故障测试

In order to realize automatic testing and fault diagnosis for radio station , an automatic test system based on PXIbus was designed, also, the design of hardware, software and fault diagnosis were discussed in detail, and the method of classificatory testing about radio was introduced.

为了达到对通信系统电台的自动化测试和故障诊断的目的，设计了基于PXI总线的电台自动测试和故障诊断系统，详细说明了系统的硬件和软件组成以及故障诊断方法，并介绍了有关电台分级检测的方法，经验证此系统能够很好地完成电台的自动化测试与故障诊断并达到了设计要求；此系统的研制成功，充分说明了PXl总线系统在通信设备检测方面的巨大优势，为研制新一代的自动化测试系统指明了方向。

So, the more overall research on the fault testing and diagnosing is significant.

因此，对FPGA器件的故障测试和故障诊断方法进行更全面的研究具有重要意义。

Therefore, we can conclude that we can get the testing generation and an effective method of researching the fault testing generation in the sequential circuits.

结果表明此方法可实现故障的测试矢量，是一种研究时序电路故障测试产生的有效方法。

The company's technology services minister, to undertake power cable fault testing products and technological exchanges and training courses.

本公司技术服务部长年承接电力电缆故障测试和产品技术交流培训班。

The solution of technical problem in the fault testing of singlechip application circuit board was proposed, and the composing of testing system was introduced in the paper.

对单片机应用电路板的故障测试进行研究，提出解决单片机应用电路板故障测试技术难题的解决方法，介绍测试系统的组成。

With the fast expand of FPGA devices, the structure of FPGA becomes more complex, a large number of fault s is difficult to use traditional methods for testing, Therefore, the FPGA device fault testing and fault diagnosis method for a more comprehensive study is of great significance.

随着FPGA器件的迅速发展，FPGA的密度和复杂程度也越来越高，使大量的故障难以使用传统方法进行测试，因此，对FPGA器件的故障测试和故障诊断方法进行更全面的研究具有重要意义。

The level of complexity in testing the designed logic circuit and system.

对所设计的逻辑电路和系统进行故障测试的难易程度。

Finally, the experiment of detection of short circuit and open circuit of many kinds of cables are performed.

论文最后给出了对多种电缆进行短路、断路故障测试的实验的情况。

Firstly-the values of voltage on various test points under normal.states and fault states are measured;and the deviation of voltage is fuzzed for deriving the membership degree of the deviation under different fault states.Then.with the membership degree of each test points and their relevant fault categories 88 the sample for training neural network to establish non.linear function from fault feature to fault categories.

首先测得模拟电路在故障状态和正常状态时各测试节点的电压值，并对其电压偏差值模糊化，从而求得不同故障状态下各测试节点的电压偏差值所对应的隶属度；其次，以各测试节点的隶属度和所对应的故障类型作为训练神经网络的样本，来建立从故障特征到故障类型的非线性函数；最后。

Firstly, a mathematic model was constructed to deal with fault isolation. This model mainly considered the associations among fault sources and available testing of hierarchical system, the affiliation of faults with replaceable units in different levels, the prior probability of fault sources and the available testing costs. Secondly, a quasi multi-step look-ahead search algorithm was presented which employed the information gain as its heuristics. This algorithm could realize optimization of testing sequence in different isolation levels.

首先基于层次系统故障与测试之间的关联关系，以及故障与不同层级可更换单元的隶属关系，结合故障的先验概率与可用测试成本，构造了层次系统故障隔离问题的数学描述模型；然后以信息增益为启发策略，提出了一种准多步前向搜索算法，实现了不同隔离级的测试顺序优化。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。