nonlinear identification with anfis

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meysam
meysam on 20 Jan 2015
Answered: Yarpiz on 12 Sep 2015
Hi I want to use ANFIS method, to identify below equation. Somebody has experience on this please comment on how to identify this nonlinear equation with ANFIS.
y'''+10*y''+10*y'+y=-y^3+u
u is noise.

Answers (1)

Yarpiz
Yarpiz on 12 Sep 2015
You should rewrite the differential equation as a canonical state-space model, as dx/dt = f(x). And then, build a ANFIS model for the last row of the f(x), using function approximation capability of ANFIS structure.
For this purpose, you can use the following codes:

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