起动

The model of the asynchronous motor and the operating status under the thyristors controlled circuit are analyzed.

对电动机的模型以及在晶闸管调压电路中电动机的运行情况进行了分析，利用MATLAB/Simulink 建立了调压电路的仿真模型，运用模糊控制理论实现对电动机的软起动控制。

This paper studied the control system of the mid-voltage soft-starter, which based on the thyristor.

论文研究设计了基于晶闸管的中压固态软起动器的控制系统。

We adopt nine-point control theory to design software which is mostly fit for limiting current start mode.

主要针对恒流起动方式进行了软件设计，采用了九点控制思想。

The results shown that the oil-saving rates of fuel oil and lubricating oil are 5 % and 50% respectively by using GRT energy-saving oil additive, it have reached the level of same kinds of products in 80's from abroad; the cylinder wear of DONGFENG truck and JIEFANG was reduced by 24% and 33% respec-tively; the GRT additive improved obviously the seal property of engine cylinder, not only increasing the cylinder pressure nd the output power of engine to rise the acceleration and cold starting properties, but also improving the combustion situation of the fuel oil to decrease the environmental pollution from the exhaust of truck.

结果表明，应用GRT节能油添加剂可以分别节约燃料油5％以上和机油50％以上，达到了八十年代国外同类产品的先进水平；能使东风牌汽车和解放牌汽车的汽缸磨损分别降低24％和33％以上；使用GRT添加剂可以明显地改善发动机汽缸的密封性，不仅提高了汽缸压力和发动机的输出功率，使其具有良好的加速性和冷起动性，而且改善了燃料油的燃烧状况，从而减少了汽车尾气对环境的污染。

In order to study the open-phase operation characteristics of line-start rare-earth permanent magnet motors,the field-circuit-motion directly coupled model for open-phase operation was established.

为了研究自起动稀土永磁电动机断相后的运行特性，建立了断相运行的场—路—运动直接耦合时步有限元模型。

Therefore,taking losses and torque ripple into account,the open-phase operation should be avoided as far as possible even though the motor is at light loads.

因此，从减小损耗与转矩波动两方面考虑，自起动稀土永磁电机即使轻载工况下也应尽量避免断相运行。

And then dynamic process including starting,losing step,reclosing and open-phase operations were analyzed with tine-stepping finite element method and field experiments.

首先研究了同步电机动态分析的共性问题，即局部电磁力、电磁转矩计算与场-路-运动直接耦合求解问题，进而对稀土永磁电机起动、失步、断相、重合闸等动态过程进行时步有限元分析和实验研究。

The following functions can be realized: Measuerment:the effective values of three phase current and voltage, power frequency, active power, reactive power, power factor etc. Motor control: direct starting, converse starting, star and triangle starting, self-starting. Protection:thermal overload protection, current leakage protection, open-phase protection, three-phase unbalance protection, over voltage protection, loss voltage protection, low load protection and fault warning and fault dates memory. Communication: communication of the computer in control room and the microcomputer monitor in the spots is realized by the interface of RS-485. The motor is not only controlled in the spots but also in control room. The dates, information and some functions are shared by the spots and control room too.

该电动机监控器以80C196KC单片机为核心，通过采样三相电流﹑电压信号来实现以下功能：三相电流﹑电压有效值，电网频率，有功功率，无功功率及功率因数等的测量；对电动机实现直接、正反转、星三角及自起动控制；对电动机实现热过载、漏电、断相、三相不平衡、过压、欠压及轻载保护，对故障进行报警及数据记忆；通过RS-485串行接口与中央控制室计算机实现通信功能，对电动机既可本地，也可远程控制；实现控制现场与控制室之间数据、信息、功能共享。

Its function is:①Changing gear ratio,expanding the torque of the driving wheel and the range of the rotational speed,to adapt the travel condition which frequently changes, like start, acceleration, climbing and so on, simultaneously causes the engine to work under the advantageous operating mode;②Under the premise of the invariable rotation, enables the automobile to travel back;③Using neutral, severances the power transmission, to make the engine start, idle, and is advantageous for the engine to shift gears or to carry on the dynamic output.

它功用是：①改变传动比，扩大驱动轮转矩和转速的变化范围，以适应经常变化的行驶条件，如起步、加速、上坡等，同时使发动机在有利的工况下工作；②在发动机旋转方向不变的前提下，使汽车能倒退行驶；③利用空档，中断动力传递，以使发动机能够起动、怠速，并便于发动机换档或进行动力输出。

Start voltage is determined by the resistors used.

起动电压是由所使用的电阻器确定的。

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。