Non linear output to linear output

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Aniket
Aniket 2013-5-2
Hello,
Is it possible to convert non linear output to linear out put
I have system which is non linear system , its output is non linear and i want to feed this output to linear system. So is it possible to convert the non linear system output to linear and then feed to linear system ?
if it is possible then how to do that in matlab or simulink ?
  2 个评论
Shashank Prasanna
Shashank Prasanna 2013-5-2
Are you trying to linearize you non-linear model? "Convert nonlinear output to linear output" is not clear.
Please provide more information if you can.
Aniket
Aniket 2013-5-2
Hello,
I am working on adaptive oscillator which is made of nonlinear equations and which estimates the input signal frequency.
and i am using LQG control which is Linear made of Linear system ..i want to connect adaptive oscillator and controller but both have different properties ..
so i thought if oscillator system output can be convert to linear and then feed this linear output to LQG system ...is this possible ?
or any other way is there ?
thank you

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回答（1 个）

Shashank Prasanna
It is still not clear what you mean by 'converting an output to linear'.
It seems you want to linearize your nonlinear oscillator, then you can use the following linearization tools:
http://www.mathworks.com/help/slcontrol/linearization-basics.html
However, you don't have to linearize your non-linear plant model in order to connect it to your LQG controller. Linear controllers can be used with nonlinear plant models but you mileage may vary.

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