How do I estimate a continuous time transfer function for a specific structure using the System Identification Toolbox?
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I am attempting to use System Identification to calculate the coefficients of a transfer function. However, I am trying to find the coefficients of a model whose structure that I specify, and that does not seem possible. What I would like to do is specify the structure:
H(s)=(K*(s+z1))/((s+p1)*(s+p2))
and have System ID calculate the values of K, z1, p1, p2.
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MathWorks Support Team
2010-3-2
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A specified structure of a transfer function can be estimated using PEM on IDGREY models. You can download the following example and place these files on the MATLAB Search path:
mymfile.m
est_demo.m
If you have System Identification Toolbox 6.0 (R13SP1+), you can download the following example which uses IDGREY and IDPROC models:
mymfile.m
est_demo_ident6.m
If you have System Identification Toolbox 4.0.5 (R11), you can download the following example, which indirectly creates an IDGREY model:
mymfiler11.m
est_demo_identr11.m
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