控制

This thesis formulates a stable Control System based on Center air conditioning's structure and theorem.

本文就近年来出现的最为新型的远大户式燃气中央空调的控制系统进行了深入的研究，并且在实际中应用了模糊控制技术、集中控制技术、计算机网络控制技术、变频调速技术，实现了远程控制和与因特网的互联。

A time-shared control circuit points to multiplexer, applies the control signal and switches and repeats to output the input signal by the predetermined cycle order. A comparator compares the voltages of the output signal from the multiplexer and the reference voltage and outputs a dimorphic signal representing the comparative result. A time-share controlled circuit applies the control signals, controls the action of the multiplexer and the latch circuit to lead the respective voltage comparative result to be maintained in the latch circuits.

分时控制电路(5)对多路调制器(4)，使用控制信号(Sc1)，以所定周期顺序切换反复输出所输入的信号(St1)-(St4)，比较器(3)对从多路调制器(4)输出的信号的电压和基准电压进行电压比较，输出表示该比较结果的二态信号，分时控制电路(5)使用控制信号(Sc1)及(Sc2)，控制多路调制器(4)及闩锁电路(LT1)-(LT4)的动作，使得信号(St1)-(St4)的各电压比较结果分别保持在闩锁电路(LT1)-(LT4)中。

Prepress production has been mostly digitalized because of the invention and developing of typesetter technology, computer to plate technic has digitalized platemaking process too, the appearance of digital press makes digitalization possible in printing process. For their characteristics, the traditional control strip can't be used in digital platemaking and printing, therefore, we should design PostScript printing control strip as a way to control quality during production.

激光照排技术的发明和发展使印前工艺过程已经基本实现了数字化，CTP技术又将制版工艺带入数字时代，数字印刷机的出现为印刷工艺进入数字化提供了可能，由于它们的作业特点，用于传统印刷的控制条无法作为其制版、印刷质量检验与控制的手段，这就需要我们设计出既能控制印刷过程又能控制制版质量的PostScript印刷控制条。

A state variable feedback based system control approach, which indirectly controls load voltage by means of controlling the supply current, is proposed, thus the problem that the undamped DC transient component of supply current, which is caused by the linking inductance between power supply and power loads under PI control mode, is solved.

分析了仅由1套逆变器构成的并联型综合电能质量调节器的结构特点和控制目标，提出了一种基于状态变量反馈的系统控制方法，通过控制电源电流来间接控制负载电压，很好地解决了常规比例–积分控制时电源和负载间的连接电感所导致的供电电流直流暂态分量不衰减的问题。

Because of the strong non-linearity of the systems themselves and the addition of the resonant components, the modeling of these system becomes difficult, its effect sometimes is unideal even invalid that applying conventional controlling methods. The strategy of fuzzy control needn't constituting mathematics model and control the system based on control experience completely, fuzzy control is fit for controlling the systems of non-linear and uncertain.

但是由于这些系统本身严重的非线性、时变不确定性以及谐振元件的加入，使得系统数学模型很难建立，应用传统的控制方法有时效果不理想甚至是无效的，而模糊控制策略无需建立精确数学模型，是在控制经验基础上实现对系统进行控制，适合对非线性及不确定性系统进行有效控制。

Applied with space vector diagram, a novel method for analyzing the control law and current controllability of variable structure control is proposed The detail discussions of parameter design, robustness and stability analysis are also made Furthermore, based on modeling the DC capacitor voltage control subsystem, a kind of fuzzy voltage controller is proposed, which results in good control performance In order to reduce the chattering of variable structure, a novel control scheme----fuzzy variable structure control is proposed in the fifth chapter.

针对变结构控制在应用中出现的抖振问题，本文第5章应用趋近率控制与模糊控制的有机结合，提出了模糊变结构控制策略，并应用空间矢量分析法揭示了其控制机理。

Welding control system comprises hardware and software, using C language welding program, and it reduces difficulty of control system exploitation. Scheduling control, sampling disposal of feedback signals and digital PI modulation are achieved through program control, and this controls veraciously welding process.

焊接控制系统由硬件和软件两部分组成，焊接程序采用C语言编写，降低了控制系统软件开发的难度，通过程序控制实现时序控制、反馈信号的采样处理及数字PI调节，对焊接过程进行准确的控制。

The analysis of the performance of HRSG water level control system shows that, under the disturbance of load and inlet working substance of HRSG, the unit response can be controlled effectively, and the unit stability and control quality can be improved, so the unit control performance is improved obviously.

对余热锅炉水位控制系统的特性分析表明，水位控制系统能够在负载和余热锅炉入口工质参数扰动下有效地控制机组响应特性，保证机组的稳定和控制品质，控制性能得到明显改善。

Moreover, a vibration isolation scheme based on H control is shown, and a vibration control problem due to a single frequency disturbance is solved analogically by using disturbance observer.

给出了LQG/H〓控制方法在实际应用中的诸多发展和改进形式，它们分别是用于处理存在噪声和模型扰动问题的基于ERA的LQG控制方法，预测控制方法，能够简化控制器设计及其降阶处理的平衡的LQG控制方法，以及非线性问题的神经网络控制方法。

At first, the characteristic and the difficulty of shift process are discussed and the basic concept and structure of apish intelligent control are stated. Secondly, the model of shifting is given and the fluctuation of engine speed is advanced to evaluate engine control during shifting.

本章分析了AMT换档过程控制的特点和难点，提出采用仿人智能控制算法对AMT换档过程进行综合控制，并介绍了仿人智能控制的基本概念和结构，建立了换档过程数学模型，提出发动机转数波动量作为换档过程中发动机控制的评价指标。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。