Subsections
Constraint
Others
Solves implicit equations by providing free output and forcing input
to be zero. This is an implicit block (beta testing stage).
| Set Constraint block parameters |
|
| Set number of constraints |
1 |
- Set number of constraints: indicate the number of constraints
- always active: yes
- direct-feedthrough: no
- zero-crossing: no
- mode: no
- number/sizes of inputs: 1 / 1
- number/sizes of outputs: 1 / 1
- number/sizes of activation inputs: 0 /
- number/sizes of activation outputs: 0 /
- continuous-time state: yes
- discrete-time state: no
- name of computational function: constraint
scilab/macros/scicos_blocks/misc/CONSTRAINT_f.sci
subroutine constraint(flag,nevprt,t,res,xd,x,nx,z,nz,tvec,ntvec,
& rpar,nrpar,ipar,nipar,u,nu,y,ny)
c Copyright INRIA
c Scicos block simulator
c
double precision t,xd(*),x(*),z(*),res(*),tvec(*),rpar(*)
double precision u(*),y(*)
integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
integer nipar,nu,ny
c
common /dbcos/ idb
c
if (flag.eq.0) then
do 12 i=1,nu
res(i)=xd(i)-u(i)
res(i+nu)=xd(i)
12 continue
elseif(flag.eq.1) then
do 14 i=1,ny
y(i)=xd(i+nu)
14 continue
c elseif(flag.eq.6.or.flag.eq.7) then
c do 12 i=1,nu
c 12 continue
endif
end
Ramine Nikoukhah
2004-06-22