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278 3. Reference Manual
Match symbols of resistors
in the DAEObject.
Compute matched voltage
transfer function.
Modify values of resistors
R2 and R3.
Match symbols of resistors
of the modified
DAEObject.
In[7]:= daematch = MatchSymbols[dae, {"R*", R}];
DisplayForm[daematch]
Out[8]//DisplayForm=
1
R
1
R
0 0 1
1 2
R
R
1
R
0 0
0
1 2
R
R
1
R
0 .
0 0
1 1
R
Load
1
R
0
1 0 0 0 0
In[9]:= V$out /. First[Solve[daematch]]
Out[9]=
Load
Load 3 R
V$1
V$2
V$3
V$out
I$V0
0
0
⩵⩵ 0
0
1
In[10]:= daenew = UpdateDesignPoint[dae, {R2 −> 15., R3 −> 20.}]
Out[10]= DAEAC, 5 5
In[11]:= MatchSymbols[daenew, {"R*", R}] // DisplayForm
MatchSymbols::mtol:
Design−point values of matching group {R1, R2, R3}
do not meet the tolerance specification.
Out[11]//DisplayForm=
1
R1
1
R1
0 0 1
1 1
R1
R1
1
R2
1
R2
0 0
0
1 1
R2
R2
1
R3
1
R3
0 .
0 0
1 1
R3
Load
1
R3
0
1 0 0 0 0
V$1
V$2
V$3
V$out
I$V0
0
0
⩵⩵ 0
0
1
3.6.16 ShortenSymbols
ShortenSymbols[dae]
replaces symbols in dae by a set of symbols with shorter
symbol names
Command structure of ShortenSymbols.
Given a DAEObject dae, ShortenSymbols replaces all symbols (variables and parameters) by a set of
new symbols with shorter symbol names and returns a new DAEObject. Please note that the new
symbols are generated at the expense of instance information as name components enclosed by the
InstanceNameSeparator are dropped.
ShortenSymbols has the following options: