gainplot - magnitude plot

Calling Sequence

gainplot(sl,fmin,fmax [,step] [,comments] )

gainplot(frq,db,phi [,comments])

gainplot(frq, repf [,comments])

Parameters

• sl : list ( syslin SIMO linear system).
• fmin,fmax : real scalars (frequency interval).
• step : real (discretization step (logarithmic scale))
• comments : string
• frq : matrix (row by row frequencies)
• db,phi : matrices (magnitudes and phases corresponding to frq )
• repf : complex matrix. One row for each frequency response.

Description

Same as Bode but plots only the magnitude.

Examples

s=poly(0,'s')
h=syslin('c',(s^2+2*0.9*10*s+100)/(s^2+2*0.3*10.1*s+102.01))
gainplot(h,0.01,100,'(s^2+2*0.9*10*s+100)/(s^2+2*0.3*10.1*s+102.01)')
clf()
h1=h*syslin('c',(s^2+2*0.1*15.1*s+228.01)/(s^2+2*0.9*15*s+225))
gainplot([h1;h],0.01,100,['h1';'h'])
 
  

See Also

bode ,   black ,   nyquist ,   freq ,   repfreq ,   g_margin ,   p_margin ,