转子

Considering the special features of rotor system, the feasible direction and iterating step factor are reasonably determined.

建立了一个两跨三支承实验台转子系统，根据计算选用了初始与优化两组不同的轴承参数作为对比。

Objective To investigate the effect of Richards pins on treatment of femur intertrochanteric fracture.

目的 探讨Richards钉对股骨转子间骨折的治疗作用。

Abstract］ Objective To study the effect of variant internal fixation for intertrochanteric fracture of femur.

目的 讨论股骨转子间骨折不同内固定方法的临床疗效。

Both stator and rotor are made of ferromagnetic materials.

定子和转子都是由铁磁材料构成。

In simplified terms, an inductor dynamometer consists essentially of a rotor, stator and toroidal field coil.

简单的说，感应式测功机主要由转子，定子环向场线圈组成。

Using the ESG with eight electrodes, the paper gave the formulas of electrode capacitances, introduced the detection and solution of rotor motion, and then deduced the formulas of electric field forces.

八电极静电支承系统沿着四个非正交轴对转子施加静电力，这些作用力相互影响，因此需要对支承坐标进行垂直解耦。

Firstly, according to electromagnetic field theory, the 2-dimensional (2-D) mathematical model of a three phase squirrel-cage Y802-2 induction motor is developed. Then general equations can be deduced from finite element discrete and functional analysis. The motor's 2D solving region of electromagnetic field is given based on the boundary conditions and assumption conditions of the squirrel-cage induction motor. Through finite element mothod and inner–outer convergence method, magnetic field distributions and magnetic forces of bars can be calculated in following rotor conditions: health rotor, one single broken bar, two adjacent broken bars, two broken bars with one good interval, two broken bars with two good interval and four adjacent broken bars.

本文首先根据电磁场理论建立Y802-2型三相笼型感应电动机二维电磁场的数学模型，并对其进行了有限元离散以及泛函分析，推导出总体方程；在基本假设和边界条件基础上，给出笼型感应电动机二维电磁场的求解区域，然后应用有限元并结合内外双收敛方法，对样机稳态运行进行数值计算，得出电机在转子完好、一根导条断裂、连续两根导条断裂、间隔一根两根导条断裂、间隔两根两根导条断裂及连续四根导条断裂六种情况下的磁场分布和导条所受电磁力的变化情况。

In the absence of pulse input, the power of incentives in the winding gap magnetic field under the rotor can maintain the original location in the targeted state.

在没有脉冲输入时，在绕组电源的激励下气隙磁场能使转子保持原有位置处于定位状态。

Permanent magnet synchronous motors have been widely used as AC drives over the last two decades due to their high efficiency, high power density and no dc field winding in the rotor. It is well known motion control of PMSM requires accurate position and velocity signals to realize field orientation.

永磁同步电动机由于无需励磁电流、运行效率和功率密度都很高，在过去的二十年里已被广泛地应用在交流调速传动中，但它的高性能控制需要精确的转子位置和速度信号去实现磁场定向。

In addition, equivalent series reactance of excitation transformer worsens the condition of the thyristor operation, and it can bring transient over-voltage at the moment of switching thyristor. The transient over-voltage will endanger the field winding.

励磁变压器的串联电抗恶化了晶闸管的换相工作条件，并在晶闸管元件导通与关断瞬间引起危及到转子励磁绕组安全运行的过电压。

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％。