传输控制

Time-delay problem was hard to be avoided in many occasions of industrial process control and network transportation. It was a severe disadvantage for control performance especially in input aslant systems.

时延问题在工业过程控制以及网络传输中难以避免，严重影响控制效果，尤其对于输入信号变化较大的控制过程，危害更加严重。

Through the discourse on elements of printing quality controlment, and the printing controlling digital and methods, the thesis is going to give an elaboration and analysis on the printing quality controlment, in five aspects as the data transmission in digital flowsheet, color management in open sysem, data transmission and management, digital preliminary and on-line printing quality testing.

通过论述印刷质量控制影响因素和质量控制的数字化及其方法后，从数字化流程中数据流的传递、开放式体系下的色彩管理、数据传输与管理、数码打样、在线印刷质量检测五个方面进行印刷质量控制的阐述和分析。

The stability problems are analyzed and discussed. The optimal control problem is formulated to determine the necessary conditions for optimality in networks. Three theorems about the properties of the steady state-costate solution in Hamilton function are confirmed leading to the natrual meaning and the optimal policy which can be implemented in practice. In chapter Ⅴ, the methods for nonstationary simulation of computer networks are discussed.

第四章表述了计算机通信网动态特性研究的主要数字方法；提出了排队与随机存取机制、网络链路传输和节点分流的状态空间模型，并作了稳定性研究；应用最优控制理论得到网络最优控制的必要条件，证明了哈密尔顿函数协状态变量的稳定解性质，据此研究分析了网络最优控制的本质意义及实现途径，并给出计算及建模实例。

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。

At the early of the Intelligent Building development, every sub-system has a small scale and a few simple control objects which can be managed by people or half automation, but with the expanding of the sub-systems scale, more and more distributed control objects and equipments, many reduplicate signal cables for voice, data and control is laid, it becomes more difficult to manage and maintain, so it is needed to manage equipments and expand functions by the integration of all kinds of equipments and sub-systems in the building.

在智能建筑发展的初期，各个子系统规模小、控制对象少而简单，可以人工或半自动化方式维护管理建筑设备，但随着智能建筑中的各个系统规模的不断扩大、控制对象增加和设备的分散，同时建筑物内语音、数据和控制等各类信号的传输线缆大量重复的敷设等等都给管理和维护带来了极大的不便，为此需要通过建筑智能化系统集成将智能建筑中各类设备和子系统进行集成，更为方便地实现功能的扩展和设备的管理。

With the development of state power data network, the data information and control signal of the real-time secondary voltage control system are expected to be transmitted on the standard TCP/IP network in order to improve the flexibility and reliability of wide-area control systems.

随着电力数据信息网络的发展，为了提高控制系统的灵活性和可靠性，二级电压实时控制系统的控制信息和数据可以逐步发展到在基于TCP/IP的标准数据网络上传输。

Link-4A is mainly used to transmit interceptive target information from the command control station to the campaign plane,used widely ACLS,ATC,AIC and STK etc.

Link-4A主要用于把指挥控制站所截获的目标信息和指令传输给作战飞机。广泛应用于有航空母舰的飞机自动着舰系统、空中交通管制系统、空中拦截控制系统和突击控制系统等。

Poposed a two-time-scale rate-control algorithm for layered video transportation. Self-similarity is prevalent for variable kind of network traffic, and the traditional flow control algorithms are recognized as unappropriate for such traffic.

提出了支持分层编码视频流传输的双时间尺度速率控制策略网络聚集数据流的自相似特性使得在对数据流进行流量控制时不能采用过去的基于单一时间尺度的速率控制算法。

this paper makes the gas remote monitor network as background to do some research on the qos guarantee of the network.qos is a synthesis guide line which can be used to estimate the degree to satisfy with some server,which is a technology to solve the problem of delay and congestion in network.it must integrate multi-qos mechanism to get good qos guarantee in the practical application.three qos models in the ip net application and homologized affective factors are demonstrated.meanwhile,the field of qos protection strategy arrangement in shaanxi coal mine gas network has been picked up as the example.for this situation,the comparison to the different qos models is doing strictly.by combining the tcp congestion control arithmetic with ip congestion control arithmetic,the paper also emphatically describes the corresponded arithmetic model for that.stimulatingly,it is promoted the qos characteristic over-area effectively,which it is based on the original single congestion control.

摘 要：以陕西煤矿瓦斯监测远程联网为背景，研究其联网网络的qos保障策略实现。由于现有的各种qos实现机制无法单独为陕西煤矿瓦斯监测联网网络的qos提供保障，因此在实际应用中必须结合多种机制才能得到较好的qos保障效果。比较了传统ip网络的qos结构体系，通过分析intserv和diffserv两种模型的基本原理、工作方式，并指出其各自的优缺点和网络应用环境，设计了将rsvp协议与diffserv模型相结合来满足瓦斯监测数据传输实时性的要求；针对陕西煤矿瓦斯联网的特性，提出了将tcp拥塞控制算法与ip层拥塞控制算法相结合的算法模型，并且该模型的应用可以在原有单一拥塞控制的基础上有效地提升跨地区网络的qos特性。

this paper makes the gas remote monitor network as background to do some research on the qos guarantee of the network.qos is a synthesis guide line which can be used to estimate the degree to satisfy with some server,which is a technology to solve the problem of delay and congestion in network.it must integrate multi-qos mechanism to get good qos guarantee in the practical application.three qos models in the ip net application and homologized affective factors are demonstrated.meanwhile,the field of qos protection strategy arrangement in shaanxi coal mine gas network has been picked up as the example.for this situation,the comparison to the different qos models is doing strictly.by combining the tcp congestion control arithmetic with ip congestion control arithmetic,the paper also emphatically describes the corresponded arithmetic model for that.stimulatingly,it is promoted the qos characteristic over-area effectively,which it is based on the original single congestion control.

摘 要：以陕西煤矿瓦斯监测远程联网为背景，研究其联网网络的qos保障策略实现。由于现有的各种qos实现机制无法单独为陕西煤矿瓦斯监测联网网络的qos提供保障，因此在实际应用中必须结合多种机制才能得到较好的qos保障效果。比较了传统ip网络的qos结构体系，通过分析intserv和diffserv两种模型的基本原理、工作方式，并指出其各自的优缺点和网络应用环境，设计了将rsvp协议与diffserv模型相结合来满足瓦斯监测数据传输实时性的要求；针对陕西煤矿瓦斯联网的特性，提出了将tcp拥塞控制算法与ip层拥塞控制算法相结合的算法模型，并且该模型的应用可以在原有单一拥塞控制的基础上有效地提升跨地区网络的qos特性。关键词：服务质量；综合服务模型；区分服务模型；拥塞控制

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。