自动控制系统

It is the domestic test system of the generator test station of intermediate frequency of the certain Military industry enterprise.

由于直流电动机具有极好的运行性能和控制特性，所以直流调速系统是自动调速系统的主要形式。

Domestic and overseas new technologies about conference system based on digital network in recent years are introduced, namely digital processing and transmission, high-frequency and infrared transmission, NOMA, mute corresponding interaction, camera shot auto tracking, video conference system, interactive digital board, multi-assembly-room system control, and audio-video and lighting network centralized control platform technology.

着重介绍近年国内外基于数字网络的会议系统新技术如数字处理和传输、高频和红外传输、NOMA、哑声对应互动、摄像自动跟踪、会议电视、交互数字白板以及多会议室系统控制和声像灯光网络化集控平台等技术，并举出典型的应用实例。

This paper introduces a new automatic measurement and control instrument for glass tube outer diameter and wall thickness.

介绍一种由STD工业控制计算机、光学系统和CCD传感器组成的新的玻管外径壁厚自动测控仪器，讨论了系统的工作原理和设计特点

Techniques included in the system are PC based open architecture CNC system, real time simulation of machining process, parametric CNC programming, computer vision based cams automatic positioning and in line inspecting, and grinding force adapt control.

该系统的研发过程中涉及的主要单元技术是：基于PC的开放式数控系统，加工过程的实时仿真，参数化数控编程，基于计算机视觉的凸轮自动定位和在线检测，磨削力适应控制等。

Instead of using a polarimeter recommended in G.650,we use a polarizer controlled by a step up motor to measure Jones optic Vector in this system,which is much cheaper.

该测量系统利用光功率计和步进电机控制的偏振片测量输出光的琼斯矢量，代替了G 。6 5 0琼斯矩阵特征值法中所建议使用的偏振计，降低了PMD测量系统的成本，并实现了自动测量

The classical cutting stock algorithm——column generation technology , and wrap up rectangle technology for abnormity are analyzed ; The development of AutoCAD with ObjectARX is studied and the generating method of cutting outline drawing and layout drawing were found out on the basis of analyses of the graph database structure of AutoCAD and the basic operation of it ; The process planning technology of plate material cutting orienting numerical control is studied a process planning method directly based on layout drawing is established ; The emulation technology in AutoCAD is studied and a kind of dynamic emulation method is put forward , which is realized by incrementally modifying graph entity ; The postposition of NC program of the integrated cutting system constructed on software plug-in is proposed , which can effectively solve the problem that it is difficult for a numerical control programming system to be common , which is caused by the difference of instruction format and control parameter between different type of numerical control machine .

分析了经典的矩形件优化排样算法——列生成法和针对异形件的矩形包络算法；研究了基于ObjectARX 的AutoCAD 开发技术，结合对AutoCAD 图形数据库结构及其基本操作的分析，给出了下料轮廓图和排样图的生成方法；研究了板材数控下料加工的工艺处理技术，建立了一种直接基于排样图进行的图形交互工艺规划方法；研究了在AutoCAD环境中的板材下料数控仿真技术，给出一种通过增量修改图形实体对象实现的动态仿真方法；提出以软插件技术构建集成下料系统的数控编程后置处理部分，能够有效解决因数控下料机床指令格式及控制参数不统一导致的自动编程软件系统不易实现通用性的问题。

In this thesis, the computer protection and monitoring network system is discussed according to the requirement of Shaoguan smeltery for distribution. Advanced technologies are employed in the system to monitor and control as well as protect the main equipments in the factory automatically such as computer, modern electronics, communication and signal processing. The automatization and management of the substation are improved, and the production efficiency and economic benefit are advanced after these technologies have been used.

本论文以韶关冶炼厂供配电微机保护和监控系统的开发为研究对象，利用先进的计算机技术、现代电子技术、通信技术和信号处理技术，实现对全厂的主要设备和线路的自动监视、测量、控制和保护，以全面提高韶关冶炼厂供配电系统自动化运行和管理水平，提高韶冶的生产效率和经济效益。

The main content of this dissertation includes: 1. Research on the theory of ultrasonic power supply, introduce its development process. On the basis of these, fix on the scheme of medical ultrasonic low-power supply. 2. According to the principle of modularized design, divide medical ultrasonic low-power supply into four parts. They are power amplify circuit, power control circuit, frequency automatic tracking circuit and matching circuit. Separately research on their theories and design their circuits and necessary programs, especially, effectively resolve the problem tracking the supersonic vibration system with a narrow syntony frequency bandwidth and a high swing. 3. The matching experiments gain good result, and prove that medical ultrasonic low-power supply is entirely up to the mustard on intellectualization, wide band of working frequency, steady output and high efficiency.

本文工作的主要内容包括： 1、研究了超声功率电源的原理，并回顾了它的发展过程，在此基础之上确定本文医用小功率超声电源的设计方案； 2、按照模块化的设计原则，将医用小功率超声电源的设计分解为功率放大电路、功率控制电路、频率自动跟踪电路和匹配电路等四个部分，分别研究了各部分的原理，在此基础之上进行了具体的电路设计和程序设计，尤其是有效地解决了对谐振频率带宽窄振幅高的超声振动系统的频率跟踪问题； 3、通过与超声振动系统的各项配合实验，取得了很好的实验结果，验证了医用小功率超声电源完全满足智能化、工作频带宽、输出功率稳定、输出效率高的设计要求。

Cronbach a of them equals respectively 1.000, 0.714. Conclusions The system could form the test pater with the strategy of the combination of the certain proportion of the important degree and the binominal distribution models which realized the Internet testing, rectifying and analysis.The test papers abstracted from the system were reliable and valid. It can scientificly, objectively evaluate the students' ability and it's beneficial to deviation of the teaching, testing and controlling testing cheat. The Non-paper testing system has good practical value.

建立的试题库和考试系统能够按重点等级定额比例分配与难度等级二项分布模型策略组卷，实现了远程考试、自动阅卷和相关分析功能；从该系统抽取的试题难度和区分度合适，试卷可信、有效；能够客观、公正、科学地测试和评价学生的能力，对开展教考分离、控制考试作弊起到积极作用，具有较好的实用价值。

It's pointed out that in the design of a weapon system, a collimating prism box should be installed behind the electro-optical instrument, if the condition is permitted, to control the electro-reticule generator or other functional elements added in the circuit, and make the weapon system realize the automatic collimation during flighting or driving.

指出在武器系统的设计中，如果条件允许，可在光电仪器的后方设置一个校准棱镜箱(或折反式自准凹面镜组件)，以便在控制电路中加入电十字线跟踪产生器等功能单元，使武器系统实现行进间或飞行中自动校准。

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。