So concretely making to come up the realization details , the system needs to divide into three parts , one part is facing to the terminal users , one part is facing to the administrators , and the other part is facing to the medical expert . the medical expert inputs relevant medical knowledge , and the terminal users inputs relevant information , then systematic tools 具体到实现细节上来,系统需要分成三个部分,一个部分面向终端用户,一个部分面向系统管理员,一个部分面向医疗专家。医疗专家输入相关的医学诊疗规则,终端用户输入相关个人疾病的信息,然后系统工具按照相应的推理策略从规则库中查询并且诊断分析出信息呈现给用户。
System diagnosis and componentsdiagnosis can query the fault cause or fault place according to the visible fault phenomenaand can query the solving methods according to the cause and the pla ce . expert systemdiagnosis adopts man - computer dialog piatform , producing method , fault tree analysis andforward chaining . the user of hydrauiic equipment can eliminate the malfunction by thediagnosis of the software according to the visible phenomena 其中系统诊断和元件诊断能够根据所需诊断系统(或元件)的故障现象诊断出可能的故障原因或部位，再根据找到的部位查得故障的排除方法；专家系统诊断采用了人机交互式界面、产生式规则表示法、故障树的诊断模型、深度优先搜索法和正向推理策略。
Expert system of oil monitoring is a computer program , which is provided with experience of domain experts , strategy of knowledge reasoning and ability of resolve problems . it is the characteristic thing for expert system to answer the difficulty of or badness results of purpose which human experts are requested to 油液监测专家系统是一个计算机程序，具有油液监测领域专家的经验、知识推理策略和解决问题的能力，一般以求解那些需要人类专家才能求解的高难度问题或不良结果问题为特征。
Though constructing the knowledge in the knowledge base , inputting a related medical diagnosis rule and some information of the hospital , the terminal user input the information to inquire about . and then the system according to certainly logical strategy to carry on inquire and diagnose the patient , and then draw certain conclusions 本系统通过构造知识库中的知识,即预先输入医学相关的诊断规则和医院的一些相关信息,终端用户输入信息进行查询,系统根据一定的推理策略进行查询和诊断,进而得出一定结论。
Their inference machines work on the basis of the realize conditions , deduce a certain conclusion ( or a middle conclusion ) depending on their special inference strategies , and then , the middle conclusion puts in the bases of realize conditions , so , the next deducing works as the last , the process will be over until the expectation result comes 传统的专家系统,以知识库为基础,以推理机为核心,结构清晰,易于理解。这类专家系统的推理机以现实环境条件为基础,根据特定的推理策略,以知识库中的知识作为匹配基础,推导结论(中间结论) ,重复这样的过程,直到结论出现。
In this thesis the theory and method of intelligent fault diagnosis for a large turbo - pump fed liquid - propellant rocket engine ( lre ) is innovatively proposed and developed , based on the hybrid reasoning strategy and the hybrid knowledge models including mathematical model , logic model , graphic model and qualitative model . the theory and method are constructed in the way of intelligent modeling technique and creative application of knowledge engineering , and focus on the difficult problems and critical techniques such as the unified treatment of lre knowledge ( experience , facts , rules , graph , system structure , behavior , model knowledge and measured data ) , the integration and translation of qualitative and quantitative knowledge , and the knowledge - based intelligent fault diagnosis reasoning methods . firstly , besides the correlation of different knowledge , the concept and the types of lre diagnosis knowledge are systematically described 本文以某大型泵压式液体火箭发动机为研究对象，以智能建模技术和知识工程的创造性应用为主要技术手段，围绕着发动机知识(经验、事实、规则、图形、结构、行为、模型知识与测量数据信息等)的统一处理技术、定性定量知识的集成与转化和基于知识的智能故障诊断推理等关键技术和难点，创新地研究发展了发动机基于混合知识模型(数学模型、逻辑模型、图形模型及定性模型)和混合推理策略的智能故障诊断理论和方法。
