计算机系统

Based on accurate step motor system parameters, the state equations describing step motor dynamic characteristics are set up. The operation of the self synchronization closed loop control system is simulated on computer. In the research the principle analysis and system design have been done about self synchronization closed loop operation. The relation between rotating EMF and the rotor position of the step motor is discussed. Through detecting the zero value of rotating EMF the rotor position of the step motor is indirectly obtained.

在得到准确的步进电动机系统参数的基础上，建立了描述步进电动机动态特性的状态方程，并对自同步闭环系统的动态特性进行了计算机仿真在论文的研究中，分析了旋转电势与电机位置的对应关系，通过旋转电势的过零检测间接得到转子位置信号，利用这种"间接传感器"方法实现了步进电动机的自同步闭环控制，论文从原理分析和系统设计两方面进行了研究。

The construction project of the system with monitor and control slave station, computer control center and inquiring terminal is designed. The project of the MGIS software system based on internet is constructed.

对系统的总体结构和功能进行了阐述，提出了监测，控制子站、计算机控制中心、查询终端的系统构建方案以及实际的硬件设计方案，并提出了基于internet的MGIS软件系统的设计方案。

Mainly has carried on to the electric control system's improvement, in the beforehand black-white control system product's foundation, has used the industrial control special purpose computer -- programmable controller control system.

主要进行了对电气控制系统的改进，在以前继电器控制系统产品的基础上，采用了工业控制专用计算机——可编程控制器控制系统。

The realization scheme of this project is also discussed in the paper, a data pick-up/control board using PCI bus protocol is designed, this board together with some softwares can finish many functions such as AD conversion of DC system generatrix and every DC spur track, sine wave generation which frequency is between 0-50Hz , and some control functions in fault analysis system.

本文还进行了故障检测装置实现方案的有关研究，设计了基于PC机的直流电网故障诊断系统，完成了基于计算机PCI总线的数据采集控制卡的设计，该卡配合计算机软件可以实现电网正负母线，各支路互感器输出等多路模拟量信号的采集，产生0-50Hz之间任意频率的低频信号源，并且能够完成故障检测中的各种控制功能。

MATLAB language is used to develop the computer simulation program by means of the dynamic mathematical model of three - phase induction motors in phase quantities, The program is applied to series asymmetrical resistance starting operation process of three - phase cage - type induction motors in one phases or two phases of the stator circuit.

为了得到起动特性，根据三相异步电动机在相坐标系下的瞬态数学模型，编写计算机仿真程序，通过实例对三相笼型异步电动机的定子电路一相串联电阻以及两相串联电阻时的起动过程进行仿真计算，对仿真结果进行比较分析；用对称分量法分析定子电路一相串联电阻以及两相串联电阻时的不对称系统，初步计算起动电阻的数值，然后通过计算机仿真的调整来较准确地加以确定。

It can make sure that the primitive data are accurate and up to date. Making use of the OOD development twice to Auto CAD, this thesis draws up to the complete software package of management system of ore blending and realizes the management of the ore blending in the strip mine by the computer.

本论文利用面向对象的编程设计方法对计算机辅助设计Auto CAD软件包为平台进行了二次开发，编制完成了相应的配矿管理系统软件，实现了计算机辅助露天矿配矿管理。

The main point s and basic debugging methods of reconstruction of suchlike control system are described in detail.

通过对原料厂GDS监控系统的技术改造及过程的描述，说明计算机控制系统改造的思路、方法并较详细介绍了这类控制系统改造的要点与调试的基本方法。

For example ,it was used in the management of such big projects as the Three-Gorges Project and ZX-X satellite Research project ,thus achieving the superior disposal of the time limit ,resources and cost of the projects.

在此基础上，本人利用计算机应用专业特长，将项目管理信息先进的方法和计算机技术、网络技术、数据库技术结合起来应用于实际工作中，开发了基于网络计划技术的项目管理信息系统。

UTC Standard Operating Environment - The UTC Standard Operating Environment for desktop and laptop computers, based upon Microsoft Windows 2000, was established to provide a stable, supportable platform for all PC's in the UTC computing environment.

UTC的标准操作系统环境是基于微软视窗系统开发的为UTC的计算机环境提供一个稳定的支持平台，适用于所有的台式及便携式计算机。

A measuring and optimum aligning system of turbo—generators'shafts center was introduced,it can be manually measured and calculated and then transmit the data to the computer,or can bc monitored,optimally aligned and datamanaged directly by conlputor.

摘 要：介绍了一种汽轮发电机组轴系中心测量优化调整系统，既可用于持检测仪进行机组轴系中心的测量计算，并将数据传输至计算机；亦可直接用计算机进行检测，进行机组轴系中心的优化调整及数据管理。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。