查询词典 fault analysis

Based on the transition propagation analysis of the basic unit of full adder, a kind of single input change BIST sequences is generated which has been designated to be more effective than multiple input change sequences when highly robust delay fault coverage is targeted in a series of previous theoretical and experimental results.

已有的理论和实践表明采用单跳变测试序列比多跳变序列具有更高的测试鲁棒性。

The principle of wavelet analysis and its application to large gearbox fault detection are introduced in the paper.

介绍了小波分析的原理及在大型齿轮箱故障诊断中的应用。

Based on systematic structural interpretation with 3D seismic data and analysis on regional geology and drilling data, the fault system and tectonic style of the Yitong Graben are studied.

通过对三维地震资料进行系统的构造解析，结合区域地质和钻井资料的分析表明，伊通地堑的断层系统在平面上主要由近东西向的张性正断层和北东走向的张剪性断层组成，反映盆地具右旋走滑的应力体制；断层在演化序列上分为4个类型，与盆地的形成和演化之间存在良好的对应关系。

Therefore, based on the seismic data of Inline 146 and Inline 166 in Jianghan Oilfield, conventional analysis is made with GeoDepth software. The result shows that compared with post-stack rime migration, pre-stack depth migration profile has many advantages, including better fault imaging, accurate migration horning and better effect of complex structural imaging.

因此，针对江汉油田的Inlind146、Inline166的地震资料，经GeoDepth软件的常规分析处理，其结果表明，叠前深度偏移剖面较叠后时间偏移有许多优点：断层成像效果好、偏移归位准确、复杂构造成像效果好等。

The fuzzy theory as the communication means for studying the indeterminacy can offset the lack of fault tree analysis.

作为研究不确定信息手段的模糊理论可以弥补故障树分析和评估中的不足。

It is studied the application of independent component analysis and support vector machine to fault diagnosis of induction motor.

研究了一种结合独立成分分析和支持向量机的方法在交流电机故障诊断中的应用。

This approach is a combination of signal analysis and mathematical model .By the denoising function of wavelet and the learning itself function of neural network , the input and output nonlinear dynamic characteristic of system is obtained . The output prediction error, generated from the real output and wavelet neural networks estimated output, is used as a residual error to execute logical judge. and this approach can improve the speed and accuracy rate of fault detection.

它是一种把信号分析和数学模型相结合的故障检测方法，通过小波对信号的去噪和神经网络的自学习功能，来获取系统输入输出的非线性动力学特性，进而实时计算出残差并进行逻辑判决，可提高故障检测的速度和准确率。

The faults of LW11-220 breakers were discovered through incorrect signaling of high-frequency protection, analysis of fault oscillograph and characteristic test of the breakers, and the discovery process is of instructiveness.

其中LW11-220断路器的故障是通过高频保护的误发信号和分析故障录波图以及断路器特性试验时发现的，发现过程具有启发性。

Aimed at the characteristic of multiple types of faults possibly happened in nuclear power plant, large scale of training sample, and requirement of quick and accurate diagnosing, after the analysis of large sample number generated by large fault type exceeds limitation of 64K paragraph in DOS and large number of local minmum in error surface, measurements of same format of data file, Win95/NT operating system platform, resetting weight learning rate, dynamic training set in quick learning algorithm and improvement on quick learning algorithm using homotopy method which can avoid local minmum points in error surface have been adopted to ensure quickly and effective process of the course of neural network's training and testing.

针对核动力装置可能发生的故障种类多，训练样本规模大，故障诊断需要快速准确的特点等，分析了样本多和故障种类多产生的训练样本量超出DOS段大小和网络误差曲面上局部极小值多的情况，采取了使用相同格式数据文件、Win95/NT操作系统平台，对快速学习算法采用重置神经网络权值学习率和动态训练集、并采用能够有效克服网络误差曲面上局部极小点的同伦方法对学习算法进行改进等措施保证神经网络训练测试过程的快速、有效地进行；针对装置发生的故障须快速、准确诊断的需要，分析了故障的产生对装置参数变化的影响及操纵员对故障诊断的基础，在核动力装置发生故障时参数曲线的变化量与正常运行时参数曲线的变化量存在明显差异的基础上，提出采用参数曲线的变化量作为神经网络的输入，并围绕参数变化量的方法采用二次曲线拟合滤波求变化量和阈值技术来保证神经网络得到精确的装置参数变化量，从而得到准确的诊断结果。

In the last lew years of the seventies, the fault tree of the noncoherent system was applied in the reliability analysis of complex systems.

七十年代末期，非相干系统失效树已开始应用于复杂系统的可靠性分析。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。