故障的

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。

Since this phenomenon is common in the current network fault management, it is very necessary to find an effective solution for solving the above problem.

由于以上现象在当前的网络故障管理中普遍存在，因此有必要寻找一种能够有效地解决上述问题的网络故障诊断模型和方法。

With the development of research of fuzzy fault diagnosis and expert system, the dependability of the fault diagnosis for the vibration of the feed pump will be improved continuously.

随着模糊诊断方法研究和故障诊断专家系统求解策略研究的深入和发展，给水泵振动故障诊断的可靠性必将得到不断提高。

After confirming the diagnostic flow for the diagnosis of the feed pump, a spot instance is brought forward in the thesis.

论文通过对模糊故障诊断技术及模糊数学理论的分析，提出了给水泵振动模糊故障诊断的数学模型。

For the DC leakage current could not effectively evaluate the state of DC feeder cable insulation layer with cut or crack, the discharge theory and its characteristic were studied in the DC feeder cable under special condition, and the DC discharge was proposed to detect the insulation cut or crack fault in DC feeder cable.

针对泄漏电流检测直流馈出电缆绝缘破损故障效果不佳的问题，研究了直流馈出电缆破损状态下的放电机理及特征，提出采用直流放电法检测直流馈出电缆破损故障。

The M249 is gas-operated and air-cooled. It has a quick-change barrel, allowing the gunner to rapidly replace an overheated or jammed barrel. A folding bipod is attached near the front of the gun, though a M192 LGM tripod is also available. It can be fed from both linked ammunition and STANAG magazines, like those used in the M16 and M4. This allows the SAW gunner to use rifleman's magazines as an emergency source of ammunition in the event that he runs out of linked rounds. However, this will often cause malfunctions because the magazine spring has difficulty feeding rounds quickly enough to match the SAW's high cyclic rate.

M249采用气动、风冷原理，枪管可快速更换令机枪手在枪管故障或过热时无须浪费时间修理，机枪下前方装有折叠式两脚架，也可使用M192轻机枪的三脚架。M249采用弹链及STANAG弹匣双重供弹，机枪手在断链缺乏弹药等紧急情况时可向装备M16或M4步枪的步兵借用弹匣来射击，但以弹匣供弹时会因弹匣弹簧弹力太大而射速过高及可能出现故障。

I'm not sure what people do if they only have one computer or don't have decades of experience troubleshooting these kinds of annoying glitches.

我不知道是什么人做，如果他们只有一台计算机或没有几十年的经验故障排除这些种恼人的故障。

Besides, by the application of the two kinds of similar Haar wavelet transforms, typical fault signals in power systems are analyzed. It is proved that the two kinds of similar Haar wavelet transforms are very effective methods of the detection of fault signals in power systems.

此外，本文借助于这两种相似Haar小波变换，分析了电力系统几种典型的故障信号，证明了这两种相似小波变换方法对于检测电力系统故障信号是非常有效的。

In order to meet various type of vehicle service needs, the corporate invests nearly 2,000,000 Yuan purchased some domestic first-class engine malfunction diagnosis equipment such as Launch X431TOOL series decoder, Launch KES-200 engine comprehensive analyzer, the exhaust analyzer, the automobile multimeter and so on and the international top malfunction diagnosis equipment such as BOSCH KTS540 decoder, BOSCH FSA740 engine comprehensive analyzer; also purchased some chassis test and service equipment such as lifting machine, four wheel aligner, the detection line, the wheel dynamic balancer, the tire sufficient nitrogen machine and so on; as well as purchased the automobile body adjuster ,the outline repair machine, the carbon dioxide protection welding machine, the roasts tand japanning room and so on; also purchased various oil route exempt opening type cleaner and ultrasonic wave dirt clearer; The company has also purchased various vehicle necessary special-purpose removal and installation tools.

为满足各类型轿车维修需要，公司投资近200万元购置了元征X431TOOL系列解码器、元征KES-200发动机综合分析仪、尾气分析仪、汽车万用表等国内一流的发动机故障诊断设备和国际顶级发动机故障诊断设备博世KTS540解码器、博世FSA740发动机综合分析仪；购置了举升机、四轮定位仪、检测线、轮胎平衡机、轮胎充氮机等底盘检测维修设备；购置了车身矫正仪、外形修复机、二氧化碳保护焊机、烤漆房等钣金喷涂设备；购置了各类油路免拆清洗机及超声波污垢清洗机等清洗设备；公司还购置了与各车型配套的专用拆装工具。

Another method is fault location algorithm using short data window in the calculation. Because the saturation time of current-transformer lag behind the instant of fault occurrence, it is possible to determine the fault location utilizing the sampling data prior to the saturation. The simulations showed that both of the methods can solve the problem of current-transformer saturation.

方法二是短数据窗定位算法，通过大量仿真发现电流互感器的饱和要滞后于故障短路时刻，短数据窗法就是抢在互感器饱和之前，利用未饱和的有效数据来计算故障点位置。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。