Scilab Function

krac2 - continuous SISO system limit feedback gain

### Sequence d'appel

  `g=krac2(sys)`

### Parametres

- `sys` : SISO linear system (syslin)
- `g` : constant

### Description

`krac2(sys)` computes the gains `g` such that the system `sys` fedback by g (`sys/.g`) has 2 real equal poles.

### Exemples

    h=syslin('c',352*poly(-5,'s')/poly([0,0,2000,200,25,1],'s','c'));
    xbasc();evans(h,100)
    g=krac2(h)
    hf1=h/.g(1);roots(denom(hf1))
    hf2=h/.g(2);roots(denom(hf2))

### Voir aussi

`evans` `kpure`