# Fractional PID Controller Design

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Viewing 7 posts - 46 through 52 (of 52 total)
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• #1077
Aleksei
Keymaster

Instead of G=1/s+1 use G=fotf(1/s+1).

#1078
Nitish Katal
Guest

Thanks a lot sir, it worked.

But now when am trying to find the Infinity Norm of the Senetivity function using norm (sys_cl, Inf) it again gives errors. As:

#1080
Aleksei
Keymaster
#1081
ASHIF
Guest

is there any method to find out parameters of FOPID controller by matching loop response to a model
ie,,
if if C(s) is FOPID Structure
and if we have plant transfer function G(s) and model M(s)
such that C(s)*G(s)=M(s) frequency ranges are w=10^-2 to 10000

#1083
Aleksei
Keymaster

You can develop this into an optimization problem.

#1090
Naeem Haider
Guest

Hi ,

i am using fomcon and its working very well with matlab 2012 ,, but now i have to use fomcon toolbox with matlab 2008 , and fotf_gui ,, and all other functions are working perfectly in matlab.. but i need fractional integrator block in simulink , but simulink is not supporting all the blocks of fomcon,,, and i m trying to use integrator block in non linear model which cannot be written in transfer function format…. i can write fotf in matlab workspace ,,, but not in simulink,,, is there any way i can import transfer function from workspace to simulink model… and also another problem is i have to use matlab 2008 because its synced with physical system…

kindly help me its about how to make fractional transfer function from matlab to simulink model…..

#1094
Aleksei
Keymaster
Viewing 7 posts - 46 through 52 (of 52 total)
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