H infinity controller gain

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

[david hartman]

hinffi may help.

Answer 1

[matlab_addicted]

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.