XML
Loading
Laplace.T Root-locus Transient response Frecuency response
       
 
 
 

4 Example 8-11 OGATA 4ed(Nyquist plot)



    Let's plot Nyquist plot by Scilab.

    \begin{displaymath}G(s)=\frac{1}{s\cdot (s+1)}\end{displaymath}

    Scilab program
    clf;
    
    s=%s/(%2*pi);
    
    s1=-s;
    
    g=1/(s*(s+1));
    
    g1=1/(s1*(s1+1));
    
    gs=syslin('c',g);
    
    gs1=syslin('c',g1);
    
    nyquist(gs);
    
    nyquist(gs1);
    
    mtlb_axis([-2 2 -5 5]);
    
    xtitle('Nyquist plot of 1/(s*(s+1))')
    

     

    Image Ejemplo8-11Pag535





cajael