电机的

The control system includes detector circuit, protection circuit, control and man-machine interface circuit, which makes full use of DSP resources for high reliability and simplified the construction of system. The fifth section provides system software design, In order to read and maintain easy, a microprogramming modular is adopted. A new control strategy of Fuzzy voltage PWM combined Fuzzy angle control is realized for improving motor s working efficiency. At the same time, it simplify control model of SRM, reduce cost. At last, the result of experiment testify it, the electric machine gain success of simultaneous electrify two phase loop, the timing range is

第五部分为系统软件设计，采用模块化设计，增强了系统的可读性与可维护性；根据SR电机的特点，实现了模糊变角度电压PWM控制，避免了在单纯电压PWM方式下，电机高速时效率下降较大的缺点，也避免了在采用电流斩波与角度位置复合控制时方式转换所带来的弊端，同时也简化了控制，降低了成本；最后给出实验结果，实现了电机的双相稳定运行和良好调速，调速比达40：1。

Because of the slip speed will change when the voltage of VVVF is changed, so we can control the slip speed by controlling the outport voltage of VVVF, A saving energy method of main driven motor of CNC machine tool which running in the defferent state of load is introduced in the paper .This method is realized by optimizing the slip speed in the defferent load state based on the adaptive neural network.

根据电机的转差率的变化，通过调节变频器装置的输出电压来控制电机运行转差率，并基于神经网络模型参考自适应的控制算法实现了交流异步电动机在不同负荷下最优转差率的控制，从而达到电机在不同负载下的节能运行。

From the basic principles of the AC machine,using the equivalent analysis method, a series of the equations、vector diagram、equivalent circuits of BDFM were obtained, which is the foundation of the analysis and control of the BDFM wind power generation system. The variable structure control was first used to the active and reactive power decoupling control of the BDFM.

无刷双馈电机的功率绕组、控制绕组、转子绕组的极对数不同，电流的实际频率也各不相同，论文从交流电机的基本理论出发，采用等效的方法，得到了无刷双馈电机的基本方程式、向量图和等效电路。

In order to obtain a nonlinear dynamic control law which has global stability,the "workless force" is abstracted to simplify the induction motor control using the passivity theory.

为了实现异步电机转速的全局稳定非线性动态控制，应用无源性理论从能量的角度分析异步电机，从中分离出不必抵消的"无功力"，简化了异步电机的控制，并据此导出一个全局稳定的非线性动态输出反馈控制律。

Permanent magnet synchronous motor drived by triphase sinusoidal current is research object in this paper. Its mathematics models are set up and the different control menthods are discussed, controlling Principles of flux linkage and torque are discussed under DTC and the block diagram of PMSM with DTC is Presented. At last the control mothod is proved correct using MATLAB simulation software.

文章以二相正弦波驱动的永磁同步电机为研究对象，建立了永磁同步电机的数学模型，对于不同的控制策略进行了对比分析，并深入探讨直接转矩控制中永磁同步电机的磁链和转矩的控制思想，给出控制方案，最后利用MATLAB仿真工具验证了控制方案的正确性。

I got higher grade in electrical engineering.. I was matriculated into department of Air-Conditioning

偏偏在大学分发的时候，因为电机考的比较好，填选电机的科系，而且取的还是电机的分支

Company specializing in the production of the special allowance from the state's expert Liu Kun personally presided over the country's own patented technology (Patent No. 992549590)¤ YTYY implicit Salient capacitive motor, the technology set-type motor and shaded pole motor running capacitor for one of the advantages, product structural design to break through the traditional design specifications, the adoption of innovative fixed-rotor structure, so that the magnetic properties of iron core be maximized, the motor is widely used in electric freezers, refrigerators, ice machines, range hoods, air conditioners, etc. supporting the use of household appliances with safety, environmental protection, energy saving and so on.

公司专业生产由享受国家特殊津贴专家刘新昆亲自主持的自有国家专利技术(专利号992549590)─YTYY隐凸极式电容电机，该技术集罩极式电机和电容运转式电机的优点为一体，产品结构设计冲破传统的设计规范，采用创新的定转子结构，使铁芯的导磁性能得到最大限度的发挥，该电动机广泛应用于电冰柜、电冰箱、制冰机、抽油烟机、空调器等家用电器配套使用，具安全、环保、节能等特点。

It has been tested that the current of VCM islinear to its displacement, and this testifies that the dynamic measurement method,getting the displacement of VCM by its current, is feasible.

实验结果表明电机中所通电流与电机的移动距离之间具有单调线性的关系，这说明了通过电流的大小和极性来确定音圈电机移动距离和方向的动态测量方法是切实可行的。

This gleam of the sexual relationships existence, adds step-by-step electric motor characteristics such as only having the cyclicity error but there being no accumulative error.

在非超载的情况下，电机的转速、停止的位置只取决于脉冲信号的频率和脉冲数，而不受负载变化的影响，即给电机加一个脉冲信号，电机则转过一个步距角。

Results of the experimentation compared with the simulation exhibited superiority of the stator current and pull-in torque, therefore the new hybrid motor should be more valuable in practical applications.

实验测试的数据以及仿真的结果表明，在稳态电流与同步牵入转矩方面的性能与磁滞电机相比永磁磁滞同步电机的性能有明显的改善，它是一种很有实用价值的新型电机。

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。