eldo_user

Optimization
Monitoring Design Objectives
• MONIT_VAL=MAX or MONIT_VAL=MIN, the printed value will be the maximum
Max{f r (k) (x)} or the minimum Min{f r (k) (x)}.
• MONIT_VAL=ERRMEAN, the printed value will be the sum
of the squared residuals.
• MONIT_VAL=ERRMAX or MONIT_VAL=ERRMIN, the printed value will be the
maximal error function Max{|f (k) r (x) − r (k) |} or the minimal error function Min{|f (k) r (x) −
r (k) |}.
Related Topics
Design Objectives
Output from the Optimization Process
Explicitly Declaring Results For Graphical Viewing
Viewing the ASCII Output File
ASCII Optimization File Contents
Final Diagnostic Conditions
Normal and Elastic Modes of Termination
Monitoring Minimize and Maximize Objectives
When the design objectives are specified as MINIMIZE and MAXIMIZE there is no error
function associated with the objectives.
Consider the following netlist as a basic example:
* Design parameter (temperature)
.STEP TEMP -25 150 5
* Design variable specification
.PARAMOPT x = (x0,a,b)
* Minimization
.OBJECTIVE EXTRACT_INFO LABEL=f_m {$MACRO|FUNCTION}
+ GOAL=MINIMIZE MONIT_VAL=ERRMEAN
This will minimize the functions f m (x; T k ) with respect to design variable x which is subject to
the constraints a ≤ x ≤ b, where T k represents a point of discretization in the temperature interval
[-25, 150].
You can monitor the mean value or the max/min values of these types of objectives:
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Eldo® User's Manual, 15.3