查询词典 automatic control system

The book is divided into 14 chapters, including Introduction, continuous control system theory, process and discrete sampling, Z transform, sampled-data systems, discrete approximation of continuous system the equivalent, based on mathematical transform the classical design method, based on state space pole placement design methodology, multi-variable system of quadratic optimal control, quantitative effects, the choice of sampling period, the digital control system modeling, digital control system for a variety of design methods, variables quadratic optimal control systems, sampling cycle of selection, non-linear control of the problem, as well as digital control system, a typical application - Disk drive servo control design.

全书共分14章，内容包括概论、连续控制系统理论、采样过程和离散化、Z变换、采样数据系统、连续系统的近似离散等效、基于数学变换的经典设计方法、基于状态空间的极点配置设计方法、多变量系统的二次型最优控制、量化效应、采样周期的选择、数字控制系统的建模问题、数字控制系统的各种设计方法、变量系统的二次型最优控制、采样周期的选择、非线性控制的有关问题，以及数字控制系统的一个典型应用——磁盘驱动器的伺服控制设计等。

The book is divided into 10 chapters, including discrete and continuous system of PID control system, commonly used digital PID control, Expert PID and fuzzy PID control, neural PID control, genetic algorithm PID control, Multivariable decoupling PID control, several advanced PID control, gray PID control, PID control servo system, PID control in real time, ea

全书共分十章，包括连续系统和离散系统的 PID 控制，常用数字 PID 控制，专家 PID和模糊 PID 控制，神经 PID 控制，遗传算法 PID 控制，多变量解耦 PID 控制，几种先进的PID 控制，灰色 PID 控制，伺服系统 PID 控制，PID 实时控制，每种方法都通过 MATLAB 仿真程序进行了说明。

In the design of automatic control system for isomerization unit from heptane tower of PX devices, single-loop control is used in the control programme. There is a total of 11 circuit , of which is 8 single-loop control system and 3 cascade control system. It has done the choice and relevant calculation on the controller, control valves and measurement devices used in the control system. There is a total of eight chapters in this design.

在对PX装置异构化单元脱庚烷塔自动控制系统进行设计时，控制方案基本采用单回路控制，总共有11个设计回路，其中单回路控制系统8个，串级控制系统3个，并对控制系统所要用到的控制器，控制阀和测量元件等进行了选择且进行了相关的计算。

It consists of four: parts: the program of automatic Z-scan control and data processing, multi-function data acquisition and control board, motorized translation stage, and joulemeter/-powermeter. Based on the Windows98 system, the program of automatic Z-scan control and data processing is programmed in LabWindows/CVI environment. The experiment error can be eliminated by Automatic Z-scan system through dual channel scan. The multi-function data acquisition and control board, motorized translation stage are made in our lab. The joulemeter/powermeter is EPM2000 of Molectron Detector Inc..

其中，Z扫描控制及数据采集软件是在Windows98操作系统下，利用LabWindows/CVI开发出来的，利用该软件进行双通道扫描可以很方便的消除由于功率波动引起的实验误差；多功能数据采集卡是我们自行开发的，它可以同时控制电动导轨和进行数据采集；电动导轨是由光学精密导轨和步进电机等组装成的；功率能量系统采用的是Molectron Detector Inc。

Intermediate heat cycle can be reduced because the tail blade turbine steam humidity and reduce steam consumption. improve plant efficiency and thermal cycling in the unit were popular, however, Reheat temperature control system with nonlinear their targets, inertia, the characteristics of delay, Power Plant to become more difficult to control the system-paper fuzzy control theory and fuzzy logic, reconsidered conventional PID control law on the basis of the study and intelligent fuzzy PID control, the 300MW units Reheat fuzzy control process using adaptive PID control, the introduction of load feedforward. design configuration, the final design complex adaptive feedforward cascade control system and MATLAB for simulation, simulation results show that the response speed, Robust control and accuracy, the system has considerable advantages Unit to improve the efficiency and reduce the operational workload.

中间再热循环技术因其可以降低汽轮机尾部叶片的蒸汽湿度和降低汽耗，提高电厂的热循环效率而在单元机组中被普遍采用，然而，再热气温控制系统因其对象具有非线性，大惯性，大迟延等特点，成为火电厂较难控制的系统之－，本文运用模糊控制理论和模糊逻辑推理，在重新认识常规PID控制规律的基础上探讨了PID与智能模糊控制相结合，在电厂300MW发电机组再热模糊控制过程中使用自适应PID控制，引入负荷前馈，设计组态，最终设计出自适应复合型前馈串级控制系统，并在MATLAB中进行仿真模拟，仿真结果表明，在响应速度，鲁棒性和控制精度等方面，此系统都具有相当大的优越性，有利于提高机组的效率和减轻运行人员的劳动负荷。

May carry on each kind of specification according to the customer request the straight seam steel pipe processing manufacture, in the workshop is equipped with two tube making production lines, the main processing equipment has 3200-ton tube making hydraulic presses, 1600 ton tube making hydraulic presses, the completely automatic pre-bender, 2000 ton hydraulic pressure finishing machines, the automatic stitching machine, the large-scale numerical control automatic cutter, the plate ultrasonic testing machine, the automatic submerged arc welding machine, the gas protection automatic welding machine, the hydraulic pressure test and so on the tube making industry most advanced technical equips.

可根据客户要求进行各种规格的直缝钢管加工制作，车间内设有两条制管生产线，主要加工设备有3200吨制管液压机、1600吨制管液压机、全自动预弯机、2000吨液压精整机、自动合缝机、大型数控自动切割机、板材超声波探伤机、自动埋弧焊机、气体保护自动焊机、水压试验等制管业最先进的技术装备。

Has been successful for customers in the printing and dyeing machines, automatic spraying, electronic equipment, printing and packaging, wire and cable, constant pressure water supply, automatic door, laser welding, automatic punching bed, automatic production line areas such as development, design, transformation of a wide range of automation equipment and advanced automatic control systems, and provide good technical support and pre-sale, sale, the after-sales service!

已经成功为客户在印染机械、自动喷涂、电子设备、印刷包装、电线电缆、恒压供水、自动门、激光焊接、自动冲切床、自动化生产线等方面开发、设计、改造了众多自动化设备及先进的自动化控制系统，并为其提供周到的技术支持和售前、售中、售后服务！

The STAI system has several functions, such as automatic detection and conversion of the file formats of web pages , automatic word segmentation and automatic keyword indexing , automatic classification indexing and automatic subject indexing.

STAI系统是一个自动化程度较高的易用型软件，该试验系统可以同时实现中英文网页的自动标引，兼顾了如何结合自然语言与情报检索语言二者在信息检索方面各自的优越性。

According to the wire electrode on the trajectory of the different forms of control, WEDM can be divided into three types:* is a copy-control, cutting their lines in advance to create the shape of the workpiece and the same mode *, When the rough machining parts and die at the same time * Clamping in the machine tool table, in the process of cutting wire electrode tightly * close to the edge of model for mobile track, thus cutting out the model * with the same shape and precision to work; another One is the optical tracking control, the cutting in line before the first parts in accordance with drawings by a certain ratio of enlarge depicts an electro-optical tracking maps, drawings will be processed when the machine electro-optical tracking placed on the stage, followed on the stage The first photo has to follow the ink line graphics track movement, and then through the use of electrical, mechanical linkage to control the machine tool table work together with the relative electrode wire Xiang Sixing do sports in order to cut out the pattern and shape of the workpiece to the same; a re - Is a digital process control, advanced digital automatic control technology, machine-driven process in accordance with the geometry of the workpiece before the parameters of good pre-processing CNC automatic completion of the processing, production do not look like without drawing board also plans to enlarge, in front of more than two Control in the form of higher precision processing and broad scope of application, at home and abroad for more than 95% of WEDM have been using digital technology.

根据对电极丝运动轨迹的控制形式不同，电火花线切割机床又可分为三种：一种是*模仿形控制，其在进行线切割加工前，预先制造出与工件形状相同的*模，加工时把工件毛坯和*模同时装夹在机床工作台上，在切割过程中电极丝紧紧地贴着*模边缘作轨迹移动，从而切割出与*模形状和精度相同的工件来；另一种是光电跟踪控制，其在进行线切割加工前，先根据零件图样按一定放大比例描绘出一张光电跟踪图，加工时将图样置于机床的光电跟踪台上，跟踪台上的光电头始终追随墨线图形的轨迹运动，再借助于电气、机械的联动，控制机床工作台连同工件相对电极丝做相似形的运动，从而切割出与图样形状相同的工件来；再一种是数字程序控制，采用先进的数字化自动控制技术，驱动机床按照加工前根据工件几何形状参数预先编制好的数控加工程序自动完成加工，不需要制作模样板也无需绘制放大图，比前面两种控制形式具有更高的加工精度和广阔的应用范围，目前国内外95％以上的电火花线切割机床都已采用数控化。

The development direction changed direction according to the four-wheeler, the domestic and international company changes direction organization to control to the four-wheeler currently main adoption of is a numeral control, this is owing to a lot of advantages of numerical control:the procedure turn a control, the controller carries on the processing of operation and numerical information according to the control regulation designed, mainly passing procedure to carry out, if change control regulation need to change software, but need not change the hardware structure of system: control the accuracy is high, in the emulation the control the system, the accuracy of the controller from the accuracy of the component but settle, numerical controller accuracy from word long decision;Stability good;The software replies to use, needing a hardware environment of using the homology realization in the emulation the system, the numerical controller is a procedure control, the sub- procedure mold piece which need to be designed and write to carry out its model, can immediately carry out several links of functions expediently.

目前各个厂家大多采用的是PLC、单片机应用于四轮转向控制器中，功能基本能够实现，相比较之下，信号处理能力较强的数字信号处理器各方面均性能优于以上三种处理器。DSP是新世纪数字化革命的核心。它是一种独特的微处理器，具有可编程性，且实时运行速度远远超过通用微处理器。强大的数据处理能力和高速的运行速度，是DSP最值得称道的两大特色。DSP芯片是一种特别适合进行数字信号处理的微处理器。它强调运算处理的实时性，因此除了具备普通微处理器所强调的高速运算和控制功能外，主要针对实时数字信号处理，在处理器结构、指令系统和数据流程上做了很大的改动。它具有灵活、精确、可靠性好、体积小、功耗低和易于大规模集成等优点。

The French are not suggesting a new EU treaty, but they have plenty of other wheezes.

法国人并不是在建议签署一个新的欧盟条约，但他们有许多其他的阴谋。

This letter was written by my brother.

这封信是我弟弟写的。