基于自整定模糊PI算法的磁耦合离心血泵控制研究  

Research on Magnetic Coupling Centrifugal Blood Pump Control Based on a Self-tuning Fuzzy PI Algorithm

作　　者：杨磊[1] 杨明[1] 许自豪[1] 庄晓奇[1] 王伟[2] 张海波[2] 韩露[2] 徐亮[1] 

机构地区：[1]上海交通大学仪器科学与工程系,上海200240 [2]上海儿童医学中心,上海200127

出　　处：《生物医学工程学杂志》2014年第5期1050-1056,共7页Journal of Biomedical Engineering

基　　金：上海交通大学"医工(理)交叉研究基金"资助项目(YG2011ZD03);国家自然科学基金资助项目(81027001)

摘　　要：本文研究和设计了磁耦合离心血泵的控制系统,简要介绍了磁耦合离心血泵的结构和原理,分析了人体体循环模型。血泵性能的优劣不仅和结构材料有关,控制算法也对其有很大的影响。针对无刷直流电机,研究了电机电流双闭环控制算法;为了在不同的工作状态下算法能够自适应参数的变化,采用了自整定模糊PI控制算法,给出了模糊规则的设计方法。利用Matlab Simulink组件仿真电机控制系统检验算法的性能,并简要介绍了算法在硬件系统上的实现方法。最后搭建硬件平台进行实验,证明了自整定模糊PI控制算法能大大改善血泵的动态和稳态性能,实现了电机转速和血泵流量的稳定和可调。The purpose of this paper is to report the research and design of control system of magnetic coupling centrifugal blood pump in our laboratory,and to briefly describe the structure of the magnetic coupling centrifugal blood pump and principles of the body circulation model.The performance of blood pump is not only related to materials and structure,but also depends on the control algorithm.We studied the algorithm about motor current double-loop control for brushless DC motor.In order to make the algorithm adjust parameter change in different situations,we used the self-tuning fuzzy PI control algorithm and gave the details about how to design fuzzy rules.We mainly used Matlab Simulink to simulate the motor control system to test the performance of algorithm,and briefly introduced how to implement these algorithms in hardware system.Finally,by building the platform and conducting experiments,we proved that self-tuning fuzzy PI control algorithm could greatly improve both dynamic and static performance of blood pump and make the motor speed and the blood pump flow stable and adjustable.

关 键 词：磁耦合离心血泵 双闭环控制 模糊PI控制 SIMULINK仿真 

分 类 号：TH789[机械工程—仪器科学与技术] TP273[机械工程—精密仪器及机械]