Check: Bode plot z vs s in linear model

[cnpcshangbo]

#29 (comment)
To do:
Check Bode plot z vs s for irid s^1.9.
Check Bode z vs s for iopid slow.
Check Bode plot for Oustaloup.

[cnpcshangbo]

s^1.9 use irid. From this plots, Bode plot fits well but impulse has a large error.
num:
[1,-3.83915008336134,5.68830152517571,-4.01123857485582,1.31417664909109,-0.152089532241851]
den:
[8.08505564819526e-05,-0.000204449367025327,0.000263365621479140,-0.000214834792194125,8.91860440440781e-05,-1.22283037538058e-05]

[cnpcshangbo]

step response

[cnpcshangbo]

pulse at 5

[cnpcshangbo]

Good results.

[cnpcshangbo]

Why iopid has static error?