转子的

Comparing the unsteady flow fields obtained by CFD with the measurement results with SPIV, it can be found that the CFD results can capture the main characteristics of the flow fields observed in the experiment results, however, the precision of the CFD needs to be further improved, and to predict the detail flow structures, such as the tip leakage vortex in the compressor rotor, by CFD still has some difficulties, thus, some work should be done to improve the turbulence model for more accuracy prediction of the flow fields by CFD for the complex flow in turbomachinery.

定常计算结果和非定常计算结果都不能很好地反映出转子叶尖泄漏流，转子尾迹和泄漏流在静子通道中的演化，及其与静子的相互作用等复杂流动情况。开展叶轮机适用的湍流模型研究，对于提高叶轮机内部复杂流动数值模拟的准确性具有非常重要的价值。

To control speeds for a typical alternating current motor, we usually take control variables (to change voltage and frequency of the stator power supply) from the stator side in an electric motor, which is also the only way for squirrel-cage asynchronous motor with rotor in a short-circuit state.

对于一般交流电动机的调速，我们都是从电动机的定子侧引入控制变量（改变定子供电电压、频率）来实现的，这对于转子处于短路状态的交流鼠笼型转子异步电动机是唯一途径。

The dissertation has drawn the achievements which are helpful to mechanical fault diagnosis from the research of nonlinear rotordynamics. A detailed theoretical analysis is made for subharmonic and superharmonic resonances of weak nonlinear Jeffcott rotor systems, and an experiment is done to verify theoretical conclusions.

总结归纳了国内外转子系统非线性动力学研究中业已获得的可资机械状态监测与故障诊断领域借鉴的成果；对弱非线性Jeffcott转子系统的次谐波和超谐波共振以及参数的影响，进行了详细的理论分析和实验研究。

A new multi-degree of freedom ultrasonic motor using in-plane deformation of lead zirconate titanate elements was introduced.

介绍了一种新型基于压电陶瓷平面内应变特性的多自由度超声波电机，该电机通过两个平面内的弯曲振动模态的叠加实现转子绕Z轴的转动；并利用伸缩振动模态分别与上述弯曲振动模态叠加实现转子绕X轴和绕Y轴的转动。

ZG rotating bed consists of mono-or multi-rotors.Gas and liquid flow zigzag through the rotors countercurrently and carry out mass transfer.In ZG rotating bed,gas and liquid contact intensively,and the mass transfer rate can be increased greatly.It is a breakthrough for traditional plate and packed columns.ZGrotating bed of 1.5 meter high can achieve the separation ability which traditional plate of packed columns of 15 meters high can achieve.

该设备由一个或多个高速旋转的转子组成，气液以逆向折流方式流经转子，进行接触传质，1.5米高的ZG系列超重力精馏机相当于15米高的常用精馏塔，是对传统的板式塔、填料塔的重大突破，由国家级专家组鉴定，产品达到国际先进水平（专利号：ZL011343214）。

A method is also provided for reducing axial space within a dual-input clutch transmission having a torque converter, including providing an on-axis transmission pump with a housing and rotor set, providing a torque converter with a rotatable hub which is drivingly connected to the rotor set for powering of the transmission pump, and mounting the dual-input clutch to the pump housing for support.

还提供一种方法以减少带变矩器的双输入离合器变速器的轴向空间，包括提供带有壳体和转子组的同轴变速器泵，提供带有可旋转毂的变矩器，所述可旋转毂以驱动的方式连接到转子组以为变速器泵提供动力，并且将双输入离合器安装到泵壳体上以支撑。

In the model of ball bearing, three nonlinear factors were considered, such as the clearance of bearing, nonlinear Hertzian contract force between balls and races, and the varying compliance vibration because of periodical variety of contact position between balls and races.

在滚动轴承模型中，充分考虑了滚动轴承的间隙、滚动轴承的滚珠与滚道的非线性赫兹接触力及由滚动轴承支撑刚度变化而产生的VC振动，在转子系统中考虑了由于转子质量偏心而产生的不平衡力。

The Hilbert amplitude envelope of the stator current includes the low frequency of fault characteristic, thus it can reduce the signal length by resample the Hilbert amplitude envelope of the stator current by downsampling, which can avoid spectrum aliasing. Then it can reduce the computation time of the MUSIC Method for the spectrum analysis to the resampled signals for the given bandwidth. Meanwhile combining continuous subdivision Fourier transform and rotor slot harmonics based slip estimation it can in advance estimate the concrete values of the fault characteristic frequency, and then inquiry purposely the fault feature component information in the stator current spectrum in order to accomplish the broken rotor bar fault with high sensitivity and h reliability, which eliminates adverse effect of issuable false peaks to the fault detection and formed a novel scheme to detect broken rotor bar fault.

定子电流Hilbert幅值包络信号包含了低频的故障特征频率调制信号，故通过对定子电流Hilbert幅值包络信号进行降采样率重采样、减少分析信号长度，可避免低频段频谱混叠，再对减少的重采样数据进行具有超分辨率的MUSIC低频段估计，可大大降低MUSIC算法频谱估计时间；运用连续细化傅里叶变换和转子齿槽谐波转差率估计技术，可预知故障特征频率精确值，从而可有目的地查询故障分量，消除MUSIC虚假波峰对故障检测混淆的影响，大大提高了故障检测的灵敏度和可靠性，以此形成异步电动机转子断条故障检测新方法。

Considering the state of open-phase and asynchronous operation in largepower unit, the magnetomotive force and harmonic current of stator and rotor aretheoretically analyzed. A fault simulation test is designed, which proves the theoreticalconclusion correct. Finally, in this thesis, the problems with open-phase protection andbreaker failure protection are discussed, and the improved scheme of protection ispresented.

对发电机组非全相异步电动运行状态下，定子绕组与转子绕组磁动势以及谐波电流进行了详细的研究，通过磁动势的矢量分解等方法，得出了电枢绕组电流不对称时磁动势的空间分布，推导出了各次谐波电流在定子绕组、转子绕组及相互间的感应关系；通过试验验证了理论分析结果的正确性。

It is shown that because of the high nonlinear of oil film force of SFD, the nonsynchronous response and the bistable operation may occur in the rotor-SFD system, especially the latter with high vibration amplitude, which has a great effect on the reliability of the rotor system.

结果说明了由油膜力的高度非线性所引起的非协调及双稳态，特别是当转子需要频繁的通过双稳态区时，双稳态跳跃将使转子系统的振动迅速增大，在实际应用中应对其引起足够的重视。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。