控制理论

The requirement of control system specification constantly and diversely changes which results in the problem that the control software is hard to program and test. In order to deal with the problem, the theory of control system design based a high level extended Petri net is discussed in this paper.

为了解决现代控制系统的规模越来越大，柔性要求越来越高，所导致的控制软件的编制和调试越来越难的问题，本文主要探讨了基于一种高级扩展Petri网的控制系统设计理论。

Theory analysis and simulation result indicates that Fuzzy-PID control strategy is adopted to the electrohydraulic proportional valve-controlled motor system.

理论分析和仿真结果表明：电液比例阀控马达速度控制系统采用Fuzzy-PID控制可以取得较为满意的控制效果。

The ideas of two economists lay at the center of that struggle: John Maynard Keynes, the elegant Englishman who advocated government intervention to control the booms and busts of capitalist economies, and Freidrich Von Hayek, the Austrian emigre who argued that government intervention in the economy would erode human freedom and was doomed to failure.

二十世纪两位杰出的经济学者发表了两套截然不同的经济理论：英国学者John Maynard Keynes提倡政府应该干预控制社会的经济盛衰；奥地利学者Freidrich Von Hayek则反驳John Maynard的理论，认为政府干预社会经济将会破坏人民的自由，并断定这套理论将会失败。

Information fusion estimation theory, as a basic problem in control and signal processing regions also is an important theory basis for information fusion theory, which has been researched widely at present.

信息融合估计理论一直是控制、信号处理等领域的基本问题，也是现在研究非常广泛的信息融合理论的一个重要理论基础。

In order to extenuate the vibration with several frequencies caused by different faults, the feed forward learning control method for multi-frequency vibration is presented.

论述和推导了在转子运行状态下，用该方法实现不平衡扰动自动识别和控制参数的自动整定的理论方法、控制过程和控制算法。

The floating dock system controlled by the closed loop gain shaping with H(subscript ∞) control theory is studied and simulated.

采用H控制中的闭环增益成形控制算法，对浮船坞控制系统进行了理论探讨和仿真研究。

A large number of simulation experiments of regenerating the hybrid vehicle's inertial energy are done on the experimental equipment adopting the single neuron self-adaptive PID algorithm to control the brake speed, torque and power, and a large number of simulation experiments of regenerating the hybrid vehicle's gravitational energy by constant rotational speed are also done.

研究设计了可以模拟车辆串联混合传动系统驱动、制动和坡道行驶工况的二次调节综合实验台，建立了实验系统的数学模型；采用单神经元自适应PID控制算法在二次调节综合实验台上进行了车辆串联混合传动系统转速控制制动、恒扭矩制动和恒功率制动回收车辆惯性能的模拟实验，进行了恒转速控制回收车辆重力能的模拟实验，通过实验验证了理论分析的正确性。

Firstly, the conception of networked control systems, introduction and content of networked control systems theory are introduced. Secondly, the network induced time delays of different topology structure are analyzed and then the corresponding plants are modeled. Based on the above, a compensation scheme for the transmitting time delay from controller to actuator is developed. And also a sliding mode controller that makes the system robust is designed.

首先，介绍了网络控制系统的概念和网络控制系统理论的发展概况、研究内容及现状；其次，对不同拓扑结构的网络控制系统的延时进行分析并引入了相应的系统模型：在此基础上，针对网络传输产生的控制器到执行器的延时问题，对不确定输入延时系统提出了一种补偿策略，设计了滑模控制器，使系统具有强鲁棒性。

Gray stystem theroy is a new way of thinking and methods about the quality management and control by transfer theroy and probability distribution theroy controling means in the pavement smoothness construction control. Acoording to actual state, different constructors could erect homologous pavement structrue smoothness interlamination transfer models using transfer theroy, and carry out pavement smoothness construction control, it comes to obvious effect in actual application.

本文通过施工过程中的平整度传递和概率分布规律，利用灰色理论对路面平整度的质量管理和控制提出了新的方法和思路：根据工程实际情况利用传递规律的原理建立相应的路面结构平整度层间传递模型，并据此对路面平整度的施工进行控制，对施工平整度的控制起到指导作用。

In order to investigate the variation of controllability and observability affected by network scheduling,the model of scheduling for Networked Control System is established,which has communication constraint on its input and output channel.Utilizing communication sequence to express the scheduling of channel,the model can be transformed into discrete-time switch system.Under static scheduling,using the theory of recursive invariant subspace and its character,a necessary and sufficient condition of NC...

为了研究网络调度对能控性与能观性的影响，对输入、输出通道都存在通信约束的网络控制系统的调度进行建模；利用通信序列表示通道的调度情况，最终将模型转化为离散切换系统；在静态调度下，利用循环不变子空间理论及其相关的性质，给出了网络控制系统能控性、能观性成立的充要条件，并给出了原有控制系统与经网络静态调度后的系统之间能控性、能观性的关系；最后用仿真实例说明了所提结论的正确性。

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。