Register

Library

Linear

Description

A discrete delay block. When activated, internal state is copied on the output and the input is copied into the internal state.

Dialog Box

Set dollar block parameters
initial condition	0

• initial condition: Initial state of the discrete-time state

Default properties

• always active: no
• 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: 1 / 1
• number/sizes of activation outputs: 0 /
• continuous-time state: no
• discrete-time state: yes
• name of computational function: dollar

Interfacing function

scilab/macros/scicos_blocks/misc/DOLLAR_f.sci

Computational function (type 0)

      subroutine dollar(flag,nevprt,t,xd,x,nx,z,nz,tvec,ntvec,
     &     rpar,nrpar,ipar,nipar,u,nu,y,ny)
c     Copyright INRIA

c     Scicos block simulator
c     Ouputs delayed input
c
      double precision t,xd(*),x(*),z(*),tvec(*),rpar(*),u(*),y(*)
      integer flag,nevprt,nx,nz,ntvec,nrpar,ipar(*)
      integer nipar,nu,ny

c
      do 5 j=1,nu
         if(flag.eq.1.or.flag.eq.6.or.flag.eq.4) then
            y(j)=z(j)
         elseif(flag.eq.2) then
            z(j)=u(j)
         endif
 5    continue
      end