FMS故障诊断专家系统模糊推理算法的研究

本文研究了柔性制造系统（FMS）故障诊断专家系统基于模糊产生式规则的模糊推理算法，解决了模糊感观、直观现象和意向的推理问题，利用神经网络的正向推理和从故障现象到故障原因的反向推理相结合的算法，较好地满足FMS故障快速推理诊断的需要。     

FMS故障诊断专家系统知识的表示及组织

FMS是一个集机、电、液、计算机系统的复杂制造系统,此文介绍一种应用FTA法建立的FMS故障诊断专家系统中的知识表示及组织。     

基于Internet的FMS远程监测与故障诊断技术研究

目的 :提高 FMS设备故障诊断和排除的速度 ,加快维修需求的响应能力以及降低停机维修的费用 ,提高全球规范服务能力。方法 :将 FMS设备和监测计算机与 Internet相连 ,利用 L ab VIEW进行数据传输和分析 ,用 VRML 虚拟现实技术进行图象传输。结果 :提出了基于 Internet的 FMS远程故障诊断系统的总体框架及具体的信号采集和传输方法 ,建立了远程故障诊断专家系统。结论 :基于长春 5 5所 FMS设备的实验仿真证明了该总体框架和方法能够实现远程数据和图象传输 ,可以实现对异地设备进行监测和诊断     

小型FMS实时动态调度专家系统的研究和开发

专家系统是人工智能领域的工具,它和FMS实时调度系统的结合有利于解决FMS实时调度中复杂的决策问题。 本文主要介绍一种基于规则的小型FMS实的动态调度专家系统,该系统中的知识描述采用产生式规则,推理机采用控制策略推理、原推理及目标推理三级正向推理方式、初步实践表明,该系统的原理和结构是合理可行的。     

嵌入式柔性加工系统(FMS)仿真调度专家系统的研究

本文根据FMS仿真的特点,对嵌入式FMS运行仿真专家系统的结构、控制策略进行了研究。并讨论嵌入调度专家系统在FMS运行仿真与FMS运行控制系统中的应用。     

CIMS和FMS的发展及其对故障诊断系统设计的启示

围绕CIMS与FMS发展历程中所取得的失败教训和成功经验。对故障诊断系统的设计具有重要的参考价值和启发作用，文章就系统柔性、人在系统中的作用，分布式系统设计方面来说明对故障诊断系统设计具有的指导意义，同时，结合了CIMS及FMS的发展趋势；说明了新一代故障诊断系统应当坚持以“软”促硬、网络化远程服务、绿色可持续发展的原则。     

基于粗糙集的风机故障诊断专家系统知识获取

针对专家系统中知识获取的“瓶颈”问题、应用粗糙集理论建立风机故障诊断专家系统框架．并利用粗糙集的约简方法消去知识库中冗余的属性，实现了知识库的精简，有效地保持和完善了知识库的结构和性能．提高了知识获取的效率。此方法应用在风机故障诊断专家系统中．收到了良好的效果。     

机电设备智能故障诊断系统中的数据挖掘

论述了机电设备的智能故障诊断系统的设计思想、总体结构，并设计了二叉决策树和多叉决策树相结合的数据开采方法，该系统将数据挖掘与专家系统有机地结合起来，有效地解决了知识自动获取的“瓶颈”问题。     

数控机床故障诊断专家系统的设计

建立了一个数控机床故障诊断专家系统。详细地介绍了ＴＣＧ１６ＣＮＣ机床故障诊断专家系统的结构与功能，以及采用基于知识的诊断推理，诊断目标的建立、诊断知识库的组成两个关键性技术问题的解决方法。最后介绍了ＴＣＧ１６ＣＮＣ机床故障诊断专家系统在工厂的应用。     

挖掘机液压系统故障诊断专家系统

液压设备的故障诊断和维修是一项复杂的工作,需要应用大量的专家经验和诊断策略才能解决复杂故障的诊断问题。为此,我们收集了大量的液压挖掘机故障诊断专家知识和经验,利用专家系统工具及良好的人机管理系统,编制了具有实用性的挖掘机液压系统故障诊断专家系统——ESFDHS,使该系统的诊断工作科学化,也提高了诊断的准确率和效率。     

FMS故障诊断专家系统的研究与设计

介绍了一个ＦＭＳ故障诊断专家系统（ＦＭＳ－ＦＤＥＳ）的结构和ＦＭＳ的故障建模方法，讨论了系统中采用的故障处理策略、知识表示方法及推理机制。     

FMS集成故障诊断系统的设计与实现

根据ＦＭＳ故障的表现形式及其诊断过程，设计了一个集加工过程状态监测与故障诊断于一体的集成诊断专家系统，给出了系统的硬软件结构，并从诊断知识的获取与表示、故障数据的采集以及集成诊断推理机制等方面，介绍了系统的实现方法     

FMS 状态监测与故障诊断总体方案探讨

从柔性制造系统（ＦＭＳ）的故障机理入手，分析研究了ＦＭＳ状态监测与故障诊断总体框架及策略，包括：ＦＭＳ状态监测方法，ＦＭＳ故障简易诊断与精密诊断策略，ＦＭＳ状态监测与故障诊断分层实现模型。     

CNC-implemented fault diagnosis and web-based remote services

Recently, the conventional controller of machine-tool has been increasingly replaced by the PC-based open architecture controller, which is independent of the CNC vendor and on which it is possible to implement user-defined application programs. This paper proposes CNC-implemented fault diagnosis and web-based remote services for machine-tool with open architecture CNC. The faults of CNC machine-tool are defined as the operational faults occupied by over 70% of all faults. The operational faults are unpredictable as they occur without any warning. Two diagnostic models, the switching function and the step switching function, were proposed in order to diagnose faults efficiently. The faults were automatically diagnosed through the fault diagnosis system using the two diagnostic models. A suitable interface environment between CNC and developed application modules was constructed for the internal function of CNC. In addition, a suitable web environment was constructed for remote services. The web service functions, such as remote monitoring and remote control, were implemented, and their operability was tested through the web. The results obtained through this research could be a model of fault diagnosis and remote servicing for machine-tool with open architecture CNC.     

FMS 远程监测与故障诊断技术

目的：提高ＦＭＳ设备故障诊断和排除的速度,加快维修需求的响应能力以及降低停机维修的费用,提高全球规范服务能力。方法：将ＦＭＳ设备和监测计算机与Ｉｎｔｅｒｎｅｔ相连,利用ＬａｂＶＩＥＷ进行数据传输和分析,用ＶＲＭＬ虚拟现实技术进行图像传输。结果：提出了基于Ｉｎｔｅｒｎｅｔ的ＦＭＳ远程故障诊断系统的总体框架及具体的信号采集和传输方法,建立了远程故障诊断专家系统,实现远程数据和图象传输,可以对异地设备进     

An Assessment Framework for Optimal FMS Effectiveness

Equipment failures in an FMS are significant to performance and can lead to costly, incorrect decisions. Fortunately, effectiveness measurement techniques can be mapped to clever modeling frameworks to help predict, track, and then improve upon the FMS performability or mission effectiveness, and improve maintenance. This article provides sources and guidelines for efficient and effective FMS modeling, a framework for applying the modeling to predict the impact on customers from their point of view, and a method for tying it all together for improving the FMS effectiveness. It is not enough to simply examine the working and failed states of an FMS or even to calculate common reliability metrics. It is necessary to consider the FMS as a whole, and that system includes the needs of the customer and the business. It is also necessary to be purposeful about the measures of performance selected and to support the measures of effectiveness.In this article, we present: a framework for considering customer needs in the measures of effectiveness for FMS; modeling approaches for solving for effectiveness measures; and an example to show how to apply it to an FMS, to improve it or plan for meeting specific customer needs.     

电机振动故障诊断方法

提出了分析诊断振动故障的三个步骤.并归纳出电机在各种运行条件下振动故障的信号特征,为分析处理振动故障提供了操作性极强的诊断方法.     

Modeling and analysis for a kind of flexible manufacturing system involving time factors

Time control and management are important in flexible manufacturing systems (FMS). The time to finish the machining unit is uncertain because of the uncertainties of the workpieces, so the whole time to finish the FMS is also variable. In order to reduce the time to finish for the whole FMS to improve efficiency, the modeling and analysis method for this timing kind of FMS based on standard Petri net is proposed. The modeling method is a mapping from the machining units to the component of a Petri net, and the timing factors are represented by a timing function on the place set. With the Petri net model obtained and its reachability graph, the timing factors influencing the implementation of the FMS are analysed and presented. In addition, the method is obtained to find the best state line for the implementation of the FMS.     

基于数字图像处理的齿轮减速器磨粒检测

润滑油液分析是获得机械设备故障信息的重要途径之一。本文把数字图像处理技术中图像滤波、二值化、形态学运算等方法应用到齿轮减速器磨粒检测中,提出了一种简便、快速、高效的磨粒数量、大小及形状的检测分析方法,从而为齿轮减速器的故障诊断与维修提供可靠的依据。