Benefit Estimation
The Benefit Estimation step aids the user in estimating the effect on the target output should optimal limits and setpoint values be used. The constructed process model is used to determine the optimal value ranges for each selected input in order to achieve a target value on the model target.
To access the Benefit Estimation view, click on the Benefit Estimation button (step 5 on the Troubleshooter project bar) to open the configuration dialog for the Benefit Estimation.
Configuring Benefit Estimation
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Select the input fields to be used to in the benefit estimation.
NOTE: All fields are used during the Benefit Estimation, only those fields selected will be adjusted. All other fields will retain their original values as provided in the data source. -
Configure the target setpoint for this benefit estimation exercise. Two options are available for use:
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Custom setpoint: Enter any numerical value as the optimization setpoint
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Use input field: Select any of the input fields available in the drop-down list as the optimization setpoint. (Note: Do not select a model input as the optimization setpoint. Model Inputs should be used as inputs to the optimization)
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Configure minimum and maximum values for each of the input fields by clicking the appropriate cell and entering the value. Optimization input ranges can be any numerical value. (Note: Setting limits to tight might seriously hamper the optimization routine in obtaining a model target close to the specified setpoint).
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Set the required accuracy (relative to the set point) in percentage points. This value will cause the optimization routine to stop optimizing a given set of inputs after it has reached a target value within the specified percentage range.
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Click on the Ok button when done.
The benefit estimation will now be automated and run through the entire data set to calculate a set of optimized inputs in order to obtain/achieve the desired target outcome on the model target.
NOTE: The benefit estimation can be stopped at any given time by clicking the stop button located to the bottom right of the benefit estimation view.
The Benefit Estimation view explained
Actual distribution
The distribution of the original model target is shown in this figure. The left Y-axis shows the number of seconds that the field resided in specific value ranges.
Optimized distribution
The distribution of the optimized model target is shown in this figure. The left Y-axis shows the number of seconds that the optimized field resides in specific value ranges.
Input/Target list
This list shows the list of input fields with their set ranges as well as the set point and it's value or field name. This will reflect the settings that was set previously in the configuration of the benefit estimation.
Optimized trend
This trend will display actual vs optimized values for the selection (see selection drop-down). Original value is drawn in red, the optimized value in blue and the setpoint in orange.
Graph Options
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Scroll Axes: Select this option then click and drag on the axes to scroll the axes itself.
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Zoom Axes: Select this option then click and drag on the axes to zoom in or out.
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Zoom in: Zooms into the graph.
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Zoom out: Zooms out of the graph.
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Zoom to fit: Zooms to fit the entire graph into the window.
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Show / Hide ruler: Toggles the display of the ruler and the labels for values at the ruler position.
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Enable / Disable tracking: Toggle the display of the newest data points that are drawn.
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