因此，研究无刷直流电机无位置传感器控制技术具有重要理论和实用价值。
Therefore, it has important theoretical and practical value to study position sensorless control methods for BLDCM.
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。
Detecting back EMF is one of the most important methods for the detection of rotor position in square wave current drive BLDCM sensorless control.
针对无刷直流电机在静止和低速状态下检测转子位置困难，提出了无刷直流电机采用无位置传感器控制策略时转子位置检测的一种新方法。
A novel method for detecting the rotor position of Senseless Brushless DC Motor was presented in view of the deficiency in rotor position detecting at standstill or low-speed.
因此，在一些特殊及精度要求不高的场合，由只根据采样电流、电压等易测量，通过特定方法估算转子位置和转速的无位置传感器控制策略将得到广泛应用。
Thus, sensorless control strategy which only according the sampling of the current and voltage to estimate the rotor position and speed by specific methods will be widely applied.
研究采用高频注入法的无传感器直接转矩控制系统，通过注入特定的高频信号来追踪电机转子的空间凸极效应，以此得到转子位置和速度值。
In the sensorless control system, a specified high frequency signal is injected in to trace the magnetic anisotropy of the motor, by which we can get the value of rotor speed and position.
永磁无刷伺服电机的换相和控制都需要准确的转子位置信息，然而位置传感器有其难以克服的缺点。
The exact rotor position is required while a permanent magnet brushless servo motor (PMBSM) is under commutation and control. Howere, position sensors have some fatal defects.
无刷直流电机电枢反应造成反电势法无传感器控制中的转子位置检测误差。
The armature-reaction in a sensorless brushless DC(SLBLDC) motor causes detection error of rotor position and consequently leads to advanced or lagged commutation.
研究了软件锁相环技术在陀螺用无位置传感器无刷直流电机稳速控制系统中的应用。
The software phase-locked loop (SPLL) technology in the steady speed control of permanent magnet brushless DC motor (BLDCM) in gyro was discussed.
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。
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.
ML4428就是一种无位置传感器的无刷直流电动机控制器，是目前较先进的，集成度高的控制器，文中作了较详细的介绍。
ML4428 is a typical permanent magnet BLDCM controller without position sensor; it is an advanced high integrated controller, which was described in detail in this paper.
论文在介绍常用的无位置传感器无刷直流电机控制方法的基础上，详细分析了“反电动势法”无刷直流电机控制原理。
In this paper the common methods of sensorless control of BLDCM are introduced, and the principle of back-EMF method is illustrated in detail.
基于凸极跟踪的思想，详细讨论了高频电压信号注入法在永磁同步电动机无位置传感器运行控制中的应用。
Based on the thought of salient pole tracking, the paper studied the application of this method in sensorless control of PMSM in detail.
本文设计了一个不使用位置传感器的无换向器电动机调速系统，采用MCS- 8单片机，实现了无换向器电动机的升降频控制。
A simple brushless motor variable-speed system without position sensors is designed, it is based on MCS-80C196KB and frequency raising-lowering control is realized.
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。
The emphasis of this paper is the commutation control of sensorless BLDC motor, which is used to drive Photovoltaic Pumps.
同时对无位置传感器的全导通电流斩波方案在开关磁阻发电系统中的应用进行了分析与研究。最后针对上述控制方案进行了较全面的实验验证。
Finally, two novel control schemes, exciting voltage control and full conducted current chopping control, are discussed in detailed and proved by tests of SRG prototype system.
然后分析研究无位置传感器无刷直流电机控制系统的几项关键技术：转子位置检测、启动和PWM控制技术等。
And then it studies a number of key technologies around the sensor less brushless DC motor control system: Rotor position detection, motor starting and the PWM control technology.
现阶段无位置传感器无刷直流电机成为理想选择并具有广阔的发展前景，但它的控制电路相当复杂。
Senseless brushless DC(BLDC) motors become an ideal choice presently and have a prosperous prospect, but the controlling circuit is quite complex.
无刷直流电机的换相和控制都需要准确的转子位置信息，然而安装转子位置传感器有其难以克服的缺点。
The exact rotor position is required while a brushless DC motor (BLDCM) is under commutation and control. Howere, posi2 tion sensors have some fatal defects.
本文采用反电动法控制永磁直流无刷电机，是通过检测反电动势过零点获得转子位置实现无传感器控制。
Using Back-EMF method to control BLDCM, it can realize sensor-free control method by detecting the zero point of EMF in this paper.
本文采用反电动法控制永磁直流无刷电机，是通过检测反电动势过零点获得转子位置实现无传感器控制。
Using Back-EMF method to control BLDCM, it can realize sensor-free control method by detecting the zero point of EMF in this paper.
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