Fortran 77 routines for H-infinity and H-2 design of continuous-time linear control systems

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

NICONET Report 1998-8: September 1998.

Fortran 77 routines are presented for state space design of H-infinity (sub)optimal controllers and H-2 optimal controllers for linear continuous-time control systems. The subroutines make use of LAPACK and BLAS libraries and produce estimates of the conditioning of the corresponding matrix algebraic Ricatti equations. Modified formulae are implemented in the case of H-infinity design which allows to reduce the order of the inverted matrices. The subroutines will be included in the SLICOT library.