1) Vector spectrum
全矢谱
1.
The clew of vector spectrum is introduced,the theory relationship between the vector spectrum and the signals are deduced,and they are applied to the actual fault diagnosis systems.
介绍了全矢谱分析技术的思路,研究了全矢谱分析技术与旋转机械回转信号之间的理论关系,导出了全矢谱分析基于复合信号的理论计算公式及简洁数值算法,并将其应用于实际故障诊断中,且对全矢谱理论图谱多方面研究,提出新的面积图谱表达法。
2.
Facing the shortcomings of signal processing with a single channel,the paper proposes combining vector spectrum with the short time Fourier transform and establishing the concept of short-time vector power spectrum,whose calculation formulas were derived and whose spectral representation was expounded.
根据单通道信号处理的不足,本文提出把全矢谱技术与短时傅里叶变换相结合,建立矢量信号的短时矢功率谱概念,导出其计算公式,阐述其图谱表达,并将其应用于实际故障诊断系统中。
3.
The signal can be decomposed by wavelet and the needed signals are reconstructed,the corresponding reconstructed signals of two channels are fused by vector spectrum technology,finally the fusion data is used to diagnose.
用小波分析把信号分解到不同的频带,然后把双通道的对应频带的信号用全矢谱技术进行融合,根据融合后的数据进行故障诊断。
2) full vector spectrum
全矢谱
1.
Angular dimension of the initial phase in the full vector spectrum analysis theory was derived,and the space mode shapes of two and multiple sectional rotors were drawn by the initial phase.
研究了旋转机械故障诊断中转子截面相互垂直两个同频信号的相位差信息,揭示了相互垂直两个信号的不同相位差对应不同的合成运动轨迹图形,推导出全矢谱分析理论中初相位的角度大小,并由初相位绘制出双截面、多截面转子的空间振形,最后通过实例将全矢谱理论结合转子空间振形和初始相位差信息应用到旋转机械不平衡故障分类中。
2.
Full vector spectrum(FVS)was expanded to multi-sections.
针对目前全矢谱技术存在的缺点,把全矢谱技术延伸到多个截面。
3.
Combining the advantages of the full vector spectrum and kernel principle component analysis (KPCA) , a new fault diagnosis method for rotating machineery is proposed.
结合全矢谱和核函数主元分析的各自优点,提出了一种基于全矢谱核函数主元分析的旋转机械故障诊断新方法。
3) vector-spectrum
全矢谱
1.
The functions of the system, the structure of the database, the diagnosis technology based on vector-spectrum and fuzzy neural network and the applications in the management for turbines of enterprise are put forward.
介绍了系统的功能、数据库结构的设计、全矢谱和模糊神经网络诊断技术,以及在汽轮机状态监测和故障诊断中的应用。
2.
Two single pieces of signal is compounded to one piece of vector signal by the vector-spectrum theory,and the theory could reflect the real vibration of a rotor in certain section.
全矢谱理论将2个单源信号合成复矢量信号来处理转子信息,反映转子在某截面内的真实振动情况。
3.
The Vector-spectrum is a joint name of vector spectrum and its patulous analysis methods, they fuse the double channels information and remain the meanings of corresponding traditional methods.
全矢谱分析技术是矢量谱分析及其一系列扩展分析方法的统称，它在融合了双通道数据信息的同时，又保留了相应传统谱分析的物理意义。
4) Vector-dynamic spectrum
全矢力谱
5) Transfer spectrum
全矢传递图谱
6) vector spectrum
矢谱
1.
Fault diagnosis on rotary machinery based on vector spectrum and rough set theory;
基于矢谱和粗糙集理论的旋转机械故障诊断
2.
Based on the theory of vector spectrum, a new analysis method, vector power spectrum, aimed to signals of double channels, is proposed.
以矢谱分析为基础,提出了一种针对双通道振动信号的分析方法———矢功率谱分析。
3.
From the view of rotor dynamics,when the motion of the disk is only considered,the relations between parameters of vector spectrum and of rotor dynamics are derived.
针对矢谱分析技术在转子振动分析应用中的不足,从转子系统动力学角度,在仅考虑圆盘运动的情况下,推导出了矢谱参数与系统动力学参数之间的关系式,从理论上证明了在转速恒定的前提下,振矢角及振矢比仅与系统的刚度系数和阻尼系数有关,该研究结果为应用矢谱分析技术进行转子系统振动分析以及系统参数辨识提供了一定的理论依据。
补充资料：《佩文斋广群芳谱·药谱》
《佩文斋广群芳谱·药谱》 《佩文斋广群芳谱·药谱》 药学著作。又名《广群芳谱·药谱》。八卷。清·刘灏著。刊于1708年。本书为《佩文斋广群芳谱》卷九十三-一百，共收药物720余种，系在《二如亭群芳谱·药谱》的基础上增补而成。每种药物标记的“原”字下，均为《群芳谱》原文，“增”字下，为新增加的内容，特别是新增的“汇考”及“集藻”二项，补充各种文史资料尤为丰富。此外还新增补了一些新药。但却删去了原书中种植、修治、服食、疗治等内容。现存三种清刻本，及商务印局馆铅印本。
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