故障诊断

Meanwhile, it has more proven this intelligent fault diagnosis method which has merged the advantages of ANN and ES can solve the equipment fault diagnosis problem that faults have pilosity nature, uncertainty and disguise such as the Condensation Equipment. The diagnosis results are precise and credible.

进一步证明了基于神经网络与专家系统结合的智能故障诊断方法能够很好地解决象凝汽设备这类故障具有多发性、不确定性等特点设备的故障诊断问题，其诊断结果精确、可靠。

Intelligent fault diagnosis system of vibratory road roller which consists of neural network and expert system is built in this paper by detailed analysis of structure and principle of vibratory road roller and comparison of main methods of building fault diagnosis system, this system can diagnose usual fault of vibratory road roller.

本文通过对振动压路机结构及原理的详细分析，对构建故障诊断系统主要方法的比较，建造了神经网络与专家系统相结合的振动压路机智能故障诊断系统，实现了对振动压路机常见故障的诊断。

The system structure, functions and diagnostic flow are introduced briefly, and the modeling, matrix and the rule of inference are described.

简要介绍了双向联想记忆神经网络故障诊断系统的系统结构、软件系统功能及诊断流程，并以主机无显示故障为例，详细描述了故障诊断模型、M矩阵的建立、推理过程、解释机制的构建原理。

Introducing fault diagnosis expert system into fault diagnosis of self-propelled gun can provide new method for fault diagnosis.

将故障诊断专家系统引入自行火炮故障诊断领域为自行火炮故障诊断提供了新的方法。

Based on adequate survey to faults of sodium pump for The China Experiment Fast Reactor, in order that the advanced diagnosis methods are used in the sodium pump which is under fabrication, different methods of fault diagnosis system of sodium pump are designed and programmed; and the principal component analysisis used to fault diagnosis system of main coolant pump in a nuclear power station. The feasibility of fault diagnosis systems developed have been proved by simulation results.

本课题对中国实验快堆钠泵的故障进行了研究，把先进的诊断方法应用到正在制造中的钠泵上，设计和开发了不同方法的钠泵的故障诊断系统；同时也应用主元分析方法，建立了某核电厂的主冷却剂泵的故障诊断系统，仿真实验证明了以上三个系统的可行性。

This paper introduced rough sets data mining method to take potential diagnosis rule from the fault diagnosis decision-making table of steam turbine unit. These rules can offer effective fault diagnosis service for steam turbine unit.

将汽轮机组故障历史数据进行模糊化及离散化处理，构建故障诊断决策表，以决策表作为主要工具，即"知识库"，采用模糊粗糙集数据挖掘方法直接从决策表中提取出潜在的诊断规则，为汽轮机组提供有效的故障诊断。

The method of minimum tolerance is an optimal estimation algorithm, its amount of computing labor is less than that of existing methods yet the effect is the same.

文中推导了模块故障诊断方程，讨论了模块级故障诊断的自身特点及与其它诊断方法的关系，并对故障可测性、算法和非线性等问题进行了详细的研究。

Accordingly, the vibration theory, vibration sources and the part vibration fault features of turbine generator units are analysed, sorted out and finalized so as to lay a solid foundation for the establishment of fault diagnosis expert knowledge bank.

本文首先论述了水轮发电机组故障诊断的重要意义，详细分析了故障诊断的研究现状及发展趋势，并对故障诊断的应用前景做了进一步分析。

The paper studies fault diagnosis technology based on fruticose gas pipe network which is universal in small towns,and gives a particular description of domestic and foreign gas pipe network fault diagnosis technique based on hardware and software currently. The author uses graph theory to build up hydraulic analysis model of natural gas network and presents its solution methods. Besides, the author works out the relation between gas pipe pressure and flux in unsteady condition of fluid flow according to pressure boundary condition and differential equation group, and puts forward fault diagnosis methods and steps of the fruticose natural gas pipe network of middle pressure based on the simplification of this relation.

本文针对小城镇比较普遍的枝状天然气分配管网进行故障诊断技术研究，详细叙述了目前国内外基于硬件和软件的燃气管网故障诊断技术，利用图论理论建立了天然气管网水力分析模型并叙述了其求解方法，根据燃气管内流动的微分方程组和压力边界条件求解出非稳定流动时燃气管道压力和流量的关系，并在对此关系进行简化的基础上提出了基于中压枝状天然气管网的故障诊断方法和步骤。

We put forward firstly a sufficient and necessary condition of one stept fault diagnosablity based on testing each other between the nodes, by means of the maximum independent set theory in graph. It establishes a foundation for the SFD of computer network.

本文首次将图论中的极大独立点集理论用于系统级故障诊断中，获得了一个简明、直观、易操作的，且基于相互测试的判定系统一步t故障可诊断的充要条件，补充了文献[10]的充要条件，并奠定了网络环境下系统级故障诊断研究的基础。

The big eared hedgehog, the little owl, the sand gecko, the three-toed jerboa, and every show needs a villain - saw-scale - the viper!

大耳刺猬，小猫头鹰，沙壁虎，三趾跳鼠，每场戏都需要反派角色：蝰蛇。

Plasmodiophora brassicae ; resting spores ; density gradient centrifugation of sucrose ; ultrasonic disruption

根肿；休眠孢子；蔗糖密度梯度离心；超声波破碎