POST is the EicasLab tool specifically conceived for performing the post-processing analysis of the data recorded both during the like real-time simulations and during the experimental trials execution.
The POST tool is available in the EicasLab base.
Typically, during the execution of a simulated or experimental trial, only a limited number of variables of your control system may be monitored or accessible.
In EicasLab, the SIM and the RCP Manager, Slow Motion, HIL Manager, TARGET Manger tools – devoted respectively to manage the like real-time simulations and the experimental trials execution – offer the possibility of plotting on the screen the trends of a pre-selected set of variables (up to 24 variables). Anyway, to understand if your control system works correctly, sometimes it is necessary a smart data processing that allows a deep offline analysis of the dynamic behaviour of the overall control variables.
For such a reason, EicasLab:
The data to be included in a POST file may be configured by the user with the SIMBUILDER tool.
A POST file is created for every programmable block of the three main EICASLAB Working Areas (The Plant Area, the Control Area and the Mission Area). The name of the POST file is exactly the name of its corresponding block and it will contain all and only the selected internal variables of that block. It is then easy to identify the POST file containing any specific variable.
The POST files are automatically created by the SIM, RCP Manager, Slow Motion, HIL Manager and TARGET Manger tools during the simulation or experimental trial execution and they are recorded on the PC disk.
The recorded data are saved as binary files to reduce the amount of used disk space. Besides, the user can set the frequency of the POST data recording for further reducing the used disk space and also the trial execution time.
Once created the POST files, the POST tool may be used to perform the accurate offline post analysis.
The POST tool provides a file manager devoted to the selection of the POST files containing the variables that the user wants to analyse.
Once selected the POST files to be analysed, the list of the variables included in them is loaded in the POST Processing Window, showing the variable names assigned by the user during the design phase in SIMBUILDER.
In the Processing Window the user can perform a set of mathematical (addition, product, inverse, sine, cosine, exponential and much more) and statistical computations on the selected variables and he can create new variables which are functions of the others. If desired, the new variables may be recorded on a new POST file.
In the Processing Window the user can select the variables to be plotted, choosing between time or phase diagrams.
Finally the variables may be plotted in the POST Plotting Window where a set of plotting areas may be used and configured, each one able to show and manage up to 10 variables.
Each displayed graph can be customized by setting linear or logarithmic scales, different levels of zoom, different types of grids or various types of lines (f.i. dashed, dotted, ...).
Furthermore mathematical and statistical analysis may be performed, such as computation of number of samples, the mean value and the standard deviation of a whole graph or of a part of it.
In order to speed up the post-processing activity, the user may save some plot configurations of his particular interest, in order to quickly reload them when needed.