Deadband

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Description

Dialog Box

Set Deadband parameters
End of dead band	0.5
Start of dead band	-0.5
zero crossing (0:no, 1:yes)	1

• End of dead band: The value up to which the output remains zero.
• Start of dead band: The value above which the output becomes zero.
• zero crossing : Generate an event or not on zero-crossing.

Default properties

• always active: no
• direct-feedthrough: yes
• zero-crossing: yes
• mode: yes
• 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: no
• discrete-time state: no
• name of computational function: deadband

Interfacing function

scilab/macros/scicos_blocks/misc/DEADBAND.sci

Computational function (type 4)

#include "scicos_block.h"
#include <math.h>
void deadband(scicos_block *block,int flag)
{/* rpar[0]:upper limit,  rpar[1]:lower limit */
  if (flag==1){
    if (get_phase_simulation()==1||block->ng==0) {
      if (*block->inptr[0]>=block->rpar[0]){
	block->outptr[0][0]=*block->inptr[0]-block->rpar[0];
      }else if (*block->inptr[0]<=block->rpar[1]){
	block->outptr[0][0]=*block->inptr[0]-block->rpar[1];
      }else {
	block->outptr[0][0]=0.0;
      }
    }else{
      if (block->mode[0]==1){
	block->outptr[0][0]=*block->inptr[0]-block->rpar[0];
      }else if(block->mode[0]==2) {
	block->outptr[0][0]=*block->inptr[0]-block->rpar[1];
      }else{
	block->outptr[0][0]=0.0;
      } 
    }
  } else if (flag==9){
    block->g[0]=*block->inptr[0]-(block->rpar[0]);
    block->g[1]=*block->inptr[0]-(block->rpar[1]);
    if (get_phase_simulation()==1) {
      if (block->g[0]>=0){
	block->mode[0]=1;
      }else if (block->g[1]<=0){
	block->mode[0]=2;
      }else {
	block->mode[0]=3;
      }
    }
  }
}