助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   历史试车 的翻译结果: 查询用时:0.017秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

历史试车
相关语句
  historical test
     With the help of this model and Liquid Rocket Engine(LRE) historical test data,the linear correlation hypothesis testing of 7 turbopump vibration parameters and that of 13 traditional statistical features were performed here. Then,the turbopump fault detection sensitivity and stability of statistical features and the normality of turbopump vibration data were also analyzed.
     利用该假设检验模型和某型液体火箭发动机的历史试车数据,检验了7路涡轮泵振动参数以及13种常用统计特征量的线性相关性,并分析了统计特征量对涡轮泵故障的敏感性和稳定性,以及涡轮泵振动数据的正态性。
短句来源
     With a liquid rocket engine(LRE) historical test data,this algorithm is validated. These results show that there is only one class when the algorithm is used to healthy turbopump vibration data,and the distance between the neighboring neuron is less than 0.1;
     通过某型液体火箭发动机历史试车数据的验证,结果表明,健康涡轮泵数据利用该算法聚类时仅存在一个类别,相邻神经元距离小于0.1;
短句来源
  “历史试车”译为未确定词的双语例句
     (2) The framework and approaches of turbopump post test data analysis were presented. Using the traditional time domain features of vibration signals, the turbopump history test data were analyzed, and based on the results some conclusions were drawn.
     (2)提出了涡轮泵事后数据分析的步骤和软件总体框架,利用振动分析中常用的时域统计特征参量,对涡轮泵历史试车数据进行了统计分析,并对分析结果进行了讨论。
短句来源
     and its fault detection validity was validated with 24 historical data from LRE test and 196 data from rotor rub-impact test.
     通过24次某型液体火箭发动机历史试车数据和196次转子碰摩数据验证了IACTA故障检测的有效性。
短句来源
     Then,with the help of historical data from LRE test as well as real-time data from rotor test platform,the TP-FDS was validated.
     通过转子试验平台实时数据和液体火箭发动机历史试车数据,验证了TP-FDS。
短句来源
  相似匹配句对
     History of FIFA World Cup
     世界杯的历史
短句来源
     A History of the Organ
     管风琴的历史
短句来源
     Test Run of Crack Gas Compressor
     裂解气压缩机的试车
短句来源
     A novel commissioning approach of oxygen turbine compressor with nitrogen
     氧气透平压缩机氮气试车新方法
短句来源
     Vibration Isolation of Auto Engine Test-Bed
     发动机试车台振动控制
短句来源
查询“历史试车”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  historical test
One wishes for a new Max Weber to put their broad statements to some kind of historical test.
      
While previous studies were based on re-enactments from historical test data, the present study is the first to examine how well these adaptive methods function in a real-time testing situation.
      
All historical test reports were produced by Lakefield, now SGS Lakefield Research.
      
For distributors who filed on an historical test year, this is 2004 information.
      
Historical test results are included in appendices for traceability and completeness.
      
更多          


In order to enhance the safety of liquid rocket engine (LRE) turbopump and minimize the damage of its faults, a health monitoring system of turbopump (TP-HMS) is designed for a large LRE. After the realization of the subsystems for signal acquisition, real-time fault detection, post test data analysis and real-time database support, the function and the flow of execution are investigated and analyzed. Then, the multi-feature adaptive threshold compositive decision-making algorithm (MATA) is validated...

In order to enhance the safety of liquid rocket engine (LRE) turbopump and minimize the damage of its faults, a health monitoring system of turbopump (TP-HMS) is designed for a large LRE. After the realization of the subsystems for signal acquisition, real-time fault detection, post test data analysis and real-time database support, the function and the flow of execution are investigated and analyzed. Then, the multi-feature adaptive threshold compositive decision-making algorithm (MATA) is validated with the historical data from LRE test as well as real-time data from rotor test platform. To obtain the information of fault signals, the adaptive spectrogram is applied in the data analysis. It is shown that MATA can detect the faults in real time and give no false alarm in this case. Through the application of adaptive spectrogram, the cross-term interference is suppressed. The time frequency information is obtained accurately. Therefore, the conclusion is drawn that the TP-HMS design is suitable for the health monitoring of LRE turbopump.

为了提高液体火箭发动机涡轮泵的安全性,降低其故障带来的破坏性,设计了某型液体火箭发动机涡轮泵健康监控系统(TP HMS),工程实现了TP HMS的测试硬件子系统、实时故障检测子系统、试车后数据分析子系统和实时数据库支持子系统等,讨论和分析了TP HMS的功能和执行流程,然后利用历史试车数据与转子试验平台数据对TP HMS中的多特征参量自适应阈值综合决策算法(MATA)进行了离线和实时在线验证;利用自适应时频谱对测试数据作进一步的分析。结果表明,MATA没有发生误检测情况,并具有实时故障检测的能力;自适应时频谱能有效抑制时频交叉项的干扰,准确给出故障信号的时间和频率信息。因此,TP HMS适合于液体火箭发动机涡轮泵健康状态监控。

In order to abscind the redundant vibration parameters and statistical features, and enhance the real time capability of turbopump fault detection,the linear correlation hypothesis test model was built.With the help of this model and Liquid Rocket Engine(LRE) historical test data,the linear correlation hypothesis testing of 7 turbopump vibration parameters and that of 13 traditional statistical features were performed here.Then,the turbopump fault detection sensitivity and stability of statistical features and...

In order to abscind the redundant vibration parameters and statistical features, and enhance the real time capability of turbopump fault detection,the linear correlation hypothesis test model was built.With the help of this model and Liquid Rocket Engine(LRE) historical test data,the linear correlation hypothesis testing of 7 turbopump vibration parameters and that of 13 traditional statistical features were performed here.Then,the turbopump fault detection sensitivity and stability of statistical features and the normality of turbopump vibration data were also analyzed.The data statistic analysis results show that a majority of turbopump vibration and statistical features are evidently linear correlation;and the amplitude statis-tical features fault sensitivity is weak,but their fault stability is strong;while the dimensionless ones are just the contrary.What's more,the normal turbopump vibration data obey normal distribution;however the abnormal ones do not obey normal distribution anymore.So,3 vibration parameters and 3 statistical features,which are weak linear correlation and well reflect the faults characteristic,are selected for the LRE turbopump fault detection.

为了剔除冗余的振动参数和统计特征量,提高涡轮泵故障检测的实时能力,建立了线性相关性假设检验模型。利用该假设检验模型和某型液体火箭发动机的历史试车数据,检验了7路涡轮泵振动参数以及13种常用统计特征量的线性相关性,并分析了统计特征量对涡轮泵故障的敏感性和稳定性,以及涡轮泵振动数据的正态性。数据统计分析表明,大部分涡轮泵振动参数以及统计特征量显著线性相关,幅值统计特征量的故障敏感性弱,但稳定性强,而无量纲统计特征量的情况恰好相反,并且正常涡轮泵振动数据服从正态分布,而异常涡轮泵振动数据不再服从正态分布。据此,为涡轮泵故障检测选择了线性相关性弱,故障特征反映能力强的3路振动参数和3种统计特征量。

In order to detect the turbopump fault short of fault samples,the spectrums of turbopump vibration signals were analyzed,and the frequency band energy ratio was selected as the fault feature of those signals.After SOM competitive learning theory and U matrix description of clustering results were discussed,the frequency-band-energy-ratio-based SOM algorithm for turbopump fault detection is presented,and the selection of the best matching unit(BMU) and the adaptive upgrade of their weight vectors are also realized...

In order to detect the turbopump fault short of fault samples,the spectrums of turbopump vibration signals were analyzed,and the frequency band energy ratio was selected as the fault feature of those signals.After SOM competitive learning theory and U matrix description of clustering results were discussed,the frequency-band-energy-ratio-based SOM algorithm for turbopump fault detection is presented,and the selection of the best matching unit(BMU) and the adaptive upgrade of their weight vectors are also realized in this algorithm.With a liquid rocket engine(LRE) historical test data,this algorithm is validated.These results show that there is only one class when the algorithm is used to healthy turbopump vibration data,and the distance between the neighboring neuron is less than 0.1;while there are two or more classes when the algorithm is used for faulty turbopump vibration data,and the distance between the neighboring neuron is greater than 0.1.Therefore the algorithm can effectively detect the turbopump fault.

为了解决缺少故障样本情况下的涡轮泵健康状态判别问题,分析了涡轮泵振动信号的频谱,提取了频段能量比作为其故障检测特征,并讨论了自组织映射的竞争学习原理及聚类结果的U-矩阵表示,提出了一种基于频段能量比的自组织映射故障检测算法,并实现了该算法最佳匹配神经元的选择和权重向量的自适应更新。通过某型液体火箭发动机历史试车数据的验证,结果表明,健康涡轮泵数据利用该算法聚类时仅存在一个类别,相邻神经元距离小于0.1;反之,故障涡轮泵数据利用该算法聚类时明显存在两个或多个类别,且相邻神经元的最大距离大于0.1。因此,基于频段能量比的SOM算法能有效地判别涡轮泵的健康状况。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关历史试车的内容
在知识搜索中查有关历史试车的内容
在数字搜索中查有关历史试车的内容
在概念知识元中查有关历史试车的内容
在学术趋势中查有关历史试车的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社