用于便携式呼吸机的无位置传感器无刷直流电机控制系统  

Control system of sensorless BLDC used for portable ventilator

作　　者：张少锋[1] 高艳霞[1] 徐妍萍[1] 邢淞[1] 

机构地区：[1]上海大学机电工程与自动化学院,上海200072

出　　处：《电气传动自动化》2009年第4期23-27,共5页Electric Drive Automation

摘　　要：首先介绍了呼吸机系统组成和电路结构,分析了反电势法无刷直流电机控制系统的原理和反电势检测的难点,并阐述了起动过程中的要点。为了消除由PWM调制引入的高频干扰,给出了两种反电势的检测方法,实验结果证明了其可行性。The system architeeture and eircuit of ventilator is firstly introduced, the principle and difficulty on the measurement of hack-EMF in the sensorless BLDC control system is analyzed. The key point on the starting process is also expatiated. The two methods on the measurement of baek-EMF for eliminating the high-frequency interfere by PWM eontrol signal is given. The experiment results show the feasibility.

关 键 词：无位置传感器无刷直流电机 呼吸机 检测 起动过程 

分 类 号：TM33[电气工程—电机]