自动控制

The different kinds of missile have analogical loops as the control system is, constituted on the theory of automatic control.

但是，既然是依据自动控制原理组成的导弹控制系统，所以，组成的回路也是有共性的。

The course of Automatic Control Principlescome down to foundation theory of the control system of the model establishment,the system analysis and the system design.

《自动控制原理》课程涉及到控制系统的模型建立、系统分析、系统设计等的基础理论。

The temperature automatic control is in the most important link this control system.

温度的自动控制是该控制系统中最重要的环节。

And how to control the CFBB effectively has become one of the hot subjects in automatic control field.

对循环流化床锅炉的有效控制是自动控制领域研究的热点之一。

This design for protects from fire the volume curtain gate intelligence control device design, also realizes the monolithic integrated circuit automatic control fire protection volume curtain gate, this design selects cpu is 89c52, the smallest system has the replacement and the address lock saves the function.

本设计为防火卷帘门智能控制装置设计，既实现单片机自动控制防火卷帘门，本设计选用的cpu为89c52，最小系统具有复位和地址锁存功能。

Actuator is automatic control system, the operation is based on the role of control signal controller is operated by the size of the medium change, you will be charged variable required on maintaining.

执行器是自动控制系统中的操作环节，其作用是根据控制器送来的控制信号改变所操作介质的大小，将被控变量维持在所要求的数值上。

The research of vibration control system referred to the domain of signal processing and automatic control.

振动控制的研究包含了信号处理与自动控制两大专业领域。

An automatic control system in which various control units are linked in sequence.

各个控制单元按顺序连接的自动控制系统。

CNC technology is a modern development of automatic control technology is digital signal processing machine and a method of control.

数控技术是近代发展起来的一种自动控制技术，是用数字化信号对机床运动及其加工过程进行控制的一种方法。

The thesis can be divided into five parts as follows: First, the structural characteristics of finned-pipe evaporator are analyzed. After selecting suitable microelement controller, the heat-transfer and mass-transfer processes are analyzed for every microelement under the conditions of dryness, wetness and frostiness. Based on previous equations, some parameters of frostiness are confirmed and the frost-growing model is set up under frost condition. Some hypotheses are postulated and with the help of the equation of mass-conservation, energy-conservation and momentum-conservation, the evaporation model which fits in the dynamic simulation is built, which set a solid foundation for system simulation. Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. Third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet-parameter on evaporator. Fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio-parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping.

本文的主要内容如下：1对翅片管蒸发器结构特点进行分析，选取适当的微元控制体，就干、湿和霜工况下对每个微元分别进行传热传质分析，基于经验关系式确定霜的有关参数，对于霜工况下的霜生长建立模型，经适当假设，运用质量守恒、能量守恒和动量守恒方程建立适合动态仿真的蒸发器数学模型，为系统仿真奠定基础； 2对蒸发在大扰动下的开、停机过程，运用动态集中参数模型进行分析和计算，为更好地描述制冷系统运行的全过程奠定基础，同时也为制冷系统实现自动控制提供一定的理论基础； 3对蒸发器正常运行过程，运用动态分布参数和参数间定量耦合的观点来分析和计算，为更好地了解稳态工况下各点参数的变化情况及各入口参数对蒸发器动态特性的影响即蒸发器性能对各参数变化的敏感性； 4编写翅片管蒸发器动态特性仿真计算程序，可以计算不同边界条件和初始条件下的制冷剂热力参数、空气温湿度和霜厚度分布场，实现对翅片管蒸发器在干、湿和霜工况下的动态仿真。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。