Simulation of Piezoelectric Actuator and Investigation of Flow Rate using PZT Infusion Pump for Wearable Artificial Kidney

摘要

In this paper, design and simulation of piezoelectric actuator and fluid flow rate using MP6 PTZ micropump for artificial kidney have been presented. The piezoelectric actuator consists of silicon membrane and piezoelectric disk. Finite element method (FEM) using ANSYS has been used for simulation. The maximum displacement 3.6 μm occurs in the silicon membrane at the center at applied 100 V for frequency 200 Hz. Fluid flow rate using commercially available PZT MP6 micropump has been investigated for artificial kidney system. DI water and heparin have been considered as fluid during experiments. The flow rate has been controlled by adjusting the voltage and frequencies. Experimental results show that the MP6 pump is suitable for heparin infusion in our ongoing project for wearable artificial kidney. The presented research work provides useful information and predicted data to develop the optimized design of piezoelectric micropump for artificial kidney system.