How to tune FOPD controller parameters? about simscapefopd

[cnpcshangbo]

[cnpcshangbo]

Then I put those FOPD parameters into the simulator.

assignin('base','wb',1e-3);
assignin('base','wh',1e7);

[cnpcshangbo]

Then I tried to run with my old parameters.

assignin('base','wb',1e-10);
assignin('base','wh',1e-9);

[cnpcshangbo]

To do:
A. Try to investigate on why high frequency oscillation?
B. Research on how to set the frequency range. What is bandwidth of a control system?
C. Investigate on what should the speed set-point look like. Why it looks different?
D. Search some articles to see if others have the same issue.

[cnpcshangbo]

Finally, we found the reason. I used Fractional DD block in the simulator, however, it is a continuous block, I need to change it to discrete block.

Please refer to this new issue:
#10

[cnpcshangbo]

I added a new Edit to enter sampling period(Ts).

[cnpcshangbo]

Then I added a c2d command to change the transfer function to discrete.