high purity destillation benchmark in your book

Dear Sigurd,

I have had the high purity destillation benchmark from your
book with Postlethwaiteas project problem in a course on
robust control. It is an interesting problem. It would be nice
to know what magnitude
would be realistic and acceptable for the inputs during the
reference response to meet the design objectives as specified in
the book ? It appears that many methods generate very large
inputs during the response to the specified reference changes
if one wants to meets the specs on the outputs.

Grateful for an answer.

Best Regards, Pertti.
##############################################################
Pertti M. Makila, professor
Tampere University of Technology
Automation and Control Institute
P.O. Box 692, FIN-33101 Tampere, FINLAND

tel : +358-3-365 2332
fax : +358-3-365 2340
e-mail : pmakila@ae.tut.fi
##############################################################
Received on Mon Sep 15 12:16:52 1997