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3.12 Nonlinear Simplification Techniques 409
Display settings stored in
step1.
In[11]:= NonlinearSettings[step1]
Input symbols : {II, VLOAD}
Output symbols : {I$VLOAD, V$5}
Ranking−Cache : −not set−
DT range : {{VLOAD −> 0., II −> 0.}, }
DTSimulation : MyDTSimulationFct
DTError : MyDTErrorFct
DTReference : {}
OperatingPoints : {}
3.12.2 CompressNonlinearEquations
CompressNonlinearEquations[dae, outvars]
removes equations and eliminates variables from a
nonlinear DAEObject dae which are irrelevant for solving
for the variables outvars
CompressNonlinearEquations[dae]
removes as many equations and variables as possible
Command structure of CompressNonlinearEquations.
This function contains a compression algorithm which allows for identification and elimination of
irrelevant equations and variables and the removal of decoupled clusters of equations and variables
in a system of symbolic nonlinear differential and algebraic circuit equations. The return value is
again a DAEObject.
Note that the argument outvars also supports string patterns. Additionally,
CompressNonlinearEquations automatically retrieves the settings made by NonlinearSetup, so
there is no need to specify the variables of interest as a second argument.
Note that CompressNonlinearEquations also supports the data format from Release 1, where
equations are given as {eqns, vars}, instead of a DAEObject:
CompressNonlinearEquations[{eqns, vars}, outvars]
removes equations and eliminates variables from a set of
nonlinear equations eqns formulated in the variables vars
which are irrelevant for solving for the variables outvars
CompressNonlinearEquations[{eqns, vars}]
removes as many equations and variables as possible
Additional patterns of CompressNonlinearEquations.
CompressNonlinearEquations has the following options: