DSA

Dynamic Signal Analysis

Envelope detection math - difference between peak detection and filtering
Filtering uses filter procedure for envelope calculation. Filtering is a standard procedure for calculating envelope used also in other implementations. Pe...
Wed, 23 May, 2018 at 10:58 AM
CAN channel for RPM channel in order tracking mathematic
To use the CAN channel in order tracking mathematic it needs to be upsampled to a synchronous channel with the steps below: 1. Go to formula and select ...
Wed, 23 May, 2018 at 9:08 AM
Importing CAD file to FRF geometry
DEWESoft geometry editor can only import the UNV/UFF file format. For the workaround, it is possible to use the GMSH editor (http://gmsh.info/) to conve...
Fri, 18 Oct, 2019 at 9:16 AM
Counters with very slow signals
The minimum frequency that can be measured with a tacho sensor on the counter inpt is 5 Hz (300RPM). This is because we have a maximum of 200ms buffer to w...
Thu, 30 May, 2019 at 4:09 AM
How to calculate the time delay between two signals using Correlation math
For the example, we have generated two signals (sine waves) with the frequency of 100 Hz and a phase shift of 90°. If you zoom in the signal, you can see t...
Wed, 23 May, 2018 at 9:38 AM
Calculating modal compliance
There is no direct method to calculate compliance, but this can be done with some mathematics. The second test is with a double integration of acce...
Wed, 23 May, 2018 at 9:45 AM
FFT analyser - Overall RMS (block history and overall)
If the Block history is selected, the RMS value will be calculated for each block size separately. The block size is defined with the FFT resolution and th...
Wed, 23 May, 2018 at 11:02 AM
After recalculating SRS it is not showing data
The SRS mathematics is different then others because it requires correctly positioned cursors to work. If there are no results from the SRS mathematics, che...
Mon, 29 Apr, 2019 at 4:23 PM
Number of lines on 3D graph
Due to various factors and internal buffer structure, maximum history size in a 3D graph is usually smaller than defined history size in FFT. In the FFT...
Fri, 10 Aug, 2018 at 1:44 PM
MIF calculation
MIF is calculated using this formula: In this formula, TF is the transfer function of a response point. Usually, MIF is calculated without the "1 -&q...
Tue, 18 Dec, 2018 at 1:39 PM