故障

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。

If as a result of body shell keycap stuck with the key causes of the "key card" failure, may be key in the cap and put a gasket between the pads can be used稍硬some plastic (such as floppy disk jacket abandoned) made, its size is equal to or slightly larger than the key body size, and location by the rod through the ammonium can open a free passage under the square hole, in accordance with its set of poles, the plug cap; use this pad chip cap with the key body to prevent stuck, you can repair button; If as a result of spring fatigue, shrapnel resistance causes large card key failure, then the Special button to open the body, a little stretching to restore flexibility to reset the spring; Remove the key precursor to the resumption of shrapnel.

若是由于键帽与键体外壳卡住的原因造成"卡键"故障，则可在键帽与键体之间放一个垫片，该垫片可用稍硬一些的塑料做成，其大小等于或略大于键体尺寸，并且在按杆通过的位置开一个可使铵杆自由通过的方孔，将其套在按杆上后，插上键帽；用此垫片阻止键帽与键体卡住，即可修复故障按键；若是由于弹簧疲劳，弹片阻力变大的原因造成卡键故障，这时可特键体打开，稍微拉伸复位弹簧使其恢复弹性；取下弹片将键体恢复。

Take the new-type of tyre-bulldozer GJT112 as example,analyzed the content of this machine fluid-system leakiness forms.

以GJT112新型轮胎式推土机为例，分析了液压系统泄漏形式，产生的主要部位及原因，内泄漏的故障机理和泄漏故障的诊断方法，最后重点论述了液压系统泄漏故障预防与控制的方法和对策。

In order to implement the fault diagnosis of Chongqing light-rail's screws,a new method of screw fault diagnosis based on Support Vector Data Description is proposed,which can found one-class classifier with normal screw samples only and doesn't need feature extracting.The method solves the difficult problem of lacking fault screw samples.

为了实现对重庆市轻轨轨道梁锚固螺杆的故障检测，提出了一种基于支持向量数据描述的锚固螺杆故障诊断方法，该方法只需要正常螺杆样本，且不需要对原始数据进行特征提取，就可以建立单值分类器，解决了缺少故障螺杆样本的难题。

In the examples, low-resistance, high -resistance and open-circuit fault of cable are simulated by using VC++7.0 software.

在仿真算例部分，本文运用VC++7.0仿真软件进行了电缆低阻故障、高阻故障、开路故障的仿真。

The circuit board fault detection and diagnosis system, which was designed for neotype weapon equipments, not only could resolve the problem that external test resources were too limited ,while there were too many quantities and types of circuit board test signals, but also could find the fault slug.

基于某新型武器装备的电路板故障检测诊断系统，不仅可解决外部测试资源有限，而电路板测试信号数量和类型过多之间的矛盾，而且可实现电路板故障定位，将故障定位到相应的元器件。

To correct detecting earthing fault line is hard to achieve on the system with insulated neutral point.The usual used fault line detection method works only on part of fault data and lacks credibility.

正确的接地故障选线是小电流接地系统存在的一大难题，通常采用的单一故障选线方法只对部分故障信息进行处理，因此选线的可靠性不高。

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 order to simplify the subsequent analysis,the obtained independent components can be divided into two parts containing dominant part and excluded part according to the concept of vector norm,and two types of statistics,I2 and SPE that reflect the system's variety and error,are respectively calculated whose confidence bounds need to be identified.

独立分量分析在过程监控、故障检测方面的应用则刚刚起步，通常是把分离得到的独立分量直接作为某种特征的反映[4]，或者对混合系数进行多次计算、对比，直接作为检测故障的指标，然后结合支持向量机方法诊断故障[5]。

In simulation, the parameter perturbation of non-linear systems, amplifier troubles and servo stagnant trouble of system was studied, As a result, this method can diagnosis fault effectively.

仿真中以非线性系统的参数摄动时和伺服系统中的阀放大器故障和伺服阀卡滞型故障进行了研究，结果表明这种方法能有效的诊断出故障。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷