The Simulation Experiment of Control System for Left Ventricular Assist Device
10.3969/j.issn.1671-7104.2016.02.021
- VernacularTitle:一种左心室辅助装置流量控制系统的仿真实验
- Author:
Zongtao WANG
1
;
Lijun JIN
;
Shiping YAN
;
Zeliang FU
Author Information
1. 广东药学院附属第一医院,广州市,510080
- Keywords:
left ventricular assist device;
fllow controling;
simulation
- From:
Chinese Journal of Medical Instrumentation
2016;40(2):143-146
- CountryChina
- Language:Chinese
-
Abstract:
Objective To test the accuracy, the reliability and the stability offl ow-controling method of a new percutaneous left ventricular assist device.Methods With the AMEsim to set up a simulation model, analysis the variations of motor speed, flow and pressure by adjusting the size of valve. and we test the improved-theoretical model with outside experiment.Results In the simulation experiment, with the variations of pressure from A, the system can regulate the motor speed to maintain the pump outlet pressure 1.1×105 Pa~1.2×105 Pa and control thefl ow. With the B valve size changes, thefl ow-controling by the system identify and change the motor speed, to maintain the pump inlet pressure from-0.25×105 Pa to-0.10×105 Pa. In outside experiment, with the variations of the size of valve A and valve B, the pump can change the voltage by self-regulation, maintain the entrance and exit of pressure is relatively stable and control thefl ow.Conclusions It is a fast-responding and better robust way, by adding the pressure sensor to adjust the speed of motor, to control thefl ow accurately.
