Rotating machinery applications
Dewesoft X order tracking module is the main function for measurements with varying speeds. Any input can be used: microphone, accelerometer, even the output of the torsional vibration module.
Clearly separate engine related harmon- ics from other frequencies like structural resonances. The high precision digital counters of the Dewesoft instrument provide accurate and repeatable measurements. Result are represented in 3D, color spectrogram but also in 2D view for selected order and phase extraction over RPM.
For displaying the axis movement DEWESoft offers the orbit plot.
Integration/double integration can easily be done directly in the channel configuration setup, for calculation of displacement based on accelerometer input. The output of the order tracking module can be used for displaying single orders as well as cyclic averages.
This instrument works based on classification of the measured values, with several options like rainbow, greyscale and adjustable classes. It can be applied on Time FFT as well as Order FFT.
With the high-precision digital counters of the DEWESoft instruments, based on an 102 MHz time base, rotational and torsional vibration angles and velocities (with two encoders) can also be exactly determined at high RPM speeds. Constant angle offset, uncentered mounting and sensor errors can be compensated, gearbox ratios are supported and additional filters can be applied.
Analyse machines with repetitive processes and resample the data to any other channel base (e.g. angle-domain) to calculate e.g. concentricity errors of shafts (min, max, avg...) per cycle or over all cycles.
The cepstrum calculation (also used to determine characteristics in speech analysis) helps to identify vibration signatures, such as frequencies in gearbox and bearing analysis. DEWESoft provides mirror spectrum, low and high frequency output.
AUTO & CROSS CORRELATION
For quantification of signals related to each other or to get the relevant information out of noisy data, the powerful DEWESoft mathematics provides all the necessary tools.
Similar to Matlab you can work and calculate with the array data to display the result already during measurement.
BEARING FAULT (ENVELOPE)
Easily identify the bearing fault frequencies with the help of automatic markers in the spectrum.
Defects on the cage, rolling element, outer or inner race (FT, BSF, BPFO, BPFI) and also their harmonics can be seen. Just select manufacturer and bearing type via the bearing data- base. The bearing data base can also be edited to be completed by the user.
To cancel out the vibration caused by the first order (unbalance), DEWESoft offers the Dewesoft X balancing module. It is very easy to setup, just specify tacho sensor an accelerometer(s). It acts as a sequence: First record the actual status, then add a trial mass, last step is to add the calculated correction mass at the appropriate angle. Steps can be repeated if required. Depending on the rotating part, both single-plane and dual-plane balancing is supported. All results and the raw data are stored in the datafile.