Protuner 32 Control System Optimisation Tool
The Protunertm System Analysis for Windows software is a suite of programs, which work seamlessly together. The software is based on Microsoft Windows operation, with drop down menus and mouse commands such as: left-click, right-click, drag, click and double-click. If you are unfamiliar with Windows operation, we recommend that you read the “Getting Started Microsoft Windows” user’s guide.
Data Acquisition
The Protunertm Data Acquisition application is an intuitive software program, which is easy to configure and use. Features include:
Direct or network connection to your control system using a control system specific third party DDE server and the Protunertm generic DDE driver
Direct or network connection to your system using a control system specific OPC server and the Protunertm generic OPC driver
Connection to your control system I/O utilizing the Protunertm 1600PC analogue data acquisition modules connected to your computer serial port
All set-up configurations are saved as files
High speed real time trending of control system variables
User selected data window time and total sample time with on-the-fly total sample time changes
Analyser
The Protunertm Data Analysis application is a powerful system analyzer program, specifically designed with all the tools to effectively analyze, interpret, and document the dynamic characteristics of an installed control system. The system analysis software documents the controllability of a system, problems with valves, quality of measurement signals, installed linearity, and the optimum tuning parameters for individual loops and dynamic de-couplers between loops.
File Conversion Features
Protunertm 4.X and 5X files to Protunertm 32 format
Protunertm 32 data files to ASCII format and Excel XLS format
ASCII Excel XLS formatted data files to Protunertm 32 formatted data files
Convert Protunertm 32 files to new Protunertm 32 files with user selected signal filtering, data rates, and data channel selection
Data Editing Features
Edit and overwrite raw data using filter data and graphic edit functions
Data Display Features
Tab to display all data or individual data traces
Check box to switch between full scale to auto scaled display
Edit data channel name and engineering unit scale
Window and zooming functions
Features to arrange display by checking data to be displayed with user adjustable offset entries
X-axis displayed in relative time in seconds, relative time in H:M:S.00 format, or real time scale
Individual data graphs displayed in percent of span or engineering units
Balloon comments—that can be saved and recalled—can be added to any arranged data display
Text notes; attaches notes to file for documentation
Icon selected cursor changes mouse movement to on-screen cursoring function
Loop Analysis Functions to Calculate Optimum Tuning Parameters
Loop Analysis Data Preparation Features:
Select data representing controller output and process variable of controller being tuned
Tab to display PD (process demand) and PV (process variable) data on individual or overlapped graphs
Window and zoom step test data to identify test data representing true loop dynamic response
Graphic editing feature to remove excessive noise from recorded data and saves edit data as part of tuning record without overwriting original data
Lag, and averaging, filter constants are graphically added to real process variable data to graphically determine optimum controller filter tuning constant; the filter constant chosen is then used in calculation of tuning parameters
Calculation and documentation of valve hysteresis and deadband, and signal noise on unfiltered and unedited test data
Tuning procedure determines loop transfer function utilizing Techmation Inc. exclusive point to point digital LaPlace transformation of test data from time zero to time infinity; and table of tuning parameters utilizing pole cancellation and gain margin, phase margin, and damping factor criteria, based on user specified controller algorithm
Loop Analysis Report
Tab to display complete loop analysis tuning report data
Report tab displays complete tuning report summary including: table of tuning parameters, loop data documentation, loop signature report, and controller setting used in the analysis
Test data tab displays the test data used in the analysis
Loop data tab displays the step test data used in the analysis of the process transfer function including raw data, edited data, and filtered data.
Noise tab displays the steady state data used in the calculation of the signal noise and features include the ability to recalculate the signal noise
Hysteresis tab displays the test data used in the analysis of the valve hysteresis and features include the ability to recalculate the hysteresis
Bode Both, Bode Gain, Bode Phase, Nichols, and Nyquist tabs display the plots representing the solutions for the open loop process transfer function at hundreds of frequencies; the plots can be displayed combined with the controller tuning parameters from the Loop Analysis Report screen or with user entered tuning parameters
Model tab displays the Bode gain and phase plots of the actual process transfer function overlapped with Bode plots of the Model transfer function calculated for use in the Simulator; the modelling feature allows you to modify the model parameters to achieve a better fit to the real Bode plots of the process transfer function to improve the accuracy of the simulation
Balloon comments can be added to each tab to document findings
Text notes can be added to the Loop Analysis Report Record
The Loop Analysis Report can be saved as a Record quickly retrieved
Frequency Analysis Functions
Test data tab displays the raw test data originally chosen for the frequency analysis and allows the user to window a new section of data for analysis; the new data selection automatically updates all analysis functions
Synopsis tab displays the statistic, histogram, power spectrum, and cumulative spectrum plots on a single page
Statistics tab displays statistical analysis report on data being analysed
Histogram tab is a plot of the percentage of the data values that are within a range of process values (a cell); together all the cells span the range of the data; the value of the mean minus two sigma and the mean plus two sigma are printed at the bottom of the plot
Power Spectrum tab shows the mean square intensities of the cycles (harmonics) plotted against frequency (period)
Cum. Spectrum tab of the integrated normalised intensities from the power spectrum calculation which shows, for a given frequency, the relative contribution of it and all lower frequencies to the variance of the time series data
Autocorrelation tab shows the correlation amplitude as the Y-axis and the time as the X-axis; the span of the X-axis is based on the number of lags
Cross correlation tab shows the correlation amplitude as the Y-axis and the lag time as the X-axis; the variable selected for the analysis is cross correlated against second variable (a significant positive lag time means the variable selected is behind—lags—variable 1)
Balloon comments can be added to all individual plots
All analysis work can be saved as a record inside the file for easy retrieval and printing
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