针对基于直接转矩控制的感应电动机在低速运转时存在较大的转矩脉动问题，该文提出一种新的控制方法。
Due to the large torque ripple of inductance motor based on direct torque control, especially at a low speed, this paper proposes a new control strategy.
针对基于直接转矩控制的感应电动机在低速运转时存在较大的转矩脉动问题，提出一种新的控制方法。
Due to the large torque ripple of inductance motor based on direct torque control, especially in a low speed, this paper proposes a new control strategy.
针对基于直接转矩控制中的感应电动机在低速运转时存在较大的转矩脉动问题，提出了一种新的控制方法。
For the large torque ripple of inductance motor based on direct torque control, especially at a low speed, this paper proposes a new control strategy.
因此，对无刷直流电动机的应用，必须考虑其转矩脉动的抑制问题。
So the compensation of pulsating torque is very importance for the application of PMSMs.
因此脉动转矩对电动机起动影响很小。
Therefore, Pulsating torque has very little effect on the starting of motor.
针对平均转矩控制的开关磁阻电动机(SRM)转矩脉动大的问题，提出了一种瞬时转矩控制的方案。
To overcome the disadvantage of higher torque ripple in switched reluctance motor (SRM) based on average torque control technique, one method of instantaneous torque control is presented.
依据永磁无刷直流电动机的数学模型及其转矩特性，分析了转矩脉动产生的多种原因，并介绍了各种有效的控制策。
According to the mathematical model and torque characteristics of permanent magnet brushless DC motor, the reasons that give rise to torque ripple have been analyzed in this paper.
脉动转矩的准确计算是爪极永磁同步电动机优化设计的基本前提之一。
The accurate calculation of cogging torque assists in optimizing the design of claw pole permanent magnet synchronous motors.
实验证明该方式对于减小直线电动机推力脉动，降低噪音是有效的。
The experiment proves that the mode is effective to reduce the pulsation and the noise of linear motor.
开关磁阻电动机的转矩是各相电流与转子位置的高度非线性函数，这使得电动机的转矩容易出现脉动。
The torque of switched reluctance motor is a highly non linear function depends on phase current and rotor position, so the torque ripple occurs.
本文从永磁无刷直流电动机的基本工作原理出发，分析了引起转矩脉动的原因并建立无刷直流电动机的动态数学模型。
From the basic operation principles of the permanent magnet brushless DC motor, this paper analyses the producing reasons of torque pulsation and establishes the mathematical model.
针对无刷直流电动机的转矩脉动，提出采用不同的PWM调制方式以及不同的重叠换相角减小换相电流所引起的转矩脉动。
According to torque ripple of brushless DC motor, the different PWM modulation mode and overlapping commutation method are used to minimize torque pulsation when current commutation is considered.
同时它与二相和四项混合式步进电动机相比较也显示了具有较高的电机运行频率和较小的转矩脉动的优点。
Simultaneity by comparison it with two-phase and four-Phase hybrid stepping motors, also displayed its advantages of higher motor action frequency and Iower torque p...
设计电压型PW M变频器时死区时间的设定会造成输出谐波增加、负载电动机转矩脉动，严重时甚至引起电动机震荡。
In the design of voltage PWM inverter, the existence of dead-time will arouse the in-crease of output harmonic, the pulsation of the motor torque, and even the oscillation of the motor.
但是，无刷直流电动机运行中存在转矩脉动问题，对实现更精确的位置和更高性能的速度控制有极大影响。
But the BLDCM has the disadvantages of torque pulsation, which is in the way of achieving accurate position and speed of higher performance.
分析了传统的PWM_ON调制方式对无刷直流电动机在非换相期间由于截止相的反并联二极管续流而导致转矩脉动的原因。
The torque ripple caused by diode freewheeling of the inactive phase during non-commutation state of PM brushless DC motor(BLDCM)when using the PWM_ON type of pulse width modulation was analyzed.
高速条件下，无刷直流电动机的电流换向产生严重滞后，导致转矩下降并伴随脉动。
Serious commutation lag occurs when a Brushless DC Motor (BLDCM) operates at high speeds, and this leads to torque decline with ripple.
主要对永磁无刷直流电动机换相过程进行理论分析，得到引起换相转矩脉动的原因。
The cause of producing the commutation torque ripple was mainly found by means of analyzing the commutation process of permanent magnet brushless DC motor in theory.
但是无刷直流电动机运行中存在转矩脉动问题，对实现更精确的位置和更高性能的速度控制有极大影响。
But it has the disadvantages of torque pulsation, it can't achieve accurate position and speed of higher performance.
永磁电动机本质上是一种含脉动激励的对称机构，将不可避免地产生振动和噪声，影响了电动机的性能。
Permanent magnet motor is essentially symmetrical structure with pulse excitation, so it inevitably has vibration and noise, which affects performance of the motor.
同时它与二相和四项混合式步进电动机相比较也显示了具有较高的电机运行频率和较小的转矩脉动的优点。
Simultaneity by comparison it with two-phase and four-Phase hybrid stepping motors, also displayed its advantages of higher motor action frequency...
本文对于反电动势波形接近正弦的永磁无刷直流电动机，提出一种基于六个离散位置信号的自同步svpwm控制方法，用于抑制电磁转矩脉动。
For the BLDCM which has a sinusoidal back EMF, this paper presents a self-synchronous SVPWM control method using six discrete position signals for minimizing torque ripple.
本文对于反电动势波形接近正弦的永磁无刷直流电动机，提出一种基于六个离散位置信号的自同步svpwm控制方法，用于抑制电磁转矩脉动。
For the BLDCM which has a sinusoidal back EMF, this paper presents a self-synchronous SVPWM control method using six discrete position signals for minimizing torque ripple.
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