磁悬浮左心室轴流泵机电模型研究

Mechanical electronic model for magnetically suspended left ventricular axial blood pump

阐述了磁悬浮人工心脏泵的结构,建立了磁悬浮轴流泵机电模型,在对转子进行动力学分析的基础上,得出了状态空间方程,状态方程揭示了轴流泵机电模型的本质.状态的变化不仅取决于控制,同时也与系统结构如转子质量、长度、质心位置及极转动惯量和赤道转动惯量有关.由状态方程对转子进行仿真,获得了转子轴向、径向振动位移结果,为研发磁悬浮左心室辅助装置提供了结构参数设计的方法与理论依据.

The structure of magnetically suspended artificial heart was described and the model for magnetically suspended axial blood pump was established. The dynamical characteristic of rotor was analyzed and the state space equation of this model was given. State equation promulgated the axial flow pump mechanical and electrical model essence. Certainly the state by various coefficients matrix the change not only to be decided by the control at the same time also with the system structure like rotor mass, the length, the nature heart position and extremely rotates the inertia, the equator rotation is used to concerns. According to the state space equation the rotor axial, radial direction vibration displacement result is calculated. Rotor displacement data and track reflect the magnetic bearings accurate. The theoretical principle for developing the Left Ventricular Assist Device is put forward.