Order Tracking Analysis. Precise Vibration Analysis for Rotating Machines
Perform an order tracking analysis for speed-dependent vibrations quickly and easily: Analyze the vibrations or noises of rotating machines. The frequencies in the spectrum are displayed as orders in relation to the respective speed.
With the method used in FlexPro, signals sampled over time are first transformed into the revolution range (revolution-synchronous resampling). Using FFT spectral analysis or bandpass filtering in the revolution domain, FlexPro then effectively calculates order spectra and order curves. Run-up analyses, order analyses at constant speed and order analyses with varying speed are supported. The speed can also be specified as a pulse signal with a fixed number of pulses per revolution. All implemented methods are flexible and robust against noise in the speed signal.
Performance Features
Order Spectra
Analyze the change of orders over time and identify orders directly in the order spectrum. This is a short-time FFT of the rotationally synchronously sampled signal. The order resolution is arbitrarily adjustable, various FFT spectra can be selected. Order, rotational speed or time can be freely assigned to the X and Z components of the result.
Order Cuts
Order cuts: Extract individual order courses over time, speed, revolution or frequency from an order spectrum. FlexPro also allows you to bundle orders into order bands to calculate RMS order curves.
Display your results dynamically as a list or signal series in 2D and 3D graphs and evaluate them over a freely selectable, discrete speed range. The orders to be extracted can be specified or obtained from an external data set.
Average RMS Order Tracking
Calculate the average of RMS order spectra or RMS order cuts to determine the spectral content of individual orders in the vibration signal. Suitable method for order analysis at constant speed.
Order Filter
Use bandpass filters in the revolution domain to filter orders and thus calculate order curves with the original (time) sampling. You can elegantly calculate the sum and the RMS overall level curve of selected orders. Possible bandpass filters are IIR bandpass and peak filters. You can output the results over time, speed or revolution.
Order Analysis Cursor
Visually analyze or extract orders and resonances from speed-frequency-spectra or order spectra contour plots.
Harmonic Filter
Extract or remove harmonic components of a selected order from time signals.
Revolution Synchronous Sampling
Perform revolution synchronous sampling independently to allow for individual FFT spectral analysis or IIR bandpass filtering in the revolution domain.
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