1) diameter analysis
径阶分析
2) analysis of sleep staging
分阶分析
3) Order analysis
阶次分析
1.
The paper analyzes the disadvantage of utilizing Fourier analysis to study the rotary machinery vibration signal,compares it with order analysis and represents the superiority,utilizes the virtual instrument LabVIEW to analyze the rotary machinery vibration signal and certifies it through example.
分析了将传统的Fourier分析应用于旋转机械振动信号分析存在的不足,并与阶次分析技术进行比较。
2.
In this paper, a cut-and-try way is braught forward to diagnosetransmission faults on transmission performance test-bed with thesetheories: order analysis and expert system.
本文是应用阶次分析及专家系统理论在变速器性能试验台上做变速器故障诊断的一次尝试。
3.
At the high speed, the key parts of milling machine appeared the vibration abnormal phenomenal, order analysis was done to the transmission system of the machine for this problem, proposed the work speed that the force vibration was corresponding to the first natural frequency, should be avoided when the machine works.
铣床在转速较高的条件工作时,其关键件摆角铣头出现明显的振动异常现象,就此对摆角铣头传动系统进行了阶次分析,发现引起振动异常的原因是传动系统中通过齿轮轴连接的两齿轮发生调至现象所引起的强迫振动,连接轴存在严重的不平衡。
4) Order analysis
阶比分析
1.
Order Analysis of Internal Combustion Engine Signal Based on Instantaneous Frequency Estimation;
基于瞬时频率估计的内燃机信号阶比分析
2.
On the other hand, by utilizing Instantaneous Frequency Estimation theory of Time-Frequency analysis technique, order analysis functions were put forward and implemented, such as order spectrum, order spectrum matrix, order trackin.
该仪器具有先进的时频分析功能,另外,运用时频分析技术中的瞬时频率理论,提出并实现了基于峰值搜索的瞬时频率估计的阶比谱、阶比谱阵、阶比跟踪、阶比跟踪滤波、阶比分量提取等阶比分析功能。
3.
This system with functions of 24-channel data acquisition,uniform angle resampling,order analysis and characteristics calculation was implemented by utilizing NI toolkits such as resampling toolkit and fixed-point math library.
利用NI定点运算、重采样等工具包,实现了24通道数据同步采集、数据实时等角度重采样、阶比分析、多特征值实时计算等功能。
5) second-order analysis
二阶分析
1.
This paper describes the part for second-order analysis provid.
本文详述了这一规范在细长框架使用二阶分析设计方面的特点,设计中不需要对弯曲屈曲假定计算长度。
2.
An analysis of steel frame structures is performed by use of the first-order analysis, the second-order analysis and the approximate second-order analysis recommended in the revised edition of "Chinese Standard for Steel Structure Design (GBJ17-88)".
对钢框架结构进行了一阶分析、二阶分析以及按《钢结构设计规范》(GBJ17— 88)修订稿推荐的近似二阶分析 ,通过对不同分析方法的计算对比 ,得出了钢框架结构分析考虑二阶效应的某些一般性结论 。
3.
A continuous parallel model is taken as the computational model for the second-order analysis of tall frame -shear wall structures with varied sections, considering the floor slab deformation by use of the piecewise technique.
对考虑楼板变形的变截面框－剪结构的二阶分析问题建立了一个分段连续化的串并联模型，导出其二阶分析的微分方程组，用常微分方程求解器求解。
6) order tracking analysis
阶次分析
1.
This new method combined order tracking analysis with time domain average technique.
针对齿轮箱升速过程中振动信号非平稳的特点,将常规的阶次分析与时域平均技术相结合,提出了基于阶次跟踪和角域平均的齿轮箱故障诊断方法。
2.
This new method combines order tracking analysis with the cepstrum analysis technique.
将常规的阶次分析与倒谱分析技术相结合,提出了阶次倒谱分析的齿轮箱故障诊断方法。
补充资料：二阶变分
二阶变分
second variation
二”套蕊穿黑磊票暴麟篇粼纂架的变分(variation of a ftmctional)，G狱eaux变分(伪teauxvariation))，推广了多元函数的二阶导数的概念.它用于变分法.按一般定义，定义在赋范空间X上泛函f(x)在点x。的二阶变分是 d2 占‘f(“。，”)一~方f(x。+亡h)}:二。·如果一阶变分是零，则二阶变分的非负性是f(x)在x〔、有局部极小值的必要条件，而严格正性 占’f(x。，h))“l}入}1’，“>o是充分条件(在一定的假设下). 在经典变分法的最简单(向量)问题中，在C’类向量函数类上考虑的具有固定边界值x(t。)=x。，x(r，)=义，的泛函 之.z(*)一J:(。，、，*)、:;::【。。，::，xR·xR一R、 ‘o的二阶变分有形式 仁. 。2，(、。，、)一丁(<，(:)、(。)，入(。)>+(·) r幻+2
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条