Description: 这两个是通信中基本仿真程序，一个是单边带调幅和双边带调幅的对比，另一是使用希尔伯特滤波器进行的单边带振幅调制解调．-these are two basic communication simulation program, is a single-sideband AM band and bilateral AM contrast, Another is the use of Hilbert's single sideband filter amplitude modulation and demodulation. Platform: |
Size: 1023 |
Author:陆江 |
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Description: 这两个是通信中基本仿真程序，一个是单边带调幅和双边带调幅的对比，另一是使用希尔伯特滤波器进行的单边带振幅调制解调．-these are two basic communication simulation program, is a single-sideband AM band and bilateral AM contrast, Another is the use of Hilbert's single sideband filter amplitude modulation and demodulation. Platform: |
Size: 1024 |
Author:陆江 |
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Description: The Hilbert Transform is an important component in communication systems, e.g. for single sideband modulation/demodulation, amplitude and phase detection, etc. It can be formulated as filtering operation which makes it possible to approximate the Hilbert Transform with a digital filter. Due to the non-causal and infinite impulse response of that filter, it is not that easy to get a good approximation with low hardware resource usage. Therefore, different filters with different complexities have been implemented.
The detailed discussion can be found in "Digital Hilbert Transformers or FPGA-based Phase-Locked Loops" (http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4629940).
The design is fully pipelined for maximum throughput. Platform: |
Size: 1239040 |
Author:Arun |
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Description: 程序为常规AM，DSB，SSB调幅信号的调制与解调的MATLAB程序，其中单边带调制用两种方法进行调制：一种为频谱直接变换，另一种为希尔伯特变换实现-MATLAB for norm AM,DSB and SSB modulation and demodulation,besides,modulation for SSB,has tow ways:frequency spectrum transform and hilbert transform Platform: |
Size: 33792 |
Author:zhouni |
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Description: 一组信号进行小波分解后以及希尔伯特解调，快夫妇立叶变换-A set of wavelet signal decomposition and Hilbert demodulation and fast Fourier transform couples Platform: |
Size: 4096 |
Author:caizigang |
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Description: hilbert 的VB6.0的代码，利用matlab验证过了，可以用于包络解调分析-hilbert the VB6.0 code, the use of matlab verified, and can be used for envelope demodulation Platform: |
Size: 500736 |
Author:zhangyubin |
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Description: 通过在实车上模拟坦克变速箱工作档位齿轮故障,利用Hilbert变换幅值解调法提取箱
体振动信号的包络,并对包络信号进行抽取和低频段频谱细化,提出了一种基于包络细化谱分析的
坦克变速箱工作档位齿轮故障诊断方法。
- A fault diagnosis method of working position gear in tank gear-box was put forward based on
simulating the fault of working position gear in actual tank gear-box, extracting the envelope of vibra-
tion signal by Hilbert transformation amplitude demodulation, and zooming low frequency band to the
envelope signal.
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Author:whb |
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Description: 提出一种基于旋转机械同源数据融合的全矢Hilbert解调分析方法。将全矢谱技术融于希尔伯特解调之中,
从理论分析该方法的可行性,并将其应用于高速旋转的齿轮故障诊断中,进一步证实矢Hilbert方法的有效性。
-Vector spectrumHilbert demodulation analysis method based on the same source data fusion of rotarymachinerywas put
forward. The algorithms of vector spectrumtechnologywas explained. Anewmethodwas presentedwhen the vector spectrumwas applied
into the Hilbert demodulation. The method was named vector-Hilbert demodulation. Not only through theoretical analysis does the article
prove the feasibility of the vector-Hilbert demodulation method, but also through being used in the fault diagnosis of high speed rotary
gears confirm the effectiveness of this method.
Platform: |
Size: 37888 |
Author:whb |
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Description: 平移不变量小波去噪方法是对Donoho阈值法的改进,该方法不仅能有效地抑制伪吉布斯现象,而且
能减小原始信号和估计信号之间的均方根误差,提高信噪比。将这种方法用于变速箱齿轮故障信号的去噪处理,同
时与阈值法去噪的结果进行比较。结果表明,该方法可以有效地去除强噪声的干扰,提取齿轮故障特征信息,具有
很好的工程实用性。
-Vector spectrumHilbert demodulation analysis method based on the same source data fusion of rotarymachinerywas put
forward. The algorithms of vector spectrumtechnologywas explained. Anewmethodwas presentedwhen the vector spectrumwas applied
into the Hilbert demodulation. The method was named vector-Hilbert demodulation. Not only through theoretical analysis does the article
prove the feasibility of the vector-Hilbert demodulation method, but also through being used in the fault diagnosis of high speed rotary
gears confirm the effectiveness of this method.
Platform: |
Size: 40960 |
Author:whb |
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Description: The Hilbert–Huang method is presented with modifications,
for time-frequency analysis of distorted power quality signals.
The empirical mode decomposition (EMD) is enhanced with
masking signals based on fast Fourier transform (FFT), for separating
frequencies that lie within an octave. Further, the instantaneous
frequency and amplitude of the constituent modes obtained
by Hilbert spectral analysis are improved by demodulation. The
method shows promising time-frequency-magnitude localization
capabilities for distorted power quality signals. The performance
of the new technique is compared with that of another multiresolution
analysis tool, the S-transform—a phase corrected wavelet
transform. Analysis on actual measurements of transformer inrush
current from an existing laboratory setup is used to demonstrate
this technique. Platform: |
Size: 835584 |
Author:imed |
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Description: 本文研究了齿轮振动信号调制与解调的过程与机理。并根据希尔伯特变换理论,提出了一种早期诊断齿轮故障的新方法-In this paper, a gear vibration signal modulation and demodulation process and mechanism. Hilbert transform theory, proposed an early diagnosis of gear failure method Platform: |
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Author:张力 |
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Description: 阐述Hilbert变换的定义及解调原理。工程应用的结果表明, 利用Hilbert技术从复杂的
振动信号中解调故障的调制信息, 进而判断出故障齿轮的部位, 是一种可靠的故障诊断方法-On the definition of the Hilbert transform demodulation principle. The engineering application results show that the Hilbert technical failure of modulation information from complex vibration signal demodulation, and then identify the parts of the fault gear, is a reliable method of fault diagnosis Platform: |
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Author:张力 |
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Description: 齿轮发生裂纹故障时其振动信号会产生调制现象,包括幅值调制和频率(相位)调制两部分。目前调幅信号的解调分析已经比较成熟,但对于调频信号的解调方法研究还不够完善。全面系统介绍了近年来处理调频信号
中最常用的希尔伯特相位解调和循环平稳解调两种方法-Gear crack fault occurs when the vibration signal will produce modulation phenomenon, including the two parts of the modulation of the amplitude modulation and frequency (phase). AM signal demodulation analysis is relatively mature, but still not perfect FM signal demodulation method. The comprehensive system introduced in recent years dealing with the FM signal most common Hilbert phase demodulation and cyclostationary two methods Platform: |
Size: 1217536 |
Author:张力 |
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Description: 基于FIR设计了一个希尔伯特变换滤波器，并把该滤波器用于音频信号的解调。-FIR-based design of a Hilbert transform filter, and to the filter for audio signal demodulation. Platform: |
Size: 1024 |
Author:虫之娃 |
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Description: 此编程是对于平方解调和希尔伯特解调分析的展示，希望能够帮到大家(This programming is for the square demodulation and Hilbert demodulation analysis of the show, hoping to help everyone) Platform: |
Size: 1024 |
Author:James332211
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Description: 对频率调制信号实现希尔伯特解调和广义检波滤波解调，得到调制频率成分(Hilbert demodulation of the frequency modulation signal and demodulation of the generalized detection filter to obtain the modulation frequency components) Platform: |
Size: 1024 |
Author:Dreamttt
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