nonlinear plant model in matlab
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Hi I want to use a nonlinear plant to design IMC. The controller and the inverse model are linear but I have to use the nonlinear plant in the IMC structure. I really don't know how to describe the nonlinear state space model! Should I use Simulink and call it from the Mfile or what? the system is described like xdot=-x^2+(x+1)u and y=x+u ... it's a toy plant and I know it's maybe easy but if anyone can, help me please. Thanks
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Sebastian Castro
on 4 Jun 2017
You can use ordinary differential equation (ODE) solvers in MATLAB by specifying the relationship between ydot and y.
See for example: https://www.mathworks.com/help/matlab/ordinary-differential-equations.html or https://www.mathworks.com/videos/series/solving-odes-in-matlab-117658.html
- Sebastian
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