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H infinity controller gain

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karthik pakala
karthik pakala 2017-7-6
编辑： david hartman 2021-6-10
Hi, I am trying to design a H infinity(Static Output Feedback) controller for the given system,output being a constant gain matrix K(u=-K*x).I have seen that the the the hinfsyn returns a state space controller model. I don't understand as to how to convert it into a constant gain matrix to be used as a feedback gain. Or, is there any other method to obtain the constant feedback H-infinity gain

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matlab_addicted
matlab_addicted 2019-11-11
you cannot. It is a different type of controller, more complex than a simple constant matrix. H infinity gives you back a full dynamic system representing your controller, that is a set of matrices A,B,C,D.
You can actually interpret the classic K matrix as a dynamic system with no states, but only a feedthrough matrix D = -K.

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