系统的

The research work of this paper is divided into five parts: The first ,according to the work characteristics of ship's auxiliary boiler, this paper is to design applied project in the automatic control system of ship's auxiliary boiler; The second, according to the work request of the cargo winch of alternating three-speed change-pole speed-adjusting, this paper is to determine adopting the method of the PLC control; The third, this paper is to design PLC application in three -phase induction motor control, to give the ladder chart, program and input and output circuit diagram; The fourth, this paper is to research the method of the ship's combined starting screen automatic control with the PLC; The fifth, this paper is to inquire the possibility of apply the PLC in ship's engine room surveillance system; According to the comprehensive analysis of above actual example of ship's auxiliary machinery automatic system with the technique of PLC; not only can use the technique of PLC to replace traditional relay-contactor control technique in ship's auxiliary machinery automatic system, but also can get the conclusion of the former is more dependable and more clever than the latter, the maintenance is more convenient, thus develop a new path for ship automation.

本文研究的工作主要包括五个部分：第一，根据船舶辅锅炉的工作特点，设计PLC在船舶辅锅炉自动控制系统中的应用方案，主要有PLC选型及输入输出点的设计，画出系统控制梯形图并分析工作原理；第二，根据交流三速变极调速起货机的工作要求，确定采用PLC控制的方法，进行控制系统的硬件设计和软件设计，并分析工作原理：第三，设计了PLC在三相异步电动机控制中的应用，给出了控制梯形图、程序及输入、输出接线图；第四，研究了用PLC实现船舶组合起动屏自动控制的方法，进行了系统的电源设计和软件设计，给出系统工作流程图；第五，探讨了船舶机舱监视系统应用PLC的可行性，将继电器报警线路改为用PLC控制报警，给出系统硬件图和软件梯形图，并分析了PLC机的选型、抗干扰和应用PLC的经济效益和社会效益等问题。综合以上船舶辅助机械自动控制系统采用PLC技术的实例分析，可以得出船舶辅助机械自动控制系统不但可以使用PLC技术取代传统的继电器接触器控制技术，而且前者比后者更可靠、更小巧，维护保养更方便的结论，从而为船舶自动化开辟了一条新的路径。无忧毕业设计网 www.5ubs.cn

The process of random load action was described with the Poisson stochastic process and the time de pendent reliability models of series system, parallel system and k/n system were developed with the probability differential equation and total probability formula when strength degenerated as time, Taking the degeneration of strength following the exponential rule as an example, the relationships between the reliability and failure rate of system and time were studied.

采用泊松随机过程来描述载荷的作用过程，运用概率微分方程和全概率公式建立了强度随时间退化时的串联系统、并联系统以及k/n系统动态可靠性模型。以强度退化服从指数退化规律为例，研究了串联系统、并联系统以及k/n系统的可靠度和失效率随时间的变化规律。

So that, we should do some effective transfor2 mation among these three systems, including time system and coordinate system. For the requirement, the time system and coordinate system for each of them are analyzed in details. And then, the method of time transformation and the model of coordinates transforma2 tion among GPS, GLONASS and GAL ILEO are p roposed based on lots of integration, certification and calculation.

这就需要我们对此三个系统的时间系统以及坐标系统进行有效的转换，本文就是基于这样的需求，详细介绍并分析了此三大系统中各自的时间系统与坐标系统，通过对多方资料的综合、推证与计算，综合得出GPS、GLONASS以及GAL ILEO三大系统间的时间转换方法及坐标转换模型与公式。

The paper mainly concerns about:(1)Proposing the idea of completing the job using GIS software by discussing deficiency of the traditional transportation job;(2)Discussing the transportation plan algorithm and the flow, in this foundation, designing the transportation model programming realization flow chart;(3)With the comparison of the domestic and foreign GIS software platform, determining ArcGIS Desktop which has large drawing edit and spatial analyse functions as the development platform of transportation planning;(4)In the data organization and the database establishment, by using the recent object-oriented spatial data— Geodatabase and UML, completing the system database design and establishment, including spatial database, attribute database as well as transportation network database

详细研究内容如下：(1)论述了传统交通规划软件存在问题，提出了利用GIS平台开发交通规划系统的基本思想；(2)论述了交通规划的算法和流程，在此基础上，设计了交通模型编程实现的流程图；(3)通过比较国内外GIS软件平台，选定了具有强大图形编辑和空间分析功能的ArcGIS桌面版为交通规划系统的开发平台；(4)在数据的组织和数据库的建立上使用新的面向对象的空间数据—Geodatabase，并利用统一建模语言UML完成了系统数据库的设计与建立，包括空间数据库，属性数据库以及交通网络数据库；(5)论述了系统编程实现的基本方法，在ArcMap下采用VBA编程方法自由地定制了系统界面；(6)利用ADO Data和数据网格控件存取交通规划系统预测功能所需的数据库；(7)采用VB对ArcObject控件扩展开发方式，实现系统功能的开发，即利用COM技术的扩展性在VB中创建ActiveX动态链接库来实现特定的系统功能，并集成在ArcMap中运行；(8)系统完成了交通发生预测、交通分布、缓冲区分析、道路的网络分析、公交

As a corollary, we solve a conjecture of Liao, i.e., the following four conditions are all equivalent: 1 the system is structurally stable, 2 the system is in the interior of the set of Kupka-Smale systems, 3 the obstruction set and the interior of singularities of the system are empty, 4 the system satisfies Axiom A and the strong transversality condition.

作为一个推论，这解决了廖山涛先生的一个猜测，即下述四个条件等价：1 系统为结构稳定的，2系统及其附近的系统皆为Kupka-Smale系统，3系统的阻碍集为空集，4 系统为公理A且满足横截性条件。3→4，4→1，1→4已经分别由廖山涛， Smale、 Anosov、 Robbin、 Robinson以及Robinson完成。

On the base of studying application methods and relative information of the relative chips, the paper designed the system hardware ,including LCD interface designing、video gathering chip and its peripheral circuit designing、FPGA chip and other module interface designing; 3、The LCD controller module、video in controller module、configuration initialized module of the video image decode chip、FPGA and program of module interface were all compiled and debugged in the paper. 4、The whole system debugging was carried through, and the video image data storage and displaying on LCD screen was carried out in the paper. The paper first designed the system frame, then designed hardware platform according to the system frame and then analyzed it、debugged it, finally,compiled the module code and debugged the whole system to achieve system requirements.

本文具体研究工作主要体现在以下几个方面： 1分析了的嵌入式视频图像采集、处理与LCD显示系统的总体需求，设计了基于NIOSⅡ的嵌入式系统总体架构； 2在学习相关芯片的具体应用方法和相关知识的基础上，设计了系统的硬件，包括LCD接口设计、视频采集芯片及外围电路设计、FPGA芯片和其他模块接口主板设计； 3编写并调试了LCD控制器模块、视频输入控制器模块、视频解码芯片初始化配置模块、FPGA和各个模块接口程序； 4进行了整个系统的联调，完成了视频图像数据存储并通过LCD显示；本文首先建立了系统架构，然后根据系统架构进行硬件平台的设计并对硬件平台进行分析和调试，最后编写个模块代码并完成系统联合调试实现系统要求。

The modeling and simulation technology already have the ability of description and display from local system to the whole, from physics system to complex system, from actuality to the future, and this technology can play a divinable, demonstrative, validation and evaluated role on system model obtained from structuring system's different level and models of different aim and development, betterment and betterment of all kinds of systems.

建模与仿真技术已经具备从系统局部到整体、从物理系统到复杂系统、从现状到未来的描述能力及模型演示能力，对系统不同层次、不同目的模型的结构化组织获得的系统模型，对各种系统的建设发展、改进与变革可以起到预测、演示、验证和评估的作用，建立有效的知识管理与变革管理机制，实现复杂系统进化的可靠、有效和平稳过渡。

At the beginning of the paper, a literature review on the domestic and abroad researches of Container Terminal logistics system is provided introducing some computer simulating model technology apply case on Container Terminal logistics system on the domestic and abroad; secondly this article introduce the element and characteristics of Container Terminal operation system ,specially operation flow , controlling principle (including gate testing principle, ship controlling principle , quay operating principle , yard I/O operating principle , yard running system),followed by quality evaluating index and empiristic formulas of Container Terminal .

本文首先回顾了国内外集装箱码头物流系统的研究动态，介绍了国内外计算机仿真技术在集装箱码头物流系统仿真中的应用情况，然后介绍了集装箱码头作业系统的组成和特点，以及其装卸工艺、作业流程、操作原则(包括大门检查箱作业原则、船舶调度管理原则、码头前沿操作原则、堆场存取箱作业管理原则、堆场管理系统)，接着介绍集装箱码头系统的性能评价指标和码头通过能力经验公式及出入口车道数计算，并结合天津港集装箱码头物流系统的特点，系统地介绍了天津港集装箱码头的基本组成、布局、装卸工艺、作业流程后，评估了集装箱码头物流系统的相关性能指标，并结合实际码头的历史数据，介绍一些相关的经验公式。

This paper puts forward that a distributed control system can be used to monitor and control vessel gate within a real-time or remote distance,the basic project,structure,applications and functions of computerized SCADA system in hydraulic system of vessel gate is introduced.A double layer network structure,Epigynous and hypogynous machine network,is applied to this system.In accord with the application of technique such as PLC,integrated software etc,this paper introduces the methods and application to achieve the computerized SCADA system in the task,and analyzes the characteristic of this system.

另外，本文提出了建立船闸控制系统的分布式控制系统，介绍了船闸液压控制系统的计算机监控系统的方案、结构、应用和主要功能，采用双层网络化结构：上位机网络和下位机网络，并结合PLC通信网络技术和组态软件等技术构成的计算机监控系统的实现方法，实际应用，分析了这种较新的系统模式在船闸液压控制系统的计算机监控系统的功能实现中所具有的特点。

The national park is non-rival within its tourism carrying capacity, and it is excludable because only the tourists buying entrance fee can be permitted to visit the park.

自然类和综合类国家公园是一个完整生态系统或者一个生态系统的一个部分，因而，具有一般生态系统都具有的生态系统服务功能，因此，要放在生态系统的背景里，完整地理解其价值。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失