开关

The inspection unit includes storing unit, logic switching unit and drive change-over switch, inspects whether the storing unit is normal via detecting the edge change, sets the output of abnormal storing unit in certain logic level and performs different logic operations to different logic level setting values.

检验装置包括储存单元、资料切换开关与边缘探测器。其是以边缘变化是否正确来检验储存单元的运作是否正常，并将出现问题的储存单元的输出设定在一固定的逻辑电位上，再对不同逻辑电位设定值使用不同的逻辑运算。

Change-over switch with automtion hand,starting.convert to automation through stop location.

m m，自动，手动，起动三位置转换开关起动自复位，起动后必须经过停止档位才能转向自动档位。

This is a changeover switch.

这是个双向开关。

Location of tap changer is not accessible and it is difficult to operate.

地点的分接开关，是不容易，这是难以运作。

In this paper, on the basis on analyzing of asynchronous motor, DTC principle and torque ripple characteristic, the vector subdivision method is studied particularly, and at the same time, an improved optimized switch stable method is proposed.

在分析了异步电机数学模型、直接转矩控制原理以及转矩脉动特性的基础上，对基于空间电压矢量的矢量细分法进行了详细的研究，并在此基础上提出了一种改进优化开关表法。

This paper NCP1207 (switching power supply chips PWM control)+ S3F9454 (charger chip integrated management control of) the principle of the Ni-cd, Ni-MH battery charger for the working principle of the system design and analysis, intelligent fast Ni-cd, Ni-MH battery charger of the design process, and in the mature Ni-cd, Ni-MH battery charger on the basis succeeded in achieving effective in preventing Ni-cd, Ni-MH battery charge in the case of fast The charge-off phenomenon.

本文结合NCP1207(开关电源PWM控制芯片)+ S3F9454(充电器集成控制管理芯片)的原理对Ni-cd、Ni-MH电池充电器的工作原理进行了系统的开发设计及分析，实现快速智能Ni-cd、Ni-MH电池充电器的设计过程，并在成熟Ni-cd、Ni-MH电池充电器基础上，成功地实现了有效地防止Ni-cd、Ni-MH电池在快充情况下的过充现象。

Another MCU, 89C2051 is used to realize the control of the three rows LED monitor showing coordinates of axis X and Z axis and other state of the system. Charnel A and C of 8155 are used for editor keyboard, which make the inputting or editing of the NC code and data possible. Charnel P1 of 8031 is used for the operation keyboard such as system power on/off and movement of axis X or Z. a programmable parallel I/O chip, 8255, is used to achieve system I/O and the transmission of other information. In summarize, the system developed is characterized by its simplicity, low development cost and high reliability.

在CPU存储器扩展电路设计中， CPU选用MCS-51系列的8031单片机，外扩32K的程序存储器和 8K的数据存储器，分别用于存放系统管理程序、数控加工程序以及运算数据；在显示电路设计中，选用MCS-51系列的89C2051单片机作为从CPU，控制三排LED显示器，用于X轴、Z轴动态坐标以及相关数字的动态显示；在手动键盘和编辑键盘设计中选用8155芯片的PA口和PC口作为行、列母线，扩展矩阵式编辑键盘，用于程序和数据的输入或编辑，同时选用8031单片机的P1口扩展手动键盘，用于系统启动、停止以及运动部件在X、Z轴方向的手动控制；在I/O口扩展电路设计中选用8255芯片扩展输入输出口，用于接收和传送开关量及相关信息。

It is best to do a switch on the chassis, so that will not affect normal use.

最好是做一个开关放在机壳上，这样就不会影响平时的使用了。

The most important drawback in engineering application is the chattering caused by high frequency switching control.

该理论在工程应用中最大的障碍是高频开关控制带来的抖动现象。

Firstly, the dynamic behaviour of the system may be tailored by the particular choice of switching function.

第一，系统的动态性能适应于开关方程的特殊选择。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。