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检验故障
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  “检验故障”译为未确定词的双语例句
     The paper introduces the theory of two kindsof the chi-square test and proposes the scheme of fault detection and isolation that is suitable to engineering based on the simulation results of the SINS/GPS/EC (Electronic Compass) integrated navigation system.
     本文还对联邦滤波器的故障检测——两种x~2检验法进行了理论研究与仿真,建立了x~2检验故障检测算法,提出了可适用于工程应用的故障检测方案。
短句来源
     This paper introduces the theory of two kinds of the chi-square test and proposes the scheme of fault detection and isolation that is suitable to engineering based on the simulation results of the SINS/GPS/BD/TAN integrated navigation system.
     本文对联邦滤波器的故障检测技术——两种γ~2检验法进行了理论研究,建立了γ~2检验故障检测算法,并用计算机仿真验证了该算法的有效性。
短句来源
     3. This article provides the method of inspecting failure by means of range and derives the formulae of calculating accuracy and ineffectiveness. This method will make calculation simple and work of the system reliable.
     3.本文提出极差检验故障方法,推导了精度与失效率公式,该方法计算简单、工作可靠;
短句来源
     At same time,this paper proposes the criterion to build testing sam ples,in order to get the assurance of fault tolerance perform ance of tested diagnosis system and have practical application potential of studied system .
     还给出了构造测试样本的理论准则 ,从而使检验故障诊断系统的容错性能具有保证和真正的实用价值。
短句来源
     To validate the proposal, an experiment was conducted, involving 5 software, 4 of which are injected with faults deliberately and the rest one is actual software in use. The results show that an average precision of 0.803 and an average recall of 0.697 are obtained.
     为了检验故障定位模型的效果,选择了5个软件进行实验,对其中4个设计并植入故障,另外1个为真实软件,实验获得了平均0.803的定准率和平均0.697的定全率.
短句来源
  相似匹配句对
     Application of K-S Test and Wavelet Analysis in Rolling Bearing Fault Diagnosis
     K-S检验在轴承故障诊断中的应用
短句来源
     Analysis of the troubles of medical test instruments
     医用检验仪器故障分析与研究
短句来源
     Inspection on Hydrogenation Reactor
     加氢反应器的检验
短句来源
     Check of the Topographic Map
     地形图的检验
短句来源
     the malfunction diagnosis of cutting processing;
     故障诊断 ;
短句来源
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  faultfinding
It addresses processes of becoming that are not centred on judgement, faultfinding or discovering essences.
      
At best, the visits provided a pleasant opportunity to exchange news; at worst, they became an unpleasant faultfinding exercise.
      
Such attacks consist of unjustified criticism, humiliating remarks, and faultfinding.
      
Topics covered range from selecting the right system to basic maintenance and faultfinding.
      
The inspection team can be aided during the faultfinding process by a checklist of queries.
      


This article covers the advantages of the repeated method and the applications of the repeated method in strap-down inertial system. The differences of this method with those described in the previous articles [1], [2] are:1. Not only the reliability of the system, but also the accuracy of the system will be improved.2. The most key components, which effect the accuracy in guidance, should be repeatedly fit in the optimum directions and those which effect the reliability should be considered to be in the orthogonal...

This article covers the advantages of the repeated method and the applications of the repeated method in strap-down inertial system. The differences of this method with those described in the previous articles [1], [2] are:1. Not only the reliability of the system, but also the accuracy of the system will be improved.2. The most key components, which effect the accuracy in guidance, should be repeatedly fit in the optimum directions and those which effect the reliability should be considered to be in the orthogonal or non-orthogonal repeated method.3. This article provides the method of inspecting failure by means of range and derives the formulae of calculating accuracy and ineffectiveness. This method will make calculation simple and work of the system reliable.4. Applying the theory mentioned above, the error in guidance will be decreased by 1/2 and the ineffectiveness can also be decreased by two orders of magnitude, if a longitudinal accelerater and a two-freedom gyro are added to the strap-down guidance device.

本文在阐述了重复技术的优点及捷联制导的重复方法(十二面体方法及非正交系方法)后,提出了自己的重复方法。该法有下列特点:1.不仅提高系统的可靠性,而且提高系统的精度;2.影响制导精度的最关键元件应在最佳安装方向上多套重复,影响可靠性的关键元件可考虑正交或非正交重复;3.本文提出极差检验故障方法,推导了精度与失效率公式,该方法计算简单、工作可靠;4.应用以上理论,捷联制导装置中增加一个纵向加速度表及一个二自由度陀螺,制导误差可降低到1/2~(1/2)倍,失效率可降低两个数量级。

The AT&T 5ESSTM switch is a time-division digital switching system designed to provide telecommunications services for an extensive range of applications: local, toll, international gateway, and operator services. The 5ESS switch system is designed to provide cost-effective, flexible and reliable mechanization and centralization of maintenance and administrative functions. This paper describes the operation, administration and maintenance (OA&M) features of the export 5ESS switch. The emphasis is on the features...

The AT&T 5ESSTM switch is a time-division digital switching system designed to provide telecommunications services for an extensive range of applications: local, toll, international gateway, and operator services. The 5ESS switch system is designed to provide cost-effective, flexible and reliable mechanization and centralization of maintenance and administrative functions. This paper describes the operation, administration and maintenance (OA&M) features of the export 5ESS switch. The emphasis is on the features that reduce training costs and result in maintenance savings over the life-cycle of the 5ESS switch.The OA&M capabilities are a fundamental part of the 5ESS switch design. They provide monitoring and control of the system, even during overload conditions. The exchange is capable of detecting errors by the use of self-checking hardware, and software which audits data throughout the exchange. Diagnostic and testing functions may be run on demand, by schedule, or executed as a result of an error threshold being exceeded. Extensive trunk and line maintenance capabilities are also integrated into the exchange. Flexibility is provided in the recording and reporting of test results and status information.OA&M capabilities are designed to evolve to support new features and services as they are introduced on the 5ESS switch. User control of OA&M functions allows flexible application of operation and maintenance strategies which can improve exchange performance and reduce costs.

AT&T 5 ESS~(TM)交换机是一种时分数字交换机,可以应用于广泛的电信业务,它包括:市话、长途,国际及话务员业务等。5 ESS交换机系统提供低廉、灵活、可靠的机械和集中化控制及管理的功能。本文介绍国际型5 ESS交换机的操作、管理和维护(简称为OA&M)各项性能,重点阐述那些能降低培训费用和节省5 ESS交换机维护开支的特性。 OA&M性能是5 ESS交换机设计中的一个基本成份。甚至在超负荷的情况下,它们仍能保持对该系统的监视和控制。此交换机具有凭借自检硬件和软件对交换机进行检验故障之能力。诊断和测试的功能可随时、定期或在故障超出域值时自动进行。5 ESS交换机具有对中继线和用户线的维护性能,整个系统的测试结果和状态能灵活地记录下来。 OA&M功能是随着5 ESS交换机的发展而新增加的性能和业务的一部分。对使用者来说,操作和维护更加灵活。这样既可改进5 ESS交换机操作性能,又能降低成本。

A real time on-line fault detection algorithm is set up and realized,which mainly employs the theory of time series analysis.A key concept for fault detection is a whiteness test on the computing residual vector over the evolution time window.A standard autocorrelation whiteness test is used,where the residuals are assumed to be white,and a 99% confidence interval threshold is adopted in the autocorrelation domain.The off-nominal test then is reduced to a thresholding technique performed on the lag terms of...

A real time on-line fault detection algorithm is set up and realized,which mainly employs the theory of time series analysis.A key concept for fault detection is a whiteness test on the computing residual vector over the evolution time window.A standard autocorrelation whiteness test is used,where the residuals are assumed to be white,and a 99% confidence interval threshold is adopted in the autocorrelation domain.The off-nominal test then is reduced to a thresholding technique performed on the lag terms of the residuals autocorrelation.Therefrom a fault detection scheme is designed,which includes two steps,the first is to declare an event for any model whenever the first ten lags of its residuals autocorrelation exceeding a 99% confidence interval,the second is to declare a fault condition if at least M individual ARMA models declared an event in N measured parameters ( M≤N ).Verification with a number of fire-test data of real engines shows that the algorithm is very effective and applicable for practical engineering.

针对液体火箭发动机主级稳态工作过程,采用时间序列分析理论,提出并实现了一种基于ARMA模型计算残差自相关函数置信区间检验的故障检测策略。经大量发动机实际热试车数据验证表明,本文所实现的故障检测算法是十分有效的。这一结果可望直接应用于工程。

 
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