查询词典 fault

A diesel engine dynamotors unit;; Intelligent Fault Diagnosis;; Expert System;; Fault Tree;; Possibility Theory

论文导师廖瑛，论文学位硕士，论文专业控制理论与控制工程论文单位湘潭大学，点击次数 3，论文页数 107页File Size9754K

"As mentioned by Bak in this debate, the SOC hypothesis has been suggested, on the one hand, on the basis of the observation of power law distributions, such as the Gutenberg-Richter law for earthquakes and the fault length distribution, and of the fractal geometry of sets of earthquake epicenters and of fault patterns, and on the other hand on the study of highly simplified models with somewhat similar scale-invariant properties."

&如同Bak在这场辩论中已提到的那样，一方面，在对动力法则分布进行观测的基础上，如用于地震和断层长度分布的Gutenberg-Richter定律，以及对震中的破裂几何学内容的观测和对断层图案的观测，以及另一方面对带有某种程度类似标度不变性质高度简单的模型的观测基础上，提出了SOC〔'自组成危险性'〕假说。&

By exampling and explaining the application of high density electrical method in Urumqi city active fault project, we exhibited the wide application prospect of high density electrical method in the fault localization.

举例说明了高密度电法在乌鲁木齐活断层勘测项目中的应用，展现高密度电法在断层定位中的广阔应用前景。

Moreover, second-winding current waveform of a current transformer is calculated under the transient current of the typical short-circuit fault by numerical method. The analysis shows that the relevant protection equipment may refuse to trip when the fault current is extra high. It will result in the maloperation of protective relays for loss of their selectivity, and cause other protective relays to operate beyond range, and extend the scope of shutdown of power supply.

在这些回路出口处发生相间直接短路等严重故障时，流过相应TA一次侧的故障电流可能达到TA额定工作电流的100倍以上，大大超过了保护用TA的10%误差容许倍数，将使TA严重饱和，从而影响相关的保护设备的动作性能，因此有必要对在这种特大电流作用下的TA的传变特性做一些探讨，以分析其对继电保护装置动作特性的影响及应采取的措施。

Contraposed the system of fault diagnosis and inspection about blower fan discussed the related theory to the equipment vibration fault diagnosis and made use of a synthetic arti...

本文针对转炉除尘风机的故障诊断与状态监测系统，依据设备振动诊断技术的相关理论，利用人工神经网络的集成，对转炉风机的故障诊断的课题进行了研究。

According to migration and accumulation model, fined that the fan body controls the pool scale and the unconformity or the fault plays the hydrocarbon migration path role and shading function, therefore, fan body directly contacted with the source rock is the exploration goal to find the pool of generation and accumulation hydrocarbon by itself, or the fan body communicated source rock with unconformity or fault is the structure-lithological pool.

根据成藏模式，发现扇体控制着油藏的规模，不整合或断层起着油气运移通道作用和遮挡作用，因此与烃源岩直接接触的扇体是寻找自生自储岩性油气藏的勘探目标，通过断层或不整合与烃源岩沟通的扇体是寻找构造—岩性油气藏的目标。

The result shows that not only it can be used to detect the characteristic signal of the rotor bar broken fault with great sensitivity but also be used to evaluate the severity of the fault.

有关方法报道很多[1，2]，利用小波分析对定子电流中所产生的谐波分量进行提取、实现实时、非接触性检测，是一种有效的手段。

Firstly, a method to estimate the rotor speed, which is based on BP neural network, is introduced in this paper. Secondly, the Park Vector approach is used to monitor and diagnose the inter-turn fault of the stator winding. Finally, this paper studies thoroughly a novel approach to detect rotor bar breaking fault, which is based on the perfect combination of the Hilbert Transform and digital filter.

具体工作如下：采用BP神经网络对异步电动机转子转速进行无速度传感器估计；对定子绕组匝间短路故障，采用派克矢量方法进行监测与诊断；对于转子断条故障，详细介绍了一种新的基于希尔伯特变换与数字滤波的在线监测方法。

Rotor bar fault is one of the ordinary faults in induction motors. The traditional method for the diagnosis of rotor bar fault is checking the (1-2s)f1 component in stator current by FFT.

转子断条是鼠笼型感应电动机常见故障之一，对定子电流进行信号处理，根据其中(1-2s)f1特征频率的分量，可以方便地进行故障的诊断。

Detailed discussion about distribution and changes of the current in every rotor bar and end ring, the relationship between the number of broken-bar and fault features in stator current after broken bar fault appearing was shown.

转子断条位置对电机影响很大，过去没有引起人们的重视，该文对此进行深入研究，分析电机转子断条位置与故障特征量之间的关系，转子断条位置与转子导条电流、转子端环电流之间的关系，并总结出其规律，指出哪些位置导条进一步断裂的可能性较大。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。