OPTIMIZED JARVIK ELECTROHYDRAULIC ARTIFICIAL HEART

这项工作的最终（第三阶段）目标是充分优化 人工心脏支持系统的电子和动力部件 最大限度地减少对电池的需求，并开发高能量密度 锌空气电池组，以产生重量非常轻的系统， 完全便携，以获得患者和公众的普遍接受 人造心脏的一部分 第一阶段工作的目的是：1）优化 换向直流电动机，在其换向期间，通过采用 带脉宽的动力制动、惯性滑行和插塞换向方法 调制，以最小化反转泵所需的功率;以及2） 证明锌空气电池组的实用性，以提供足够的电力， 减少体积和重量。 将进行台架测试以确定最佳控制器 配置. 然后，将使用实际测试最佳配置 电池组，以确定电池的最大使用时间。 电池 电池组将使用锌空气纽扣电池， 密度是高质量镍镉电池的12倍。 的 将测试当前控制器配置以建立基线。

The ultimate (Phase III) objective of this effort is to fully optimize the electronic and power components of the artificial heart support system to minimize the demands on the battery, and to develop a high energy density zinc-air battery pack, to yield a system that is very light weight and completely portable in order to gain popular patient and public acceptance of the artificial heart. The purpose of this Phase I effort is to: 1) optimize the efficiency of the reversing DC motor, during the period of its reversal, by employing the methods of dynamic braking, coasting and plug reversing with pulse width modulation, to minimize the power required to reverse the pump; and 2) prove the utility of a zinc-air battery pack to provide adequate power at reduced volume and weight. Bench testing will be performed to identify the optimum controller configuration. Then the optimum configuration will be tested using actual battery packs to determine the maximum time of battery use. The battery packs will be constructed using zinc-air button cells which have an energy density twelve times that of high quality nickel-cadmium cells. The present controller configuration will be tested to establish a base-line.