查询词典 fault analysis

Aimed at the difficulty to extract the fault information of a low speed shaft in a large gearbox, wavelet analysis was used to realize the local analysis of signals in a time and frequency domain simultaneously. The signals were dissembled to a sieres of compactly supported wavelet bases non-redundantly and without leaking.

针对大型齿轮箱低速轴故障信息难以提取的问题，采用小波分析方法对故障数据进行处理以实现信号在时/频域的局域性分析，将其无冗余、无泄漏地分解到一组具有紧支撑性的小波基上。

For the limitations of single-scale modeling in traditional principal components analysis, multi-scale principal components analysis was applied to the fault monitor and diagnosis in floating production storage and off-loading system.

针对传统主元分析单尺度建模的局限性，以小波分析和主元分析理论为基础，应用多尺度主元分析方法对浮式油轮生产储油卸油系统进行故障检测与诊断系统的设计与实现。

Combining the field operation of caisson precasting ,presenfd by safety system analysis and fault tree analysis,the danger factors of caisson precasting ,and relevant safety control measures are put forward.

结合某沉箱预制厂现场作业情况，以安全系统工程分析法和故障树分析法，分析沉箱预制过程存在的危险因素，并提出安全控制措施。

Combining the field operation of caisson precasting,presenfd by safety system analysis and fault tree analysis,the danger factor s of caisson precasting,and relevant safety control measures are put forward.

结合某沉箱预制厂现场作业情况，以安全系统工程分析法和故障树分析法，分析沉箱预制过程存在的危险因素，并提出安全控制措施。

The research work in this dissertation aim to apply the advanced technique in practice, that ramifies three parts: at first, the basic study of the computer vision, especially the stereo vision, include their technical mechanisms, methods and algorithms resolves the same technical problems of endoscopy and ferrograhpy based on stereo vision. Secondly, the endoscopy of engine fault inspection based on stereovision is researched and the system faced to this application is developed, thus the problems of stereovision applied to macroscopical images such as endoscopic images are resolved in method and computation. In addition, inside scenes are reconstructed and typical damages of engine inside are analyzed. Thirdly, the investigations of system formation, methods applied and algorithms study of debris analysis based on stereovision is carried out. Thus the problems of stereovision applied in debris analysis are resolved mainly. Furthermore, the integrated method combine with 3D symbolic parameters is studied and discussed for the recognition of debris configuration in pilot.

本文的研究工作以技术应用为目标，分为三大部分：首先是对计算机视觉，特别是立体视觉技术机理、方法和算法的基本研究，主要解决了立体视觉在内窥探伤与铁谱检测中应用的技术共同点；其次是对基于立体视觉的发动机内窥探伤的技术研究和系统开发，解决了立体视觉用于内窥图像这一宏观图像的技术和算法实现问题，其中包括对内窥场景的视觉重建和对发动机内部典型损伤的分析；最后对基于立体视觉的磨粒分析技术的系统构架、实施方法和相关算法进行了研究，主要解决了立体视觉用于磨粒显微图像的技术问题，并对融合三维描述参数的磨粒形态综合识别方法进行了初步研究与探讨。

The research work in this dissertation aim to apply the advanced technique in practice, that ramifies three parts: at first, the basic study of the computer vision, especially the stereo vision, include their technical mechanisms, methods and algorithms resolves the same technical problems of endoscopy and ferrograhpy based on stereo vision. Secondly, the endoscopy of engine fault inspection based on stereovision is researched and the system faced to this application is developed, thus the problems of stereovision applied to macroscopical images such as endoscopic images are resolved in method and computation. In addition, inside scenes are reconstructed and typical damages of engine inside are analyzed. Thirdly, the investigations of system formation, methods applied and algorithms study of debris analysis based on stereovision is carried out. Thus the problems of stereovision applied in debris analysis are resolved mainly. Furthermore, the integrated method combine with 3D symbolic parameters is studied an d discussed for the recognition of debris configuration in pilot.

本文的研究工作以技术应用为目标，分为三大部分：首先是对计算机视觉，特别是立体视觉技术机理、方法和算法的基本研究，主要解决了立体视觉在内窥探伤与铁谱检测中应用的技术共同点；其次是对基于立体视觉的发动机内窥探伤的技术研究和系统开发，解决了立体视觉用于内窥图像这一宏观图像的技术和算法实现问题，其中包括对内窥场景的视觉重建和对发动机内部典型损伤的分析；最后对基于立体视觉的磨粒分析技术的系统构架、实施方法和相关算法进行了研究，主要解决了立体视觉用于磨粒显微图像的技术问题，并对融合三维描述参数的磨粒形态综合识别方法进行了初步研究与探讨。

Moreover, this paper introduces the analysis and design of automation system of the production line at length, including the spot controlling unit, the central controlling unit, hardware and software, communication connecting and electricalcontrol. Also introduces the technique analysis and controlling method design of the raw material preparation, rotating kiln system and coal powder preparation. Describes the system design in detail, such as the main control interface, the system main interface, the system flow diagram, group start and stop, equipments selecting, emergency and fault reset, alarming picture, tendency picture, speed setting, raw material feeding, feeding operation, production reporting table and so on.

接着，论文对该生产线自动控制系统进行了详细地设计分析，包括现场控制部分、中央控制部分、软硬件部分、通讯连接部分和电气控制部分；对生料制备系统、回转窑系统和煤粉制备系统进行了工艺分析和控制方法的设计；并对系统主要控制界面，系统主界面、系统流程图、组起/组停、设备选择、故障复位、故障紧停故障消音、报警画面、阀门操作、趋势画面、转速设定、生料喂料、喂煤操作、原料喂料、生产报表等做了设计介绍。

This paper will use fuzzy parameter method to record the important machine parameters. First, we can solve the degree of membership functions of fault fuzzy parameters. Then, the weight of the fuzzy membership function can be obtained by the Analysis Hierarchy Process with Matlab software. Finally, the result of synthetic fuzzy membership function of each cylinder can be used to find out the engine real faults and time relationship. In addition, such model analysis is suitable for the real ship and others sister ships maintenance programs.

本研究采用参数模糊法将主机纪录中的重要参数，利用参数故障模糊隶属度函数，得到各参数的故障模糊度，再利用层次分析法以确定各参数在故障诊断中所占的权重，最后得到主机各缸综合故障模糊隶属度，确定出主机故障与时间的关系趋势，并经实船验证本模式完全适用於同型姊妹船的维修保养计划。

Mainly, the article divides into six contents: system development background and method of exploitation, demand analysis, system analysis, system design, system implementation and conclusion. In demand analysis, has established first with the example model, and comes the detailed description through the active chart to use the example. Through the sequence chart and the VOPC chart, I completed the definition of boundary, control and data entity of the fore-platform in system analysis. The system design mainly has carried on the detailed design to kind of and the database.

在需求分析中，先建立了用例模型，通过文字和活动图来详细的描述用例，确定了前台子系统的各个功能模块；系统分析中，使用序列图和VOPC图完成了对系统运作过程中涉及的界面、控制、数据实体的定义；系统设计主要主要对类及数据库进行了详细的设计；系统实施中，对前台子系统的物理部署、实施环境进行描述，包括系统的主要界面和部分代码。

According to different types of ambiguity, five means is used to resolve the ambiguity, that is: analytic hierarchy analysis, transformation, analysis of semantic feature, semantic orientation analysis and contextual analysis.

根据不同的歧义类型，用五种方法对歧义进行化解：层次分析法，变换分析法，语义特征分析法，语义指向分析法和语境分析法。

The United Kingdom has pledged to provide technical assistance to the peacekeeping effort in Darfur, including airlifting supplies and equipment to assist the African peacekeepers.

英国承诺为达佛的維和努力提供技术帮助，包括提供非洲的維和部队空运补給和裝备。

Results: The level of ET-1mRNA in placental villus was significantly higher in pre-eclamptic women than that in control group.

结果：妊高征组患者胎盘绒毛组织ET-1 mRNA的表达较正常妊娠组明显增高。