Le 25/02/2017 à 19:17, Pablo Fonovich a écrit :
Hi:
This is the first time i work with discrete time transfers functions
and Scilab.
I want to use bode() for plotting the magnitud and phase response of
the system, however, i don't understand how to set the frequencies to
normalized values (-pi, pi).
This is what i'm doing:
s=poly(0,'s')
H=(s^(-2400))/(1-0.5*s^(-2400))
S=syslin('d',H)
bode(S)
i get a warning that frequencies beyond nyquist rate are ignored and
the resulting plot is attached.
In the help, it says that bode parameter could include fmin and fmax
in herz, but isn't a discrete system response limited to normalized
frequencies? And to transform the normalized frecuency to herz the
sample rate must be used, but i don't know how to pass it to the
system or something.
S=syslin(dt,H) defines a dynamical system sampled. dt beeing the
sampling period in second.
If you want the frequency uniis be in rd/s add "rad" as last input argument
Any hints would be appreciated.
Thanks
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