起动

That is to say, during the starting process of induction motor, hold-off angle of current has gradually decreased from initial value to zero. The method can always make the displacement angle less than thyristor's firing angle. So the voltage of the induction motor won't oscillate. Therefore, the oscillation of current, electromagnetic and speed can be eliminated during the soft-starting process of induction motor. This paper verifies the correctness of the method by simulation at first.

根据上述原因，本文提出了采用关断角控制的新型控制策略，这种控制策略是使电动机在起动过程中的电流关断角由某一初始值逐渐减小到零，利用该方法可以使感应电动机起动过程中的续流角始终小于晶闸管的触发角，这样续流角的变化就不会引起电动机端电压的振荡，因而就从根本上消除了感应电动机软起动过程中的振荡现象。

Start to regulate to equip to regulate the control electric voltage of the adjustable electricity anti- through a PLC in the process, the electricity anti- that make lets up to zeroth gradually, electrical engineering from start the appearance steady transfer the normal movement appearance to retreat the adjustable electricity bypass again a movement, the electrical engineering starts the process to complete.

起动过程中通过PLC调节装置调节可调电抗的控制电压，使之电抗逐渐减小至零，电机由起动状态平稳过渡到正常运行状态再将可调电抗旁路后退出运行，电机起动过程完成。

Furthermore the starting control with three-wire method is introduced as well as related working principle, connection method and advantages of this starting way.

介绍了常见变频器起动回路的工作原理，并针对跳闸频繁这一现象分析了其原因，阐述了变频器三线起动控制的工作原理与接线方法，阐明了三线起动控制的优点。

The soft starter has advantages of simple structure, high starting torque and speed close-loop control which improve the control technology of soft starter.

该软起动器具有结构简单，起动转矩大，能实现速度闭环控制的优点，使软起动器控制技术提高了一步，并且有持续研究开发的前景，有望在较广泛的应用领域得到推广应用。

Although forest canopy layer could prevent splash erosion effectively, clay was taken away by overland flow and run off easily, the erosion amount became less after removing the forest canopy and surface soil, while the splash erosion still produced in the surface layer; the splash function weakened after having water current, the starting particles were less than bareland, so removing the surface disturbed soil made the erosion amount and clay less, silty sand more than bareland, but unsteady, the wear and tear energy used by raindrop splash and current function for overcoming sediments separating and starting were comparatively large, sediments were very difficult to be started and transported, it explained that forest root systems could increase anti-erosion capability of forest vegetation, make rainfall-current system splash and export finer particles than bareland.

虽然林冠层能有效防止溅蚀的发生，但坡面流还是能带走粘粒部分，粘粒还是容易流失。去除林冠和表层土后，侵蚀量变得更少，但表层还是会被溅蚀，有水流后，溅蚀作用减弱，颗粒起动的比裸地的少，所以，去除表层扰动土后，侵蚀量更少，粉沙多，粘粒比裸地更少一些，但不稳定，雨滴击溅和水流作用用于克服泥沙分离起动损耗的能量较大，很难被起动输移，这说明森林植被根系的作用增加了林地植被的抗蚀力，使降雨一水流系统仅能溅起输出比裸地坡面更细小的泥沙颗粒。

By using dynamics analysis software RecurDyn to establish a model for the prototype of a belt conveyor, this essay reaches through simulation research the conclusion that during the initial startup phase, it is necessary to maintain a lag between the speed of the tail pulley and that of the head pulley, mainly because it takes a certain amount of time for the elastic wave to travel through the belt to reach the tail of the conveyor.

应用动力学分析软件RecurDyn建立了带式输送机的样机模型，通过仿真研究，得出在起动初始阶段，尾部滚筒速度要滞后于头部滚筒速度一定时间，这主要是由于弹性波在输送带中进行传播到达尾部需要一定的时间；并且在起动阶段，输送带的张力比稳定运行时变化大，起动时间越长，输送带出现的最大张力越小。

Use of static frequency converters for reversible diesel generator start is away to substantially increase efficiency and enhance applicability range of electric engine starting, because the technology in question eliminates a need for electric starter, and is less demanding to characteristics of autonomous power supply.

使用静止式变频器起动可逆式柴油发电机组是一种可大大提高发电机起动效率并扩大其应用范围的方法，因为这种技术消除了对起动电动机的需求，而且对自行供电特性的要求也较低。

The Volvo Immobiliser serves as a starter block since the starter key communicate s with the engine′s starting circuit via security-coded electronic signals and random rolling codes.

沃尔沃加密锁相当于一个起动锁，因为起动钥匙通过安全加密的电信号和随机滚动码与发动机的起动电路进行通信。

The Volvo Immobiliser serves as a starter block since the starter key communicates with the engine′s starting circuit via security-coded electronic signals and random rolling codes.

沃尔沃加密锁相当于一个起动锁，因为起动钥匙通过安全加密的电信号和随机滚动码与发动机的起动电路进行通信。

The Volvo Immobiliser serves as a starter block since the starter key communicates with the engine′s starting circuit via security- code d electronic signals and random rolling code s.

沃尔沃加密锁相当于一个起动锁，因为起动钥匙通过安全加密的电信号和随机滚动码与发动机的起动电路进行通信。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。