How do you calculate instantaneous output of a transfer function ?

I'm currently working on genetic algorithm. for testing the Population of (Kp,Ki,Kd) (which are the PID controller parameters) i usually use the close loop.

 ie, 1. I calculate the series transfer function of Plant and PID controller
     2. I close the loop using feedback command (negative feedback)
     3. I check the result for step input (using step command)
     4. and then i calculate ISE/IAE/or whatever is required as cost function.

Now when i want to do same with fuzzy there are following problems

     1. I do not know the transfer function of fuzzy system as I know about PID
     2. I can calculate the instantaneous fuzzy output at the first sampling instance but I cannot use that output to calculate the output of my plant (Note:   _lism  command requires atleat two input for calculation of output)  )

My Question is does there exist any command to calculate output of filter/transfer_function for just one input sample at a time ?

if not , then is there any way a simulink model (which has ability do calculate it) be incorporated or called in a matlab file ?

or, is there any way to calculate Transfer_function of any Fuzzy controller model ?

[shubham sharma]

hi... how to apply ISE/IAE on transfer function with different order

Answer 1

[Arkadiy Turevskiy]

Your best bet is probably calling a Simulink model that would simulate closed loop response of your fuzzy controller. You can call Simulink model with command sim.

HTH.

Arkadiy

[Ruchit Pathak]

Actually it does solves my problem.

Thanks :)