电机的

Cable reel motor torque constant tension which has the characteristics When the load increases in the motor output shaft speed will automatically come down, volume Rao assured when cable tension unchanged. Rao nature of this excellent performance closely integrated with the Volume; Cage used motor hysteresis coupling increases in size, functionality, easy installation, the constant tension similar characteristics, we can under the conditions required output torque. They can pull the cable external circumstances, hysteresis coupling protect cables; using torque motor controller to increase frequency hysteresis couplings Surge part because of the cable reel SCR converter using a new technology operation, smoothing adjustments to the motor terminal voltage, thereby ensuring that the output torque of the motor unchanged. so that the cable can smooth the road with the truck

其中力矩电机电缆卷筒具有恒张力的特点，当负载增加时电机的输出轴转速能自动随之降低，保证电缆卷饶时张力不变，这个优越的性能与卷饶性紧密结合；采用笼型电机加磁滞式联轴器具有体积小，功能全，安装维护方便，近似恒张力等特点，既可以根据工况需要输出力矩，又可以在电缆受外力拉住的情况下，通过磁滞式联轴器保护电缆；而采用力矩控制器加变频电机加磁滞式联轴节的电缆卷筒因其调压部分采用可控硅变流新技术，可以平滑地对电机的端电压进行调节，从而保证了力矩随负载的变化而改变，使电缆能平稳的跟大车的行进。

The main dimensions are calculated by magnetic track, then the fields of load and without load are computed by 2-d FEM and references of the motor are obtained, so the structure of the motor can be adjusted.

用磁路设计法确定电机的主要尺寸，然后用二维有限元法计算电机的空载和负载磁场分布，得到电机的参数和性能，根据性能要求对电机结构尺寸调整。

In view of special applications of multi-pole magnetic permanent torque motor used for precise numerical control rotary table, motors with higher torque density and lower torque ripple s are needed.

针对精密数控转台伺服直接驱动用多极永磁力矩电机的特殊应用问题(要求电机有较大的转矩密度且较小的转矩波动)，在分析该种电机的特殊结构的基础上，提出一种新型不等齿顶宽结构，以提高绕组利用系数，加大电机的转矩密度；并采用转子斜极的方法，可在有效消除转矩波动的同时，电机仍保持较高的绕组利用系数。

In view of special applications of multi-pole magnetic permanent torque motor used for precise numerical control rotary table, motors with higher torque density and lower torque ripples are needed.

针对精密数控转台伺服直接驱动用多极永磁力矩电机的特殊应用问题(要求电机有较大的转矩密度且较小的转矩波动)，在分析该种电机的特殊结构的基础上，提出一种新型不等齿顶宽结构，以提高绕组利用系数，加大电机的转矩密度；并采用转子斜极的方法，可在有效消除转矩波动的同时，电机仍保持较高的绕组利用系数。

By comparing DC, AC and step-motors and analyzing the driving characteristics of the warp beam, a conclusion was drawn that a higher performance to price ratio could be got when a step-motor was selected for the warp beam.

通过对直流电机、交流电机和步进电机的比较，结合织机的织轴驱动特点，得出选用步进电机有较高性价比的结论。

The work of this paper is as follows: 1. Looking back the progressing history of the linear motor, introducing the features of the elevator driven by linear induction motor, radicating the topic of this paper "the digital frequency variable control of the elevator bi-side direct driven by linear induction motor". The research of this paper covers the conventional VVVF control, space vector based VVVF control, vector control and DTC.

本文主要开展了以下几个方面的工作： 1 回顾了直线电机发展历史，电机的驱动技术演变，特别是针对直线电机的驱动，简要介绍了直线感应电机驱动电梯的优点和不同结构类型，对传统的v／f控制，基于空间矢量法的v／f控制，矢量控制，和基于电压空间矢量的直接转矩控制进行了比较，确立了本课题的研究主题：直线感应电机双边直推式驱动电梯的全数字变频控制。

With the motor technology developing, many different type motors are applied wider and wider, such as the Frequency Motor and Synchronal Perpetuation Magnetism motor, so higher quality motor test system is required.

随着电机技术的发展，多种类型的电机得到越来越广泛的应用，比如变频电机和同步永磁电机的应用，从而对电机的测试系统的要求也越来越高。

A steady state model and equivalent circuits of a 15-phase induction motor , based on conventional generalized theory of electrical machine and symmetrical component method , is presented in this paper . Evaluation of steady state performance characteristics of the machine with multiphase stator windings open circuited is addressed .

基于通用电机基本原理和对称分量法，对十五相感应电机在定子绕组多相开路时的稳态电流和转矩特性进行了分析，由十五相感应电机的稳态等效电路，采用数值求解方法获得了多相定子绕组开路时电机各稳态相量。

If the panel lights and there is no abnormal sound, then open the shell in the Add CD-ROM after the power to observe the work of the leading motor, if motor-led movement, it is necessary to check the motor lead normal power supply, motor drive belt whether the slip and fracture.

如果面板灯亮并且没有异响，那么打开外壳在加电后放入光盘，观察主导电机的工作情况，如果主导电机无动作，就要先检查主导电机的电源供给是否正常、电机的传动皮带是否打滑、断裂。

A motor shaft is arranged in the middle of a motor; the motor shaft is connected with the lower bracket by a connecting plate; the upper bracket is provided with a plurality of radiating holes; a flange of the lower bracket is formed at the external edge of the lower bracket and an axial hole is formed in the middle of the lower bracket.

本发明公开了一种吸尘器电机支架结构，包括上支架和下支架，在电机的中间设有电机轴，电机轴通过连接板与下支架连接，在上支架上形成多个散热孔，在下支架的外缘形成下支架凸缘，在下支架的中间形成轴孔。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。