血泵转子远场驱动的原理及分析

Principle and Research on Far Field Driving System of Blood Pump

驱动问题是血泵研究的关键性问题之一,传统的穿皮导线传递能量的方式易带来术后感染等问题。因此,现在依靠磁力来实现血泵转子的远场驱动成为研究的一个主题,本文提出运用永磁同步电机的原理,依靠线圈组的交变电流产生交变磁场来驱动永磁体转动。建立永磁转子驱动模型,利用磁场及电磁场和有限元理论,分析、计算不同情况下永磁转子所受耦合力矩。研究表明,通过该方法实现转子的转动的方法是可行的,避免了在体外结构的机械转动,对以后的研究工作有一定的参考和指导意义;

The driving problem is one of the key problem in research of the blood pump, the traditional way use conduct wire which penetrating the skin to transfer the energy may cause infection after the operation.So, use the magnetic force to drive the rotor in distance becomes a theme in the research, this essay depends on the principal of the permanent synchronous magnet electromotor, use current switch open to drive the rotor. Modeling the driving system, depends on the theory of magnetic, electromagnetic and FEA theory, analyse, compute the coupling moment of the rotor in different conditions. The research show us the way we use to make the rotor tuming is possible, avoid the mechanic rotation out of the body, can give reference and guidance to the follow research works.