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针对人工心脏微型轴流血泵的自适应控制的问题,将实时血流量作为反馈量输入到血泵控制系统中进行调控。根据轴流血泵控制理论,设计微型轴流式血泵的双闭环稳定智能控制系统,采用超声多普勒效应设计血流量的提取模块,实现血流参数的无创测量,从而完成对人工心脏轴流血泵的自适应控制。通过实验,测试系统的性能,得到心动周期血流流量曲线以及轴流血泵驱动电机的输出功率曲线。从而证明血流量信号作为控制反馈量,可以实时反映主要的血流动力学特征参数,比较全面反映个体差异,受体的实际生理反应可以不断反馈控制轴流血泵的转速系统。
In view of the problem of adaptive control of artificial heart mini-axial pump, the real-time blood flow is input into the blood pump control system as the feedback amount for regulation. According to the theory of axial flow pump control, a double closed-loop stable intelligent control system of micro axial flow pump was designed. Ultrasound Doppler effect was used to design the blood flow extraction module to realize non-invasive measurement of blood flow parameters, Bleeding pump adaptive control. Through the experiment, the performance of the system is tested, the cardiac cycle blood flow curve and the output power curve of the axial blood pump drive motor are obtained. Therefore, it can be proved that the blood flow signal is the control feedback value, which can reflect the main hemodynamic parameters in real time and reflect the individual differences more completely. The actual physiological response of the receptor can continuously feedback control the speed system of the axial blood pump.