Fortran 77 routines for H-infinity and H2 design of discrete-time linear control systems

Petko Hr. Petkov, Da-Wei Gu and Mihail M. Konstantinov

NICONET Report 1999-5: May 1999.

We present Fortran 77 subroutines intended for state-space design of H-infinity (sub)optimal controllers and H2 optimal controllers for linear discrete-time control systems.

The subroutines make use of LAPACK and BLAS libraries and produce estimates of the condition numbers of the matrices which are to be inverted and estimates of the condition numbers of the matrix Ricatti equations which are to be solved in the computation of the controllers. The subroutines will be included in the SLICOT library.