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It introduces a kind of novel loading test system, based on the operation principle of damper. this loading system is operated by the driving motor. it realizes the loading, in that the damper has a negative drive force that puts on the motor. Based on the ordinary electromagnetic damper, the thesis presents a novel hybrid excitation electromagnetic damper which has adjustable work characteristic, analyses the working principle and structural feature of the electromagnetic damper, deduces the formulas to calculate the eddy current density through the Electromagnetic theory, analyses the distribution of the eddy current in the cotyloid rotor, and also studies the method of calculating the damp torque, establishes the mathematical model of the electromagnetic damper, analyses the relationship between the electromagnetic damper structural parameter and damp torque, researches the engineering design and analysis method of the electromagnetic damper, provides theory foundation for the design and analysis of the electromagnetic damper, contrives a hybrid excitation electromagnetic damper that satisfies the target request, designs a set of compound excitation electromagnetic damping loading control system whose control core is AT89C51 monolithic integrated circuit, analyses the electric circuit part, and carries on the experimental test to this set of electric circuits. Finally it debugs this electromagnetic damping loading system, this system satisfies the target request proposed.

论文提出了一个全新的加载测试系统种类，该加载系统是在阻尼器工作原理基础上，利用电动机拖动阻尼器运转，从而阻尼器产生一个与运动方向相反的阻尼力矩，该力矩作用在电动机上实现对电动机加载测试；同时，论文在一般电磁阻尼器基础上提出了一种新型的可调式复合励磁电磁阻尼器结构，该种阻尼器的工作特性在一定范围内可进行调节；论文分析了电磁阻尼器的工作原理和结构特点，运用电磁场理论分析推导了电磁阻尼器的涡电流密度公式，分析了涡电流在转子杯内的分布图，并对阻尼力矩计算方法进行了研究，建立了电磁阻尼器的数学模型，分析了电磁阻尼器结构参数和阻尼力矩之间的关系，对电磁阻尼器的设计和分析方法进行了研究，为电磁阻尼器的工程设计建立了理论基础；设计了满足技术指标要求的复合励磁电磁阻尼器和一套以AT89C51单片机为控制核心的复合励磁电磁阻尼加载控制系统，对该控制系统硬件电路各部分进行了分析和设计，对软件进行了设计，并对控制电路进行了试验调试，该系统满足所提出的加载指标要求。

The structure character and operating principle of centrifugal compressor are introduced, which show that the rotor of compressor is trend to be damageable comparing to other components.

介绍了离心式压缩机的结构特征与工作原理，由此得出转子故障是主要故障形式，从而对其重点研究。

Hydraulic forces applied on the agitator are simplified as a main moment and a main force on the agitating shaft, Initial decentration of agitator is determined based on the balance standard. The dynamic responses, such as fluctuating bending stresses and dynamic deflections, of the agitating shaft under no-liquid and normal working conditions are studied.

将搅拌器上的流体作用力简化为一个主矩和主矢；为考虑作用在搅拌轴上的惯性力效应，根据平衡精度预设搅拌器的初始偏心；在转子动力学软件ROTOR中建立搅拌轴的梁盘模型，分别计算了搅拌轴在空载和搅拌工况下的动力响应，并进一步讨论了动力响应与工作转速、轴径和轴长的关系。

During the numeric model processes, the finite element method is used to build the discrete model and analytical theory of the rotor-bearing system. The entire system is divided into several dividable substructures, each of which develops individual systematic mathematic model. Finally, the motion equation of whole structures is combined by the integrity of the dynamic variables and force balances on connections of each substructure.

在数值建模过程中，以有限元素法为基础，建立转子-轴承系统之离散模型与分析理论，将整个系统结构划分成若干个可分离部位的子结构系统，并发展子结构的个别系统数学模型，最后整体结构的运动方程式再以各子结构结合面上节点的动态参数一致性及力系平衡进行结合。

A dual-input clutch transmission is provided having a torque converter with a rotatable hub, the transmission comprising a transmission pump having internal fluid channels and a rotor set which is drivingly connected to the hub, and a dual-input clutch in fluid communication with the transmission pump through the fluid channels.

本发明提供一种双输入离合器变速器，其具有带有可转动毂的变矩器，该变速器由带有内部流体通道的变速器泵，以驱动的方式连接到毂的转子组，和通过所述流体通道与变速器泵流体连通的双输入离合器组成。

Within a cam ring ( 8 ), a rotor having a plurality of vanes ( 27 ) is eccentrically disposed.

在凸轮环(8)之内，偏心地设置具有多个叶片(27)的转子。

Here it can be seen clearly that the inner rotor rotates about its center, but the outer envelope is mounted eccentrically.

在这里可以看出，明确表示，内转子旋转，其中心，但外膜安装偏心。

The engine uses a three-lobe rotor that rotates eccentrically in an oval housing.

这种发动机采用一个在椭圆形外壳内偏心旋转的三角转子。

This paper analyses the working principle of AMB firstly , then derive the relationship between electromagnetical power and rotor displacement under the single degree of freedom,and a mathmatical model is established at last.

本文分析了电磁轴承的工作原理，其中检测部分采用无传感器转子位移自检测模式，这样既减少了成本，也优化了控制性能，是未来的发展方向之一。

The maximum speed is only limited by the material intensity of the rotor. So the AMB fits some execrably environments, such as high speed, vacuum super clean, etc.

磁轴承的功耗和噪声极低，能适用于多种复杂的应用环境，特别适合在高速、真空、超洁净等环境中使用。

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％。