Reduced torque pulsation; Lower noise in start-up and operation process.
转矩脉动减少，起动和运行噪音更低。
Reduced Torque Pulsation, thereby reduces noise in start-up and operation process.
转矩脉动减少，起动和运行噪音更低。
In software, the method of reducing commutation torque pulsation is brought into effect.
软件设计中采用了换相转矩脉动抑制方法。
But it has the disadvantages of torque pulsation, it can't achieve accurate position and speed of higher performance.
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.
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。
Classical direct torque control method adopts the technique of 6 polygon flux linkage voltage modulation. It will generate torque pulsation and harmonic interference.
传统直接转矩控制技术采用的六边形磁链电压矢量调制方法，这会引起较大的转矩脉动和谐波干扰。
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.
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。
It can ensure that the controlled system tracks rapidly the reference voltage within the scope of the given saturation voltage, while torque pulsation can be attenuated effectively.
数值实验显示该控制器具有很好的普适性，以及此系统能快速跟踪额定电压范围内的参考电压，转矩脉动能被有效抑制。
At the same time torque pulsation in circuit commutation is analyzed and researched chiefly, and overlapping commutation technology is offered in order to reduce this torque pulsation.
同时，着重对电流换相时所引起的转矩脉动进行了研究，发现采用重叠换相技术可减小这种转矩脉动。
By the analysis, we can obtain the phase change process to cause the torque pulsation primary factor theoretically, and introduced that reduced the phase change torque pulsation the method.
通过分析，在理论上得到了换相过程引起转矩脉动的主要因素，并介绍减小换相转矩脉动的方法。
This paper simulates and analyses the torque pulsation because of the modulation frequency and speed variation under ambipolar pulse width modulation, at the same time the results are given.
本文对双极性调制的无刷直流电动机仿真分析了转速和调制频率对转矩影响同时给出仿真结果。
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。
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.
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 addition, this structure also reduces the motor torque variation and thereby minimizes pulsation.
此外，这种构造也降低了电机的转矩的变化，从而增加脉动。
Frequency of torque signal is consistent with that of force vibration. Amplitudes of radial pulsation signal increases as tapping continues.
扭矩信号的频率与外加振动频率相一致，径向跳动信号随攻丝过程的持续进行逐渐变大。
Frequency of torque signal is consistent with that of force vibration. Amplitudes of radial pulsation signal increases as tapping continues.
扭矩信号的频率与外加振动频率相一致，径向跳动信号随攻丝过程的持续进行逐渐变大。
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