A new method controlling the speed of a motor by using the rotor frequency of a wound-rotor asynchronous motor is introduced.
介绍了利用绕线转子异步电动机转子频率控制电机转速的新方法。
The Pulse Generators PGs are equipped to detect the rotor frequency of induction traction motors for the torque control in railway vehicle traction field.
铁道机车车辆牵引领域中的转矩控制是利用脉冲发生器（PG）来检测牵引感应电动机的转子频率。
If the rotor speed is close to the frequency of the rotor system, the resonance phenomenon will occur.
假设转子的转速与其轴系本身的频率比较接近时，设备将会出现共振现象。
Now commonly used servo motor is ac servo motor, the axial end in motor with photoelectric encoder, by examining the rotor Angle to frequency conversion control.
目前常用的伺服电机是交流伺服电机，在电机的轴端装有光电编码器，通过检测转子角度用以变频控制。
Calculations were conducted of the fan rotor natural frequency, vibration modes and critical speeds.
本文针对风机转子进行了固有频率振型和临界转速计算。
A method, based on analysis of time domain and frequency domain, applied in dynamic balance of hydro-generator rotor is presented.
提出了一种基于时域分析和频域分析的动平衡方法，应用于水轮发电机转子的动平衡。
The expression and frequency variety law of the rotor broken bar fault feature component in the startup electromagnetic torque signal are analyzed in detail.
分析了转子断条故障特征在电机启动电磁转矩信号中的表现形式及频率变化规律。
Properties of free vibration were analyzed for simplified geared rotor, and the main factors of influence on eigen frequency were also analyzed.
针对齿轮耦合的简单平行转子系统，研究了固有振动的特点，分析了影响固有频率的主要因素。
The rotor bar resistance and slot leakage inductance considering frequency effect are gotten by mean of bar loss calculation and leakage magnetic field energy calculation.
通过直接计算导条损耗与漏磁场能量得出了计及频率影响时转子导条电阻与转子槽漏感。
The bending vibration characteristic of a nonlinear cracked rotor is then analyzed. The time frequency characteristics of a cracked rotor after entering double cycle bifurcation are introduced.
然后研究了非线性裂纹转子的弯曲振动特性，给出了进入倍周期分叉后裂纹转子的时域特性和频域特性。
The frequency changing start up process of generating unit actually is a synchronous driving process under the action of electromagnetic moment of the stator and rotor of motor.
机组变频起动过程，实际上是电动机依靠定子和转子的电磁力矩作用的同步驱动过程。
The frequencies of these disturbances are approximately in proportion to rotor speed and the relative frequencies are 5 and 8 respectively in terms of rotor rotating frequency.
这两个特征扰动的扰动频率与压气机转速成正比，与转子转动频率的相对频率分别等于5和8；
Its natural frequency falls into two parts when the loads exerted on generator rotor are asymmetrical. Dual resonance phenomenon appears based on the former single frequency vibration.
当发电机的外接负载不对称时，转子的固有频率一分为二，转子的振动在原来单频振动的基础上，产生了双重共振现象。
Numerical methods were utilized to investigate the time-dependent flow patterns and the frequency characteristics of unsteady tip clearance flow in an axial-flow low-speed isolated compressor rotor.
利用数值方法研究了某低速轴流孤立压气机转子中非定常叶顶间隙流的流动特征和频率特性。
This paper presents an indirect method, in which frequency response transfer function matrices are analytically and experimentally determined respectively, using linear rotor models.
本文中提出了一个间接方法，利用线性转子模型，分别用理论分析和试验方法确定系统的频响(传递)函数矩阵。
Moreover, because the intensity of vortex shedding in the wake of the guide vane is too weak, it's frequency has no influence on the vibration characteristics of the low-pressure compressor rotor.
同时由于导流体尾迹内部脱落涡强度太低，其脱落频率也不会对发动机低压转子振动特性产生影响。
The frequency response function was a function of stiffness and damping when a rotor vibrated, so a proper adjustment of stiffness and damping could reduce the vibration amplitude.
转子振动时其频响函数是其刚度和阻尼的函数，调节合适的刚度和阻尼，可以抑制转子振动。
Experimental results show that under the effect of the rotor wake, the dominant frequencies of pressure fluctuations on stator blades are the rotor blade passing frequency (BPF) and its harmonics.
实验结果表明：在转子尾迹的影响下，静子叶片表面的波动频率是转子的尾迹频率及其倍频。
For labyrinth seals, the effect of the vibration frequency of rotor on the rotor dynamic coefficients is analysed in this paper.
对迷宫汽封转子振动频率对转子动特性系数的影响进行了分析。
Natural frequency of tail rotor of some kind of helicopter with uncertain composites was studied.
研究具有不确定复合材料参数的某型直升机尾桨的固有频率。
By assuming impedance values of the coupling points, the critical speeds of the rotor subsystem can be determined from its frequency equation.
将弹性支承轴系分为转子子系统与支承子系统，假定在交联点处的位移阻抗值，则可由频率方程序确定转子子系统的临界转速。
And the inductances of a prototype were measured at different test frequency and with taper rotor at different axial locations.
通过实验测试了在不同频率及转子在不同轴向位置时电机的交直轴电感。
This paper describes a method to extract the low frequency component from rotor startup signal based on empirical mode decomposition, which overcomes the difficulties of traditional filter methods.
针对传统滤波方法处理非平稳信号的不足，提出利用经验模态分解法来处理转子启动信号，通过此方法的自适应滤波特性来提取这类信号中的低频分量。
The results show that the violent flexible vibration will happen if the motivation frequency equals to the natural frequency of the rotor.
结果表明，当外加激励的频率等于转子的固有频率时，将诱发转子产生大幅的轴向挠性振动。
Because of oscillation of the blower load the variation of angular velocity of the blower rotor and beats in lower frequency are inevitable.
与风机负荷的波动相关，风机转子的角速度变化及相伴的低频拍振是不可避免的。
Increases in magnetic field frequency decreases the capability of the dis-type MR fluid damper to reduce rotor vibration.
随着磁场频率的增大，盘型磁流变流体阻尼器抑制转子振动的能力减小。
Finally, the paper simulated to the rotor initial point estimate method using DSP related tool and confirmed the accuracy of high frequency voltage signal method.
最后，利用DSP相关软件，对转子初始位置估算方法进行模拟仿真，验证了高频电压信号注入法理论的正确性。
Next, it puts forward a new permanent magnetism synchronous machine rotor initial point estimate method - High frequency signals injection method.
其次，探讨了一种新的永磁同步电机转子初始位置估算方法——高频电压信号注入法。
EA mounted on the either end of rotor shaft can generate impulse excitation force or simple harmonic excitation force with different frequency.
电磁激振器安装在转子的伸出端，产生脉冲激励力或不同频率的简谐激励力。
Commonly used servo motor is ac servo motor, the motor shaft with in the photoelectric encoder, by detecting the rotor Angle to frequency conversion control.
常用的伺服电机是交流伺服电机，在电机的轴端装有光电编码器，通过检测转子角度用以变频控制。
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