How to extract information from sys
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I would like to extract the coefficients in a discrete transfer function that I construct from a continuous transfer function. For example,
num=[.001 0 ];
Now, if I do the following:
z - 1
z - 0.9776
Sample time: 2.2676e-05 seconds
Discrete-time transfer function.
how can I extract the coefficients a1,a2, b1,b2 in the z-transform
(b1*z+b2)/(a1*z+a2)? That is, can I find b1=1, b2=-1, a1=1, a2=-.9776?