查询词典 control

Backsteppnig control is applied to the positioning of ironless linear motor stage in this thesis. The controller design starts from a lower dimension subsystem and design a Lyapunov candidate for it. By choosing some appropriate virtual control input, the stability of the subsystem is guaranteed. Then extend to a larger system and choose a stabilizing control input for the extended Lyapunov candidate. The procedure is repeated until the overall system's actual control input appears, Again, the overall system's stability is guaranteed when the control input is appropriately chosen.

本论主要探讨逆向步进控制器在线性马达轨迹之控制，控制器之设计方式是由后往前一步一步推导，每一步推导的子系统，均满足Lyapunov稳定法则，在由后往前一步一步推导过程中，每往前推导一步，均必须符合最先所假设的条件与设计，直到方程式与系统的控制输入出现关连性，利用所设计之控制输入将系统的非线性问题予以解决，并因满足Lyapunov稳定法则而收敛。

On control method, develop under the control of from hand movement to autocontrol; On the control function, arrive at intellectualized under the control of from developing simplely under the control of; Develop on the busy, from scheme weight to informatization treatment; On controlling principle, touch the relay logic navar working a telephone switchboard stiffly from unitary ......

因而，受到各工业国家的重视，并投入大量的人力、物力加以研究和应用。在我国，近几年来也有较快的发展，并取得一定的成果，受到各工业部门的重视。通过此设计，可以使大家了解到X62W万能铣床的电气控制系统的结构和PLC控制的原理，简单工作原理。目录一。绪论

On control method, develop under the control of from hand movement to autocontrol; On the control function, arrive at intellectualized under the control of from developing simplely under the control of; Develop on the busy, from scheme weight to informatization treatment; On controlling principle, touch the relay logic navar working a telephone switchboard stiffly from unitary having developing to centering on microprocessor or microcomputer network-rization autocontrol system.

控制方法，开发的控制之下，从手运动的自动控制；在控制功能，达到智能化的控制之下，来自发展中国家单纯的控制之下；开发的繁忙，体重从计划向信息化的待遇；控制原则，触摸继电器逻辑navar工作电话总机招待了从单一发展以围绕微处理器或微机网络化自动控制系统。

The invention relates to a dynamic matrix control system of high-purity distillation, which comprises distillation tower, intelligent checker, DCS system, superior host, and on-site bus, while they are connected. The control system uses tower product group as the object variable, and the reflux ratio and reboil ratio as control variable; the superior receives history temperature and pressure data from the DCS real-time database, via the predict control and dynamic matrix controller, to obtain the output values of present controller as reflux ratio and reboil ratio, then feedback said two values to DCS system, to function the distillation object. The invention can confirm the high-purity stable operation, with better dynamical control.

本发明公开了一种高纯精馏的动态矩阵控制系统和方法；系统包括：精馏塔、智能检测仪表、DCS系统、上位机和现场总线；所述精馏塔、智能检测仪表、DCS系统和上位机通过现场总线依次相连，实现信息流的上传和下达；本发明所涉及的控制系统采用塔双端产品组分为被控变量，回流比和再沸比为对应的控制变量；上位机从DCS实时数据库中获得历史的温度、压力等数据，通过推断控制环节和动态矩阵控制器环节，得到当前控制器的输出值-回流比和再沸比，再把控制器输出值返回给DCS系统，实现了对高纯精馏过程的双端产品高纯控制，对双端组分的高纯度平稳操作，具有很好的动态品质和控制效果。

Based on the characteristics of the chip we designed to control the hydraulic servo system for the core of this system, control circuit valve using digital potentiometer, through programming, automatic regulation resistance, high AD698 and accurately by an LVDT valve mechanical displacements converted single polarity dc voltage, through the simulation, the design of PID algorithm of closing valves, the degree of control system and superordination machine, realize the valve control circuit of adjustment and control.

基于上述特点我们设计了以单片机为控制核心的液压伺服阀控制电路，本系统采用数字电位器，通过编程自动调节电阻值，采用AD698 与LVDT 配合，高精确地将阀门的机械位移转换成单极性直流电压，通过模拟PID调节算法，设计实现了对阀门开合程度的控制，该系统与上位机进行通信，实现对阀门控制电路的调试及监控。

In the software aspect of 3DP control system, include solid model stratified slicing module, 2D slice data processing module, ink-jet control module, motion control module, etc. Slice module is based on the color STL model output from Magics RP software, its output synusia data is TIFF、JPG、BMP format of CMYK color images. 2D slice data processing module use RIP and dithering algorithm to process 2D color images, thereby achieve the color image information correspond with each micro-nozzle. Ink-jet control module's function is to control each nozzle's on/of.

其中实体模型分层切片模块是基于Magics RP软件输出的彩色STL模型进行的，其输出层片数据为TIFF、JPG、BMP的CMYK格式的彩色图像；二维切片数据处理模块通过RIP算法和抖动算法对一系列二维彩色图像进行数据解析，从而实现图像的色彩信息与每个微细喷嘴的一一对应；喷墨控制模块的功能是控制每个微细喷嘴的喷射与关闭；运动控制模块则负责所有加工成型运动的协调运行。

Stability, robustness and oscillation of differenct uncertain time-delay systems are analyzed. Synthetical time-delay control schemes are proposed, including robust stabilizing control, variable structure control, robust dissipative control and so on. Industrial time-delay system model are established based on the theorematic results and industrial requirements. Pratical control algorithms and APC-software are developed and applied to practical process successfully.

在国家自然科学基金资助下，本项目对各类不确定时滞系统的稳定性分析、振动性质分析、鲁棒镇定控制器设计等问题进行了全面的理论分析，并结合流程工业生产过程的特点和企业需求，建立工业过程时滞系统模型，开发实用型的控制算法和先进控制软件，在一些典型的工业生产过程进行了成功的应用，取得了显著的经济效益和社会效益。

Seasonal variation of the distributions of microorganism in the root-zones of wetland plants (Phragmites australis, Zizania latifolia, Zizania latifolia etc.), the substrate layers of control SSPs, together with the effects of wastewater treatment were studied. The results are as follows: the numbers of microorganisms in the different plant root-zones were different; the purification effects were also different. The number of microorganisms in the substrate of the control plot becomes smaller with increasing depth. The numbers of bacteria in fall were higher than those in the summer for the three plant zones and the control, and the number of fungi and actinomyces in summer was much higher than that in the fall for control. As for fungi and actinomyces in the experimental systems, most of their difference between the summer and fall were not as big as that in the control.

通过对不同季节芦苇、茭白和香蒲等湿地系统植物根区、无植物对照基质微生物分布状况以及净化效果的研究，结果显示：（1）种植不同植物的湿地系统根区微生物数量不同，其湿地净化效果也不同；（2）对照系统微生物的数量随基质深度的增加而递减；（3）季节变化显示湿地系统秋季的细菌总数量比夏季高；但对照系统夏季的真菌和放线菌数量明显高于秋季；（4）湿地系统TP的去除率夏季高于秋季。

The numerical control technology is carries on the control with the numerical information to the mechanical movement and the work process the technology, the numerical control equipment is take the numerical control technology as representative's new technology the integration of machinery product which forms to the traditional manufacture industry and the emerging manufacturing industry seepage, namely so-called digitized equipment, its technical scope cover very many domains:(1) machine manufacture technology;(2) information processing, processing, transmission technology;(3) automatic control technology;(4) servo actuates the technology;(5) sensor technology;(6) software technology and so on.

数控技术是用数字信息对机械运动和工作过程进行控制的技术，数控装备是以数控技术为代表的新技术对传统制造产业和新兴制造业的渗透形成的机电一体化产品，即所谓的数字化装备，其技术范围覆盖很多领域：(1)机械制造技术；(2)信息处理、加工、传输技术；(3)自动控制技术；(4)伺服驱动技术；(5)传感器技术；(6)软件技术等。

A control scheme of decompounding sintering process control into two branch control models, chemical composition and control of burn-through point was put forward aiming at the problem of control complexity of iron ore sintering process.

摘要针对铁矿石烧结过程控制复杂性问题，提出了一种将其分解为烧结矿化学成分控制和烧结终点控制的方案。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。