Comparisons: Discrete FOPD vs continuous IOPID in numerical simulation

[cnpcshangbo]

Discrete FOPD vs continuous IOPID in numerical simulation
a) Step response comparison

b) Robustness against plant gain variation (*0.125 slower, *8 more vibration)

FOPD is worse than iopid against plant gain variation.
To-do:

• irid correct near one?
• iopid z?
• use os4 to test.

[cnpcshangbo]

#23 (comment)

• Plant:
  num: [0.8592]
  den: [1.0710 1]
  plus integrator
• FOPD:
  NUM:
  [0.946963179122833,-2.77792961698899,2.98392102212133,-1.40760552266944,0.267978964388861,-0.0129932830769816]
  DEN:
  [1,-2.94510699389959,3.17934233429781,-1.51000556757338,0.290497513211450,-0.0143972840431492]
• IOPID:
  p=1.58, i=0.182, d=1.49

parent: 0b57b74

[cnpcshangbo]

Discrete FOPD vs continuous IOPID in both numerical simulation