故障诊断

This paper introduces hardware and software design of data acquisition system in mine crusher fault diagnosis.

本文以该设备故障诊断为研究对象，介绍了在破碎机故障诊断系统中数据采集子系统的软硬件设计方案，对破碎机故障诊断系统的开发有一定的作用。

Secondly, with the reference of the fuzzy properties of FD and the severe defaults of two-value logic model, FL is introduced to design a general Fuzzy Logic Fault Diagnostic program. This program is used in Fuzzy Pattern Recognition of fuzzy logic diagnostic model.

鉴于故障诊断的模糊性和二值逻辑的严重缺陷，引入模糊逻辑，编制了一个通用模糊诊断程序，对基于模糊逻辑的诊断模型进行模糊模式识别，根据用模糊语言表述的故障征兆，得出发生各种故障的隶属度。

Combined with fault diagnose of the hobber ,a simple and practical method of fault diagnose is brought up,raising its accuracy and efficiency and has better spread value.

结合滚齿机液压系统的故障诊断实例，提出一种简便、实用的故障诊断方法此方法提高了故障诊断的准确性和效率，具有较高的实用推广价

The neural networks fault diagnosis system based on intelligent technology is developed by use of neural networks'characteristic of nonlinear mapping to impend over aeroengine which is a complicated nonlinear ...

在此基础上，提出了航空发动机全包线内故障诊断的方法，并使用Visual C++编程语言，开发了故障诊断软件模块，可以实现全包线内的在线故障诊断功能。

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。

Secondly, the power system fault diagnosis analytic model which use both protect andswitch action information is proposed in this paper, it can be described as 0-1 integerprogramming with nonrestraint, reshut break is introused in the analytic model and introducethe contribution factor to the protect, this model solve the fault diagnosis problem in which theprotect information is lack in a certain extent, and present the experienced formular which isused to decide all kinds of protect contribution factor.

然后，提出同时利用保护和断路器动作信息的电力系统故障诊断的解析模型，其可以描述为一个无约束 0-1 整数规划问题，将重合闸引入故障诊断的解析模型并且对保护引入贡献因子，给出确定各种保护贡献因子的经验公式。这种模型在一定程度上解决了数据信息不完整时的电力系统故障诊断问题。

In this paper, many sensor networks are distributed at different areas, firstly the local fuzzy neural network fuses the information from corresponding sensor network in character level, secondly the outputs,which are diagnosis conclusion, are fused by terminal neural network in decision level.

电力系统的继电保护和故障诊断一直是人们研究的重要课题，一旦系统发生故障，如何尽快识别故障类型、判断故障位置、及时跳闸保护以及故障排除后迅速恢复供电等，开发出这样一个实用可靠的继电保护和故障诊断系统势在必行。

The system can monitor on line operation state of the boiler system, including overall monitor of the boiler system, major monitor of boiler, run tending monitor, bar figure display and overrange alarm.

故障诊断根据锅炉运行状态监测情况，确定锅炉系统运行中出现的故障征兆，采用深、浅知识相结合的混合诊断推理机制，分析诊断锅炉系统在运行过程中可能出现的各种故障，如炉膛灭火，过热器爆管，省煤器磨损、泄漏，空气预热器积灰、泄漏，锅炉满水、缺水等常见故障。

First,the maximum likelihood decoding theory is adopted to correct the aberrated alarm.Toovercome the drawbacks of traditional models based on Petri nets,a new diagnostic modelbased on the elementary net is built.Then correct alarms are fed into the new model tocarry out the diagnosis process.

首先采用最大似然译码原理对监测到的信号进行信息校正，然后针对现有Petri网故障诊断模型难以准确模拟实际故障清除过程的问题，建立了基于基本网理论的故障诊断模型，并利用编码基本网理论对无畸变的信号进行故障诊断。

The components and contents of gases dissolved in transformer oil can be used to reflects internal insulation faults of operating transformer.2Through studying the three-ratio method which is the common transformer faults diagnosing method, thought it is very accurate, it is inability to faults diagnose of electrical equipment such as transformer that the fault reason, phenomenon and principle coexist indeterminacy ect.

2通过对判断变压器故障常用的三比值法的分析，指出其诊断准确率高，但对故障原因、故障现象和故障机理间同时存在不确定性的变压器等电气设备的故障诊断，显得无能为力，难以满足工程应用的需要。

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