实现内燃机振动故障诊断专家系统的方法

本文结合传统的振动诊断技术，模糊诊断方法和人工智能技术，对专家系统在内燃机振动诊断方法的应用进行了初步的探讨。     

机械无级变速器选型专家系统控制策略的研究

结合系统分析方法，探讨了提高无级变速器选型专家系统运行效率及智能化的途径，提出了基于层次分析法的专家系统控制策略，研究了层次分析在多目标推理，调整及多方案决策等方面的应用。     

中小型汽轮机径向滑动轴承设计专家系统的研究(一)——一、专家系统及机械设计专家系统的作用和特点

本文简要介绍了专家系统的作用、结构及工作原理;阐明知识表示、知识获取及知识利用,为建立专家系统的3大关键技术的基础。最后阐述了机械设计专家系统的难点及现状。     

A rapid method for diagnosing regional metastases of papillary thyroid cancer with morphometry

Morphometry of the lymphoid cells was performed with a computerized image analyzer. Database formation was performed automatically using our own new software. The initial database of calculated mean values, of constructed histograms, of regression, and of discriminant analysis was transformed into a set of morphometric features. Eight morphometric features were selected for characterizing two separate populations of the lymphoid cells: one from the lymph node tissue with a malignant tumor and the other without any tumor (control). The eight features ensured the least overlap between the two groups of lymphoid cells. The eight features formed the basis of the decision criteria for identifying a patient with a malignant pathology. A weighting coefficient was calculated for each feature. It was ascertained that the presence of the regional papillary thyroid cancer metastases causes significant changes in the relationship between small (diameter 7.5 mum) lymphoid cells of the cervical lymph nodes. The morphometric changes were assessed by our diagnostic index. The expert diagnostic system was developed on the basis of a set of quantitative features and their boundary values. This system highlights the morphometric changes in the population of the cervical lymph nodes lymphoid cell with metastases versus control. Clinical trials have shown that the expert diagnostic system's conclusions coincided with the histological diagnosis in all the cases. The expert diagnostic system, image processing, database formation, assessment of lymphoid cells morphometric features formed the basis of the rapid method of diagnosing regional metastases of papillary thyroid cancer. The diagnosis was performed in automatic mode. Taking into account that about 30-50% of aspiration smears contain only blood cells (absence of specialized cells such as thyrocytes), the use of our method should greatly improve the cytologic diagnosis of regional metastases of papillary thyroid cancer.     

低温压力容器焊接工艺设计专家系统

根据低温压力容器焊接工艺设计的要求建立了数据库。以获取专家经验及领域知识为目的建立了知识库，依据推理过程的需要建立了推理规则库。该专家系统主要是针对低温容器用钢而进行的焊接工艺设计．不仅可以进行单一焊接方法的工艺设计，而且可以进行组合焊接方法的工艺设计。同时．提供了方便的知识库维护方法，用户可以不断更新知识库，满足新的需要。     

基于知识的冷冲模选材及热处理专家系统的研究与开发

在总结冷冲压模具基本选材原则、典型热处理规范。以及行业经验的基础上．借助计算机技术、专家系统技术和数据库技术，开发出了基于Windows平台的冷冲压模具选材及热处理方案制定专家系统，实现了冷冲压模具常用零件选材及其热处理方案制定的计算机化和准智能化。本文研发的专家系统可以根据用户提供的冷冲压工艺类型、制件材质、尺寸精度、表面粗糙度及其板料厚度、生产批量等综合信息．应用基于规则的正向推理机制，结合知识库中的专家知识，高效可靠地从数据库中挖掘满足冷冲压模具制造和使用要求的候选模具材料．以及推荐的热处理工艺方案。     

焊接接头机械性能预测专家系统——PPES

本文利用Ｔｕｒｂｏ－ＰＲＯＬＯＧ语言，建立了一个焊接接头机械性能预测专家系统，本系统不仅能够进行焊接工艺设计，而且能够预测根据设计书施焊后的焊接接头机械性能，经过试验证明，预测结果可靠，完全可以代替部分焊接工艺评定工作。     

铝合金钎焊工艺专家系统研究

将数据库和计算机程序设计引入焊接专家系统,运用人工神经网络理论实现铝合金钎焊工艺优化设计,研究出NNM算法,并以VB.NET为开发工具、SQL Server 2000为数据库管理系统,设计并开发了铝合金钎焊工艺专家系统.     

用Visual C++开发气体保护焊工艺专家系统

介绍了知识的规则式表示方法，并用C^ 语言构造了规则类的一般描述，探讨了利用Visual C^ 及MFC DAO数据库技术开发气体保护焊工艺专家系统的方法。     

基于经验的铝电解生产专家系统

本文介绍了以专家经验——人工法则——模糊规则所形成的铝电解专家系统，使电解生产过程控制和管理提升到一个新的水平。