388 Chapter 6. Function Reference
variable,X=x2x−1
1, is the stabilizing solution to the Riccati equation.
If Hhas jω axis eigenvalues then no stabilizing solution exists and the function returns a
failure status. If any eigenvalue of His within epp of the jω axis it is considered to lie on
the jω axis and no solution is found. This may be due to numerical problems in finding
the eigenvalues of poorly conditioned problems even when a stabilizing solution exists.
See Also
Riccati, riccati schur