故障诊断

By studying and analyzing the various Neural Network and intelligent fault diagnosis, associating the difficulty which is to measure the interior signal of cycloconverter, the thesis puts forward the cycloconverter fault diagnosis which bases on Neural Network and takes cycloconverter input voltage and output current as the input of NN. According to the self-learning and non-linearity of NN, it can confirm the position of SCR fault.

通过对国内外多种神经网络和智能故障诊断技术的分析比较，并考虑到直接检测变频器内部有关信息的难度，本文提出并研究了基于神经网络的变频器故障诊断技术，以变频器输入/输出有关电量特征值作为神经网络的输入，通过神经网络的自学习方式，对变频器内部晶闸管故障进行定位。

This branch explores principal theory problem involved by knowledge-based diagnosis solution including concept system, diagnosis knowledge process, diagnosis system structure and realization.

KBSM_Diag半导体存储器故障诊断系统》采用了基于知识的信息处理方法，使用了多种深度的诊断知识，可以对存储器的故障判断其故障类型，并可对其进行定位。

In order to real time diagnose the failures of liquid rocket propulsion systems, a real time fault diagnosis approach using mechanism model and SOM neural networks is put forward.

为了解决液体火箭推进系统实时故障诊断的问题，提出了一种应用故障机理模型和SOM(Self-organizingMapping)神经网络的实时故障诊断方法。

Based on adequate survey to faults of sodium pump for The China Experiment Fast Reactor, in order that the advanced diagnosis methods are used in the sodium pump which is under fabrication, different methods of fault diagnosis system of sodium pump are designed and programmed; and the principal component analysis is used to fault diagnosis system of main coolant pump in a nuclear power station. The feasibility of fault diagnosis systems developed have been proved by simulation results.

本课题对中国实验快堆钠泵的故障进行了研究，把先进的珍断方法应用到正在制造中的钠泵上，设计和开发了不同方法的钠泵的故障诊断系统；同时也应用主元分析方法，建立了某核电厂的主冷却剂泵的故障诊断系统，仿真实验证明了以上三个系统的可行性。

This paper regards the copper electrolyze anode product line under electricity-hydraulic controlling as its researching object and studies the technology on hydraulic malfunction diagnosis thoroughly, it also analyzes integrate the methods of malfunction diagnosis and the malfunction forms of hydraulic components. Basing on this knowledge, this paper designs a process surveillance system for hydraulic pump of anode product line.

本文以电液控制铜电解阳极生产线为研究对象，具体到生产线液压系统的动力来源——液压泵，对液压故障诊断技术进行了较为深入的研究，对故障诊断的方法、液压泵的故障形式进行了综合分析，在此基础上，设计了阳极生产线生产过程中液压泵的监视系统。

The system can not only monitor and diagnose trouble on line about these sets running state, but also provide the basic state and the ability of maintenance situation message, it conjoins the vibration data and technical parameter and present regular monitor message, it realizes the regular assessment in common running condition of the sets and the comprehensive trouble diagnosis analysis in unusual running condition, it provides important foundation for maintenance and the sets trouble found earlier.

系统不仅可以对这些机组的运行状态进行在线监测和故障诊断，而且还应提供机组基本状况及维修情况信息采集功能，将振动数据、工艺参数及现有的人工定期监测信息结合起来，实现机组正常状态的定期评估和机组异常状态下的综合故障诊断分析，为机组故障的早期发现和维修决策提供重要依据。

In this paper, Frequent fault diagnosis of the reducer are generalized through a great deal fault-cases of reducer were collected, and the fault mechanism and the vibration characteristics of the pivotal parts of gear and bearing are introduced in detail.

本文首先通过对减速机故障的大量调查及信息搜集，对减速机故障诊断中出现的主要问题进行了详尽的分析，特别对减速机易出现故障的关键部件轴承和齿轮的诊断机理进行了研究。

This paper studies self-adapting fault diagnosis means which has fault diagnosis ability as well as serial learning function for fault samples.

研究了既具有故障诊断能力又具有对故障样本的连续学习功能的自适应故障诊断方法。

Based on the analysis of characteristics of two classes of technical process fault and defects of two familiar fault detection and diagnosis methods , this paper introduced an early fault detection and diagnosis method for technical process.

在分析了生产过程两类故障的特点和常规故障诊断方法的缺陷的基础上，提出了生产过程早期故障检测与诊断方法。

ABSTRACT :Based on the analysis of characteristics of two classes of technical process fault and defects of two familiar fault detection and diagnosis methods , this paper introduced an early fault detection and diagnosis method for technical process.

在分析了生产过程两类故障的特点和常规故障诊断方法的缺陷的基础上，提出了生产过程早期故障检测与诊断方法。

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