诊断专家

The traditional Expert System of fault diagnostician is a aptitude diagnose model based on sign reasoning and is a computer programs to solve the problems in the field at the expert level.

传统的故障诊断专家系统(Expert System，简称ES)是基于符号推理的智能诊断模型，是在故障诊断领域内以人类专家水平去解决该领域中困难问题的计算机程序。

Give out above all the formalization definition of system of diagnostician of breakdown of shuttle type kiln, then the principle that labor designed each component; of expert system to introduce use fault tree to design a knowledge base mainly finally and method, and the algorithm that use fault tree will come to undertake breakdown diagnoses inference.

首先给出梭式窑故障诊断专家系统的形式化定义，进而具体分析并设计了专家系统的各个组成部分；最后重点介绍使用故障树来设计知识库的原理和方法，以及使用故障树来进行故障诊断推理的算法。

Today, a lot of application systems combine with GIS, such as diagnosis Expert System including the diagnosis the varies aspects of society, economy, and agriculture; forecast Expert System including the forecast of weather, hydrometeorology, population, geography, economy, military affairs, politics, etc; Decision Supporting System including the aspect of engineering design, programming, consultation, management etc.

现在许多应用系统所涉及到的问题都与地理信息有关，例如：诊断专家系统中的社会、农业、经济等方面的各种诊断和排错系统；预测专家系统中的气象、水文、人口、地理、经济、军事以及政治等方面的预测分析系统；工程设计、规划、咨询和管理决策等方面的专家系统，都离不开地理信息的支持。

The fault diagnosis expert system using the artificial intelligence technology is the progressing tiend of equipment fault diagnosis, however, as typography being so complex, there are still many uncertain and incomprehensive factors that hide the establishing of expert system. So far, there is still no report of Printing Machine Fault Diagnosis Expert System.

利用人工智能技术的故障诊断专家系统是设备故障诊断的发展方向，但由于印刷工艺的复杂性，有许多不精确、不完全了解的因素致使专家系统的建立有较大困难，至今尚未见到印刷机故障诊断专家系统(Printing machine Fault Diagnosis Expert System，PMFDES)的问世。

Log. In this paper, the technique of automotive diagnosis is analysed,the knowledge representation, the search theory and the structure of thesystem are described.

为了方便地建立汽车故障诊断专家系统，作者在IBM PC/XT微机上开发了"汽车故障诊断专家系统开发环境"计算机软件系统。

After analysis and parison of virtues and hort ings of existing systemsafety evaluation ways, Artificial Neural Network, Artificial Intelligence and Expert System are used to build new system safety evaluation means. System safety evaluation model and intelligent expert system for fault diagnosis based on ANN have been put forth. Development and realization of visual neural network for system safety valuation and fault diagnosis provides new idea for system safety evaluation and accident mode diagnosis.

对已有的系统安全评价技术方法的优缺点进行了分析和对比，继而将神经网络技术、人工智能技术、专家系统应用于开发新的系统安全评价方法，提出了基于人工神经网络的系统安全评价方法和基于神经网络的智能故障诊断专家系统模型，开发了可视化的神经网络系统，为系统安全评价与事故模式诊断提供了新思路。

ABSTRACTS In this thesis the diagnostic expert system theory and methodology are studied, with the emphasis on the fuzzy knowledge representation, uncertain reasoning and diagnostic knowledge acquisition. The applications of neural networks in the fault diagnosis for rotating machinery are also studied. A fuzzy diagnostic expert system for turbocompressor called ETHYLENE is implemented.

本文以大型旋转机械为研究对象，着重研究了旋转机械故障诊断专家系统的理论和方法，包括模糊知识表达、不确定性推理与诊断知识获取等问题；本文还研究了神经网络模型及其在旋转机械故障诊断中的应用；并研制了一个透平压缩机组模糊诊断专家系统。

Based on the contrast with other method, the way "Frame + Rule" is choused to store the knowledge. Directing against the characteristic, put forward positive and negative to the tactics of mixing reasoning. At last adopting the thought of the soft project, the modularized and open system of hydraulic turbine group is realized by Delphi 6, which is an object-oriented language.

在本文中，研究了水轮机组的状态监测和故障诊断整个系统，阐明了系统主要内容和总体框架，并着重研究了作为专家系统核心的知识库及管理系统的构建方法，在比较的基础上采用了&框架+规则&的组合存储方法，并且针对特点提出了正反向混合推理的策略，最后采用软件工程的思想，用Delphi6.0编程实现了具有模块化和开放式的水轮机组的故障诊断专家系统。

The expert system, worked on rule, adopted the discharge signal and DC leakage current value as its characteristic parameters, and then diagnosed the insulation state of DC feeder cable by the values of the characteristic parameters.

直流馈出电缆绝缘诊断专家系统采用基于规则的专家系统实现，系统通过采用数据处理后提取的放电信息，直流泄漏电流幅值信息作为电缆绝缘性能诊断的特征参数，进而根据所获得的特征参数值来进行直流馈出电缆绝缘性能的判别。

This dissertation, orienting to practical engineering applications, takes the lead in carrying out domestic investigations on expert system of fault detection and diagnosis for aerospace propulsion system and has successfully established a well-performed expert system for fault detection and diagnosis based on advanced theories and technologies. What is more, some research has been conducted on the new algorithmic method for fault detection and diagnosis; bondgragh method has been successfully used for fault detection and diagnosis in aerospace propulsion in the dissertation.

本文在国内首先应用先进的理论和技术，面向工程应用的实际，开展了空间推进系统故障检测与诊断专家系统的研究工作，并建立性能良好的故障检测与诊断专家系统；还进行了故障检测与诊断新算法研究，成功的运用键合图理论完成了空间推进系统的故障检测与诊断研究。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。