwilkar,P
Khanwilkar,P
中科院分区:
工程技术3区
文献类型:
--
作者:
Hilton,EF;Allaire,PE;Wei,N;Baloh,MJ;Bearnson,G;Olsen,DB;Khanwilkar,P

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设计、制造并测试了一种新型的全磁悬浮连续流脑室辅助装置。磁悬浮使离心泵的叶轮在泵的间隙通道内居中,从而避免任何形式的接触。非接触式操作的设计目的是提供非常高的预期机械可靠性、大间隙、低溶血以及与目前的脉动装置相比相对较小的尺寸。叶轮进口侧和出口侧独特的磁致动器配置为叶轮提供了完整的5轴控制和悬浮。轴承系统分为三个位移轴和两个角控制轴。为首次悬架试验选择的控制器由5个比例积分微分(PID)控制器组成的分散式集合。本文描述了控制器,并概述了与磁轴承性能有关的一些结果。该泵已在水和血液中成功运行,设计条件适合用作心脏辅助装置。
A new continuous flow ventricular assist device using full magnetic suspension has been designed, constructed, and tested. The magnetic suspension centers the centrifugal pump impeller within the clearance passages in the pump, thus avoiding any form of contact. The noncontact operation is designed to give very high expected mechanical reliability, large clearances, low hemolysis, and a relatively small size compared to current pulsatile devices. A unique configuration of magnetic actuators on the inlet side and exit sides of the impeller provides full 5 axis control and suspension of the impeller. The bearing system is divided into segments which allow for 3 displacement axes and 2 angular control axes. The controller chosen for the first suspension tests consists of a decentralized set of 5 proportional integral derivative (PID) controllers. This document describes both the controller and an overview of some results pertaining to the magnetic bearing performance. The pump has been successfully operated in both water and blood under design conditions suitable for use as a ventricular assist device.
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