Subsections
Threshold detection at zero
Threshold
An output event is generated when all inputs (if more than one) cross
zero simultaneously.
Set Zero-Crossing parameters |
|
Input size |
1 |
- Input size: a positive integer.
- always active: no
- direct-feedthrough: yes
- zero-crossing: yes
- mode: no
- number/sizes of inputs: 1 / 1
- number/sizes of outputs: 0 /
- number/sizes of activation inputs: 0 /
- number/sizes of activation outputs: 1 / 1
- continuous-time state: no
- discrete-time state: no
- name of computational function: zcross
scilab/macros/scicos_blocks/threshold/ZCROSS_f.sci
subroutine zcross(flag,nevprt,t,xd,x,nx,z,nz,tvec,ntvec,
& rpar,nrpar,ipar,nipar,u,nu,g,ng)
c Copyright INRIA
c Scicos block simulator
c zero crossing block
c
double precision t,xd(*),x(*),z(*),tvec(*),rpar(*),u(*),g(*)
integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
integer nipar,nu,ng
c
if ((flag.eq.3).and.(nevprt.lt.0)) then
kev=0
do 44 j = 1,ng
kev=2*kev+abs(g(ng+1-j))
44 continue
do 45 j = 1,ng
kev=2*kev
if (g(ng+1-j).eq.-1) kev=kev+1
45 continue
l=kev*ntvec
do 10 i=1,ntvec
tvec(i)=rpar(l+i)+t
10 continue
elseif(flag.eq.9) then
do 20 i=1,ng
g(i)=u(i)
20 continue
endif
end
Ramine Nikoukhah
2004-06-22