Self-Sensing Physiologic Control of a Rotary Mag Lev LVAD

旋转磁悬浮 LVAD 的自感知生理控制

基本信息

  • 批准号:
    7325486
  • 负责人:
  • 金额:
    $ 9.21万
  • 依托单位:
  • 依托单位国家:
    美国
  • 项目类别:
  • 财政年份:
    2007
  • 资助国家:
    美国
  • 起止时间:
    2007-09-01 至 2008-02-29
  • 项目状态:
    已结题

项目摘要

DESCRIPTION (provided by applicant): The overall objective of the proposed SBIR Program is to develop a novel physiologic control system for use with the rotary centrifugal MiTiHeart LVAD that employs a magnetically suspended impeller with a hybrid active/passive magnetic bearing support system wherein only the thrust bearing is actively controlled. The fundament premise forwarded is that the available system data sets will provide a self-sensing and redundant method of controlling pump output while avoiding the detrimental conditions associated with negative flow or suction/cavitation at the inlet. It is expected that the pump operation will be different for a normally operating pump and one undergoing negative flow or suction at the inlet due to the lower inlet pressure and hence fluid forces acting on the rotor. By monitoring pump operating parameters a novel and reliable pump speed control system will be developed that avoids inlet suction/cavitation and/or negative flow. The goal of Phase I project is to demonstrate the feasibility of using the measured pump parameters for pump control through a parametric study that would lead to the development of the appropriate control scheme. The goal of Phase II will be to evaluate the control scheme using established computer simulation models to refine the Phase I control algorithm and controller for the MiTiHeart LVAD. The controller and algorithm will then be validated through instrumented non-pulsatile and pulsatile mock loop in vitro testing. Final Phase II validation testing will be accomplished through in vivo animal studies. The proposed high-speed machining center will be used by dentists and/or dental laboratory technicians for fabrication of ceramic dental restorations. The proposed machining center will be designed with an innovative integrated air-driven, high-speed, precision, spindle/motor assembly to allow high machining rates while ensuring low potential for machining damage: thus, enabling rapid fabrication of low-damage dental restorations by machining.
描述(由申请人提供):拟议SBIR项目的总体目标是开发一种新型生理控制系统,用于旋转离心式MiTiHeart LVAD,该系统采用磁悬浮叶轮和混合主动/被动磁轴承支撑系统,其中仅推力轴承受到主动控制。提出的基本前提是,可用的系统数据集将提供控制泵输出的自感知和冗余方法,同时避免与入口处的负流或抽吸/空化相关的有害条件。预期对于正常操作的泵和由于较低的入口压力以及因此作用在转子上的流体力而在入口处经历负流动或抽吸的泵,泵操作将是不同的。通过监控泵的运行参数,将开发一种新颖可靠的泵速控制系统,以避免入口吸入/气蚀和/或负流。第一阶段项目的目标是通过参数研究证明将测量的泵参数用于泵控制的可行性,从而制定适当的控制方案。第II阶段的目标是使用已建立的计算机仿真模型评价控制方案,以完善MiTiHeart LVAD的第I阶段控制算法和控制器。然后将通过仪器化非脉动和脉动模拟环体外测试确认控制器和算法。最终II期确认试验将通过体内动物研究完成。牙科医生和/或牙科实验室技术人员将使用拟议的高速加工中心制造陶瓷牙科修复体。拟议的加工中心将设计有一个创新的集成气动,高速,精密,主轴/电机组件,以允许高加工速率,同时确保低潜在的加工损坏:因此,能够快速制造低损坏的牙科修复体的加工。

项目成果

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James Farley Walton其他文献

James Farley Walton的其他文献

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{{ truncateString('James Farley Walton', 18)}}的其他基金

Self-Sensing Physiologic Control of a Rotary Mag Lev LVAD
旋转磁悬浮 LVAD 的自感知生理控制
  • 批准号:
    7923133
  • 财政年份:
    2007
  • 资助金额:
    $ 9.21万
  • 项目类别:

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