Abstract
The comfortability of the receptor with a left ventricular assist pump becomes more and more important along with the daily prolonged survival. Thereby it is necessary to achieve automatic measurement and bionic control for heart pump. The key-point is to improve the sensitivity of flow rate change after the pressure head variation in the pump, so as to maintain the flow rate balance between the left ventricular assist pump and the natural right ventricle. This paper presents the measurement of the pump flow and head by computation from motor driving parameters, and the control of the pump imitating the natural ventricle, much more sensitive than available constant voltage and constant RPM control.
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