1·At startup, there is no back-EMF due to the stationary motor, and the motor position cannot be detected in sensorless mode.
在启动时，没有反电动势，在无传感器模式下电机的位置不能检测到。
2·The sensorless of induction motor field-oriented control employing stator voltages and currents has difficulty in estimating rotor flux in the low-speed range.
在低速范围内，对无传感器感应电动机进行矢量控制时用定子电压和电流推算转子磁通是比较困难的。
3·A sensorless control strategy for permanent magnet synchronous motors is presented based on the measurement and observation of stator current, voltage and flux vector.
根据测量和观测的定子电流、电压和磁链，提出了一种永磁同步电动机无传感器控制方案。
4·A method to implement sensorless control of Surface Mounted PMSM based on fluctuating high frequency voltage signal injection was introduced.
本文介绍了一种基于脉动高频电压信号注入法实现面装式永磁同步电机无传感器控制的方法。
5·A new sensorless control method for AC permanent magnet linear servo motor using a sliding mode observer is proposed in this paper.
提出了一种采用滑模观测器的交流永磁直线伺服电机无传感器控制的新方法。
1·The emphasis of this paper is the commutation control of sensorless BLDC motor, which is used to drive Photovoltaic Pumps.
本文所研究的重点是无位置传感器直流无刷电机的换向控制，电机驱动的对象为光伏水泵系统。
2·Based on sensorless technology, the thesis has done some analysis theoretically and designed and tested the system of BLDCM used on air-conditioning compressor.
本课题基于无位置传感器技术，对应用于空调压缩机的无刷直流电动机系统做了一定的理论分析并进行了设计与实验测试。
3·Detecting back EMF is one of the most important methods for the detection of rotor position in square wave current drive BLDCM sensorless control.
方波电流驱动的BLDC电机无位置传感器控制检测转子位置的最重要方法是反电动势检测法。