小型无刷直流电动机无位置传感器控制的设计

Design of a Position-sensorless Controller for Small BLDCM

介绍一种用于人工心脏轴流式血泵的无位置传感器无刷直流电动机闭环调速控制系统的电路设计。利用自起动方式实现电机起动,当电机达到额定转速时进入闭环控制系统,利用反电势逻辑积分法,实现无刷直流电动机无位置传感器控制。

A kind of closed loop timing control system based on position - sensorless control for axial blood pump of artificial heart brushless DC motor is introduced in this paper. The design makes use of start method to carry out the start of the motor. The system changes into the closed - loop control while the motor attaining the rated speed. The brushless DC motor without position - sensorless control is controled by using of the back - EMF logic integral method.