LYAPACK is a MATLAB toolbox (i.e., a set of MATLAB routines) for the
solution of certain large scale problems in control theory, which are
closely related to Lyapunov equations. In contrast to the 'lyap' and
'dlyap' command in the MATLAB Control toolbox it uses iterative algorithms
and is intended for large, sparse problems.
The contents of the subdirectories are:
demos - some demo programs
examples - data and routines for generating test examples
guide - the user's guide (ps file and pdf file)
routines - the actual LYAPACK routines
usfs - so-called user-supplied functions for most common
types of problems
To get started:
- run a few demo programs:
+ change into the installation directory and run 'lstartup.m'
to set some paths
+ for solution of Lyapunov equations: run 'demo_l1'
+ for model reduction: run 'demo_m1' or 'demo_m2'
+ for Riccati equations and linear-quadratic optimal
control problems: run 'demo_r1'
- consult the user's guide: guide/guide.ps
- to see how user-supplied functions work: run 'demo_u1',
'demo_u2', or 'demo_u3'
Further notes:
- You might have to change the MATLAB paths in 'lstartup.m'
- LYAPACK is intended to be used in a UNIX environment. Note that
a few LYAPACK routines do not conform with the DOS-like naming
convention 'xxxxxxxx.yyy' for file names. Hence one needs at least
Windows 95 or better.
- The most up-to-date version of this toolbax can be found at
http://www.tu-chemnitz.de/sfb393/lyapack
- For questions, comments etc. contact Volker Mehrmann at
mehrmann@mathematik.tu-chemnitz.de
LYAPACK Version 1.0
Thilo Penzl, Nov.18, 1999