Torque ripple suppression was the research focus of permanent magnet brushless motor, domestic and foreign experts and scholars had proposed lots of solutions for the problem.
抑制转矩脉动是永磁无刷电机研究重点，国内外专家学者提出了诸多解决方法。
And also it brings torque ripple problem.
但同时也带来了转矩脉动问题。
The control signals of invertor are produced by space vector modulation to achieve a small torque ripple and constant switch frequency.
以空间矢量调制方法来获得逆变器的开关信号，实现了小的转矩脉动和恒定的开关频率。
Analysis and experiment show that the topology can detect motor's torque current simply and effectively and has magnificent significance to reduce torque ripple of motor.
分析和实验证明，该拓扑能够简单、有效的检测出电机的力矩电流，对抑制电机转矩脉动具有重要意义。
Four PWM modes used in the brushless DC motor control system are introduced and their different influences on the commutation torque ripple of BLDC motors are analyzed in detail.
介绍了无刷直流电机控制系统中的四种PWM调制方式，详细分析了四种不同的调制方式对无刷直流电机换相转矩脉动的影响。
The results indicate that the proposed controller is capable of maintaining the torque switching frequency constant and reducing the torque ripple, particularly at low speed.
结果表明提出的控制器可以保持开关频率恒定，并降低了转矩脉动，尤其在低速时。
Firstly, discussion focuses on configuration of BLDCM, and its running principles as well as necessary existence of torque ripple when current commutes.
本文首先从BLDCM的结构出发，介绍了其工作原理，并从理论上给出了BLDCM在电流换相过程中转矩脉动存在的必然性。
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.
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 torque ripple reduction methods of SRM are further discussed in this paper.
本文围绕开关磁阻电机的转矩脉动抑制，进行了深入研究。
As a result, searching for the practical torque ripple reduction methods has become one of the focuses in the research field of Switched reluctance motor.
因此，探索实用的降低开关磁阻电机转矩脉动的控制策略成为当前开关磁阻电机研究领域的热点之一。
The simulation results show that this method can reduce the torque ripple of SRM largely, and the control effect of lower speed is more obvious than higher speed situation.
仿真结果表明，本文提出的方法很大程度上降低了开关磁阻电机的转矩脉动，低速时的控制效果较高速时更为明显。
Simulation on the torque and the speed of switched reluctance motor shows that the control technology can effectively reduce the torque ripple of the motor, while improving the system response speed.
仿真结果表明，离散滑模变结构控制技术能有效地降低开关磁阻电机的转矩脉动，并且可以提高系统的响应速度。
Finally, a solution to restraining the harmonic current and ripple torque is suggested, ie a larger modulation frequency ratio of 3k is to be adopted, as it is used in SPWM.
文中还提出了抑制谐波电流和脉动转矩的方法，如在SPWM生成中，采用较大的3的整数倍调制比。
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.
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。
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。
Aiming to minimize the torque ripple in condition of non-perfect BEMF waveform, the dissertation present a optimum current tracking control technique.
针对这种反电动势波形偏离理想波形的情况，本文提出了一种最优电流跟踪法来抑制转矩脉动。
This paper introduces Commutation torque ripple process of the axial blood pump of an artificial heart brushless DC motor.
介绍了人工心脏轴流式血泵永磁无刷直流电机换相转矩脉动变化过程。
This paper addresses the problem of torque ripple minimization in permanent magnet synchronous motors (PMSM).
主要讨论了正弦波直流无刷电动机转矩纹波最小化问题。
The voltage and flux errors at the sampling instant can then be compensated for in the next control period, so the errors are always kept small, which leads to small fluxes and torque ripple.
由于采样时刻的电压和磁链误差，可在下一个控制周期内得到补偿，因此转矩和磁链的误差始终很小，二者的脉动很小。
Applying discrete duty ratio control technology into direct torque control can reduce the ripple, and keep the feature of simplicity.
采用离散占空比控制技术的直接转矩控制能够在减小输出转矩脉动的同时保持算法简单的特性。
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，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 in 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。
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.
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。
It has been shown to provide a simple solution to control the torque and the speed of the motor and to minimize torque ripple.
事实证明它能很容易的控制电机的转矩和转速，并能减小转矩脉动。
Current fluctuation is analyzed during coil commutation time and electromagnetic torque is computed and method is given to restrain ripple of electromagnetic torque.
对绕组换相时电流波动进行了分析，并计算了电机电磁转矩，给出了抑制电磁转矩脉动的方法。
But the torque ripple characteristics are different and the nonlinear modeling method is more accurate, it is helpful in the study of torque ripple problem.
但转矩脉动特性有所不同，非线性电感模型较分段线性电感模型准确。因此非线性电感模型适用于分析电机的转矩脉动特性。
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.
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。
Due to the large torque ripple of direct torque control in low speed range, a torque Angle adjustor based on fuzzy neural network and PI control was adopted to improve the control effect.
针对直接转矩控制低速时转矩脉动大的问题，采用基于模糊网络与PI控制结合的转矩角调节器来改进控制效果。
To reduce the low speed torque ripple of induction motor based on direct torque control (DTC), a new control strategy-improved discrete space vector modulation is proposed.
针对传统的异步电机直接转矩控制在低速时存在转矩脉动较大的问题，提出了一种减小转矩脉动的直接转矩控制方法。
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.
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。
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