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// Scilab ( http://www.scilab.org/ ) - This file is part of Scilab
// Copyright (C) INRIA -
//
// This file must be used under the terms of the CeCILL.
// This source file is licensed as described in the file COPYING, which
// you should have received as part of this distribution. The terms
// are also available at
// http://www.cecill.info/licences/Licence_CeCILL_V2.1-en.txt
function [sl,name]=bloc2ss(syst)
//
[lhs,rhs]=argn(0)
if type(syst)<>15 then
error(msprintf(gettext("%s: Wrong type for input argument #%d: A list expected.\n"),"bloc2ss",1))
end;
syst1=syst(1);
if syst1(1)<>"blocd" then
error(msprintf(gettext("%s: Wrong type for input argument #%d: A list expected.\n"),"bloc2ss",1))
end;
nsyst=size(syst)
dom=[]
for l=2:nsyst
sys=syst(l)
typ=part(sys(1),1)
if typ<>"l" then
if typ=="b" then
//recursion pour traiter les description bloc imbriquees
sys=list("transfert",bloc2ss(sys))
syst(l)=sys
end
transfert=sys(2)
if type(transfert)==10 then transfert=evstr(transfert);end
tr1=transfert(1);
if tr1(1)=="r" then transfert=tf2ss(transfert);end
syst(l)=list("transfert",transfert)
if type(transfert)==16 then
d=transfert(7)
if d<>[] then
if dom==[] then
dom=d
elseif dom<>d then
if dom=="c" then
error(msprintf(gettext("%s: Hybrid system not implemented.\n"),"bloc2ss"))
elseif dom=="d"&type(d)==1 then
dom=d
elseif type(dom)==1&type(d)==1 then
error(msprintf(gettext("%s: Multi rate discrete system not implemented.\n"),"bloc2ss"))
end
end
end
end
end;
end;
[lboites,lliens,lentrees,lsorties]=blocdext(syst)
nio=[prod(size(lentrees)),prod(size(lsorties))]
//
lliens=[lliens lentrees lsorties]
if lhs==2 then
in_names=[]
for kvar=lentrees
obj=syst(kvar)
in_names=[in_names;obj(2)]
end
out_names=[]
for kvar=lsorties
obj=syst(kvar)
out_names=[out_names;obj(2)]
end
name=list(in_names,out_names)
end
//on ecrit le systeme bloc diagonal constitue de l'ensemble des sous systemes
a=[];ms=0;b=[];mi=0;c=[];mo=0;d=[];lgain=[]
insize=1;outsize=1;inn=1;outn=1;
in=[];out=[];
corresp=[];l=0
for numero=lboites
l=l+1
corresp(numero)=l
bloc=syst(numero);transfert=bloc(2)
if type(transfert)==1 then //c'est un gain
[mok,mik]=size(transfert)
[msk,msk]=size([])
if ms>0 then
b(ms,mi+1:mi+mik)=0*ones(1,mik)
c(mo+1:mo+mok,ms)=0*ones(mok,1)
end
d(mo+1:mo+mok,mi+1:mi+mik)=transfert
mo=mo+mok;mi=mi+mik;ms=ms+msk
insize=[insize insize(inn)+mik];inn=inn+1
outsize=[outsize outsize(outn)+mok];outn=outn+1
else // un bloc dynamique
[mok,mik]=size(transfert(5))
[msk,msk]=size(transfert(2))
a(ms+1:ms+msk,ms+1:ms+msk)=transfert(2)
b(ms+1:ms+msk,mi+1:mi+mik)=transfert(3)
c(mo+1:mo+mok,ms+1:ms+msk)=transfert(4)
d(mo+1:mo+mok,mi+1:mi+mik)=transfert(5)
mo=mo+mok;mi=mi+mik;ms=ms+msk
insize=[insize insize(inn)+mik];inn=inn+1
outsize=[outsize outsize(outn)+mok];outn=outn+1
end
end
//on ecrit la matrice de feedback K
k=0*ones(insize(inn)-1,outsize(outn)-1)
for numero=lliens
fil=syst(numero)
nnum=size(fil)-3
if nnum<=0 then
error(msprintf(gettext("%s: Incorrect link: %s"),"bloc2ss",string(numero)))
end
debut=fil(3)
bdebut=debut(1) //numero de la boite origine du lien ou de l'entree
pdebut=debut(2:prod(size(debut))) // ports origines
if pdebut==[] then // dimension implicite
fin=fil(4);pfin=fin(2:prod(size(fin)))
if pfin<>[] then
//meme dimension que le port d'entree du premier bloc connecte
pdebut=1:prod(size(pfin))
else
if fin(1)>0 then // dimension d'entree du premier bloc aval
bfin=corresp(fin(1))
pdebut=1:(insize(bfin+1)-insize(bfin))
else // dimension de sortie du bloc amont
bd=corresp(bdebut)
pdebut=1:(outsize(bd+1)-outsize(bd))
end
end
end
if bdebut>0 then, //le lien est issu d'un bloc
bdebut=corresp(bdebut)
ll0=1
else // le lien correspond a une entree
if nnum>1 then, //l'entree attaque plusieurs blocs,on rajoute un gain
np=prod(size(pdebut))
d(mo+np,mi+np)=eye(np,np)
if ms>0 then b(ms,mi+np)=0;c(mo+np,ms)=0;end
mo=mo+np
mi=mi+np
in=[in mi]
insize=[insize insize(inn)+np];inn=inn+1
outsize=[outsize outsize(outn)+np];outn=outn+1
bdebut=outn-1
k(mi,mo)=0
else
fin=fil(4)
bfin=corresp(fin(1))
fin=fin(2:prod(size(fin)))
if fin==[] then //dimension implicite
fin=1:(insize(bfin+1)-insize(bfin))
end
in=[in, (insize(bfin)-1)*ones(fin)+fin]
ll0=2
end
end
for ll=ll0:nnum
fin=fil(ll+3)
bfin=fin(1)
if bfin >0 then
bfin=corresp(bfin)
pfin=fin(2:prod(size(fin)))
if pfin==[] then //dimension implicite
pfin=1:(insize(bfin+1)-insize(bfin))
end
iin=(insize(bfin)-1)*ones(pfin)+pfin
iou=(outsize(bdebut)-1)*ones(pdebut)+pdebut
k(iin,iou)=eye(prod(size(iin)),prod(size(iou)))
else // le lien fournit une sortie
pfin=fin(2:prod(size(fin)))
if pfin==[] then //dimension implicite
pfin=1:prod(size(pdebut))
end
if prod(size(pfin))<>prod(size(pdebut)) then
error(msprintf(gettext("%s: Wrong size for link from block %s.\n"),"bloc2ss",string(bdebut)))
end
out=[out, (outsize(bdebut)-1)*ones(pfin)+pdebut(pfin)]
end
end
end
if or(size(d')<>size(k)) then
error(msprintf(gettext("%s: Invalid sizes found during the process.\n"),"bloc2ss"))
end
sl=syslin([],a,b,c,d)/.(-k)
sl=sl(out,in)
sl(7)=dom
endfunction
function [lboites,lliens,lentrees,lsorties]=blocdext(syst)
//!
//
lboites=[]
lliens=[]
lentrees=[]
lsorties=[]
nsyst=size(syst)
for k=2:nsyst
obj=syst(k)
if type(obj)==15, if size(obj)>1 then
select part(obj(1),1)
case "t",
lboites=[lboites,k]
case "l"
obj2=obj(3)
if obj2(1)>0 then
nobj=size(obj)
is_sortie=[]
for ko=3:nobj
objk=obj(ko)
if objk(1)<0 then is_sortie=[is_sortie,-objk(1)],end
end;
if is_sortie==[] then lliens=[lliens,k],
else lsorties(1,is_sortie)=k
end;
else lentrees(1,-obj2(1))=k,
end;
else error(msprintf(gettext("%s: Undefined type ''%s''.\n"),"bloc2ss",part(obj(1),1)))
end;
end,end
end;
if lsorties==[] then
error(msprintf(gettext("%s: No output found.\n"),"bloc2ss")),
end
if lentrees==[] then
error(msprintf(gettext("%s: No input found.\n"),"bloc2ss")),
end
if min(lsorties)==0 then
error(msprintf(gettext("%s: Some output(s) are undefined.\n"),"bloc2ss")),
end
if min(lentrees)==0 then
error(msprintf(gettext("%s: Some input(s) are undefined.\n"),"bloc2ss")),
end
endfunction
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