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VibraQuest -> Dynamic Signal
Analysis
Projects frequently involve massive amounts of data that
must be examined in considerable detail in order to reach a conclusion.
VibraQuest provides the necessary tools for information extraction
and data interpretation. The comprehensive analysis panel gives you
total freedom and convenience in parameter selection, cursor operation,
and data manipulation. You can select any channel or data block to
feed into the desired function. Multiple plots or graphs can be used
to compare between different files, channels, or data blocks. |
Features
- Time domain analysis
- Spectral analysis functions:
- Amplitude/phase spectrum
- Windowing: Hanning, Hamming, Flat Top, Blackman-Harris,
Kaiser, Dolph-Chebyshev, Gaussian, etc.
- Auto power spectrum, Cross
power spectrum
- Amplitude/power spectral density
- Frequency
response,Impulse response, Coherence
- Octave analysis, frequency weighting
- Averaging modes: RMS, vector, peak hold
- Weighting modes: linear, exponential
- Ultra-high frequency resolution of 102.4 k spectral
lines
- Cursor modes: main, secondary, delta, harmonics, sideband
- True Peak estimation
- Comprehensive statistical analysis
- Mean, RMS, Standard deviation, Variance, Kurtosis,
Median, Mode, Skewness
- Covariance, Correlation, MSE
- Data presentation: Bode, Nyquist, polar, orbit, waterfall plots
- File comparison, channel comparison
- Analyze data in 1/2/4/8 graphs
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True Peak Estimation
The conventional digital signal processing is based on equally spaced
spectral bins. A representation of actual signal is prone to errors.
The errors
can distort both the frequency and time domain data. In machinery analysis
or modal testing, it is often required to estimate true spectral content
of the signal. It is virtually impossible to sample to exactly represent
the frequencies present in a real signal. We have developed a proprietary
algorithm to determine exact amplitude and frequency of the signals.
This procedure enables you to perform more accurate fault diagnosis
and natural
frequency estimation. |
Cursors
VibraQuest provides a variety of cursors for in-depth
data analysis. Available cursor modes include main, secondary, Delta,
harmonic, and sideband.
You can apply a true peak estimation algorithm to any of the spectral
peaks. This is especially useful for harmonics and sideband analysis.
In VibraQuest, you can display over thirty harmonic and sideband cursors.
The values of the frequencies and amplitude are displayed in a table
which can be exported to MS Excel for report generation. |
The comprehensive
analysis panel gives the user total freedom to perform FFT-based
analysis.
The user can choose multiple channels
and multiple data blocks. The data will be processed through
the selected function and plotted in a central graph. User
can select the cursor mode and move the cursor, and the
program will identify the harmonics or sideband peaks with
true peak finding method.
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A 3-D waterfall plot of acceleration data acquired on SpectraQuest MFSLite
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Polar plot showing rotor resonances
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Statistics for selected data file
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