电机的

It benefits to decrease the occurrence of accident and reduce the cost of maintenance.

提高电机的监测诊断水平，有助于减少事故发生，降低维修成本，对生产具有重大的意义。

According to the characteristic of the electric motor of the actuator, a simple and practical control algorithm is designed.

本文还根据电动执行机构驱动电机的特点，设计了一种简单，实用的执行机构控制算法。

Stepper motor is the working principle of electrical pulse signal into angular displacement of a Electromechanical Digital to Analog.

步进电机的工作原理是将电脉冲信号转换成角位移的一种机电式数模转换器。

For the power in case of a power failure, back electromotive force of a spindle motor can be utilized.

对于在电源故障情况下的电力，可利用主轴电机的反电动势。

The module can build assembly tree, bill of materials and the XML files and new assembly

以某电机的装配工艺规划为实例，通过运行所开发的功能模块，对相关研究内容进行了验证。

Due to the constraint of both high current and high speed, it is difficult to commutate for high-speed and high-current DC machine .

1前言 换向问题是直流电机的固有问题，换向过程十分复杂，影响换向的因数很多。

The main objective of this design is the completion of the stepper motor control.

本设计的主要目标是完成步进电机的控制。

Compared with Vector Control, the main advantage of DTC is that it directly controls flux and torque.

与矢量控制相比，直接转矩控制的主要优点是直接对电机的磁链和转矩进行控制。

At the last, the design method of two types of USM is introduced.

论文最后还介绍了两种新结构电机的设计。

The history and characters of USM, and the control method.

综述了超声电机的发展历史、特点和控制方法。

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。