控制...

The strategy and controller are coming from combined analysis of combustion mechanism, generation mechanism of pollutants, influential elements, present application status of PID control method in combustion, as well as sum-up of controlling experience and contradistinctive researches of control strategies. It is shown that this method, when applied to furnace temperature controlling and activated-sludge process, is able to ensure controlling objects tracking in the presence of varying operation conditions, as verified via computer simulation. The thesis consists of chapters as following: Chapter 1 generalizes the research objective and brings forward the inferior theme; generation mechanisms of pollutants

本论文由以下章节组成：第1章对研究课题作了综述，提出了研究的子课题；第2章分析探讨污染物生成机理及二次污染物产生的条件，研究了控制污染的工程控制策略；第3章分析研究了仿人智能控制基本理论及其优越性；第4章通过仿真实验验证了仿人智能控制算法在炉膛温度控制中的有效性；第5章分析研究了有效防止二次污染的烟气处理方法；第6章通过仿真实验验证了仿人智能控制算法在废水生化处理中的可靠性和有效性；第7章总结了全文研究工作并对今后的工作作了展望。

Especially, the technology of Automatic Gain Control and signal processing are studied which are key factors working on the performance of the receiver. Based on analyzing the theory of automatic Gain Control, operational amplifiers 0P37 and logarithmic D/Aconverter AD7111A are used to design variable gain amplifiers which can be controlled numerally, A/D convector LTC1405 is Used to test the echo, Complex Programmable Logic device is used for controller, and an arithmetic is designed for automatic Gain Control which is simulated and analyzed in order to test its feasibility.

本文在分析自动增益控制AGC原理的基础上，采用集成运放OP37和数控增益衰减器AD7111A设计可数字控制的可变增益运放模块；采用高速A／D转换器LTC1405作为回波信号检测模块；采用复杂可编程逻辑器件CPLD作为核心控制模块，构成数字自动增益控制电路，并设计粗调和细调步进控制相结合的算法，对回波信号的增益进行精确而快速的调节控制，使回波信号振幅快速稳定在设计指标范围内，利于接收机后续信号处理电路对回波信号作进一步的处理。

Therefore, a control problem of distributed parameter systems is simplified to a control problem of a linear system.

再次，证明了管式反应器具有可控性，应用最优线性二次型调节器方法对该系统进行控制，将分布参数系统这一特殊的、复杂的系统的控制问题简化为一般线性系统的控制问题，同时，提出了一种将分布参数系统这种非线性系统的控制问题转化为一般线性控制理论进行控制的方法。

Reliability analysis on ship donkey boiler automatic control system

在讨论继电器控制和单片机控制优缺点的基础上，着重分析了集美大学轮机工程学院自动化机舱实验室辅锅炉的单片机自动控制的软硬件设计特点，对其辅锅炉的继电器控制系统进行单片机控制改装，提高了控制系统的稳定性和可靠性。

Taking distributed control system used by 220t/h circulation fluid bed boiler and 25MW double extraction condensing turbine as examples,aiming at the problems exiting in distributed control system,from the aspects of improving safety,generality,flexibility,control performance,integrative management ability,being easy to use and maintenance,adopts a serial of new ways and strategies,makes it being into the new control system which other control systems can't compare with.

以220 t/h 循环流化床锅炉及25 MW双抽凝汽式机组所使用的分散控制系统为例，针对分散控制系统在应用中所存在的问题，对该控制系统在提高安全可靠性、通用灵活性、最优控制性能、综合管理能力以及方便使用与维护等方面，采取了一系列新的方法与策略，使之成为其他控制系统无法比拟的新一代控制系统。

In this Fuzzy Control scheme,Fuzzy control rule was established carefully based on traffic control theory and experience. The method was simulated.The result of simulation indicated that the method has a little calculation,can efficiency use experienceof engineer and improve response speed.

在模糊控制方案的设计中，我们以信号交叉口交通控制理论为基础，依据常识和经验精心设计模糊控制规则，并根据交通仿真技术，将该方法的效果同定周期控制、感应控制方法进行了比较，从对比结果可以看出：该方法计算量小，并有效地利用了交通工程师的经验，提高了控制的响应速度和实时性。

This thesis discusses expert system and fuzzy control technology; dissertates emphatically the apply of intelligent fuzzy control method inthe control of aluminium electrolytic cell; illuminates in detailed the idea of design with realization of the systems software and hardware; at the same time, with the technology characteristic of the aluminium electrolytic cell, the thesis discusses the methods of anti-interference in control system.

本文就专家系统、模糊控制等智能控制技术进行了探讨；并着重论述了智能模糊控制方法在铝电解槽工艺控制中的应用；详细说明了控制系统软、硬件的设计思想及其实现；同时，针对铝电解槽的工艺特点，说明了控制系统所采取的抗干扰措施。

Chain-grate bed temperature field is a large inertial, nonlinear and time delays controlled system.Its math model is not easy to figure out.Three Fuzzy-PID controllers are presented in this paper based on the dynamic character of fuzzy control and the static character of PID control.They are simulated via combining fuzzy logic toolbox with Simulink.The simulation result shows that they have better characters both in dynamic and static than general PID controller.At the same time, they have better robustness...

链篦机篦床温度场是大惯量、非线性、纯滞后的系统，其数学模型具有较大的不确定性；为实现其精确控制，结合模糊控制和PID控制各自在动态响应和稳态精度上的优势，提出了三种模糊PID控制器；利用Matlab的模糊工具箱和Simulink对三种控制器和常规PID控制进行了仿真比较；仿真结果表明，三种模糊PID控制器与常规PID控制相比具有良好的控制品质和较好的适应性。

This paper describes a control system of Free Electron Laser-THz,which is a distributed control system based on Experiment Physics and Industrial Control System.

介绍了自由电子激光THz源控制系统的组成和结构，对实验物理和工业控制系统在注入器控制系统、磁压缩控制系统和消色散传输控制系统中的应用进行了研究，详细分析了控制系统硬件结构及软件实现。

Referring to OpenRouter model, we implement coordination service point by applying the hierarchical coordination model to the transceiver of messages, which facilitates open control. We build plugins-based router adapters based on symbol plugins and functional plugins, which separates control plane from the data plane and supports the dynamical extensibility of router functions.

参考OpenRo路由器模型，利用层次化协同模型实现了独立于数据层的控制平台CSP，奠定了开放控制的基础；基于功能插件和抽象插件构造了基于插件的路由器抽象层PRA，分离了控制与转发平面支持路由器转发平面功能的动态扩展；并举例说明了MER中高效的网络应用控制路由选择机制，体现了直接控制原理，有助于设==计更为复杂的控制策略！

I am sure after a few weeks of adaptation and familiarization I will have no difficulty in functioning on a daily basis in an English speaking society or in participating fully in graduate studies.

在大学的三年的学习生活不仅给予我自身的充实，更重要的是磨练和培养了我较强的自觉能力和严谨，踏实的作风以及不怕困难的精神，对未来充满了信心！

As the first volcanoes erupted, one of the gases that bellowed out was steam.

在第一批火山喷发时，喷出的气体之一就是水蒸汽。