I have a SSM ( State Space Model ) and I want to calculate its optimum gains unisng
LQOutputRegulatorGains command. When I run the code, it solves the equations and give an answer, but this error also appears :
RiccatiSolve::ncsol: Cannot compute a stabilizing solution to the matrix equation.>>
What's wrong with it ?! And is it possible to change the method which
RiccatiSolve command uses to solve the equation ?
It is good to mention that
RiccatiSolve uses two methods : 1.Eigensystem 2.Schur.
I don't know how to change the
RiccatiSolve methods in the
Thank you in advance.