occ-developers — Mailing list intented for OCC developers.

[OCC-Developers] Online-Optimization of the Tennessee Eastman Process using OCC and IPOPT

[Tobias J. <Tob...@ep...>]

Dear IPOPT and OptControlCentre Users,

recently, we submitted a paper to 'Computers and Chemical Engineering'
about the on-line optimization of the Tennessee Eastman Process using
the OptControlCentre and IPOPT.

You can download the paper preview at the OptControlCentre homepage
(www.optcontrolcentre.com) under
http://www.optcontrolcentre.com/html/downloads.html.

Regards,

Tobias Jockenhoevel


Paper details:

Title:=20
Dynamic Optimization of the Tennessee Eastman Process using the
OptControlCentre

Authors:
Tobias Jockenh=F6vel, Lorenz T. Biegler and Andreas W=E4chter

Abstract:
This study focuses on the performance of large-scale nonlinear
programming (NLP) solvers for the dynamic optimization in real-time of
large processes. Here, the software platform OptControlCentre (OCC) is
presented for the implementation of the on-line real-time dynamic
optimization. OCC is an extensive software package with a graphical user
interface (GUI) implemented in the MATLAB/Simulink environment, which
allows its users to perform dynamic optimization of complex problems. To
demonstrate this approach, we consider the on-line real-time dynamic
optimization of the Tennessee Eastman (TE) Challenge Process. The
example captures the behavior of a typical industrial process and
consists of a two phase reactor, where an exothermic reaction occurs,
along with a flash, a stripper, a compressor and a mixer. The process is
nonlinear and open loop unstable; without control it reaches shutdown
limits within an hour, even for very small disturbances. The system is
represented through a first principles model with about 200 differential
algebraic equations (DAEs). The study compares two state-of-the-art NLP
solvers, SNOPT and IPOPT for dynamic optimization on a number of
challenging control scenarios.=20

Keywords:
Online optimization, OptControlCentre, NLP solvers, real-time
optimization, RTO, NMPC

Direct link:
http://www.optcontrolcentre.com/TE_Paper.pdf

[OCC-Developers] Jacobian Check Routine added

[Tobias J. <Tob...@ep...>]

Dear OCC Developers,

I've added a new small feature in the OptControlCentre, a Jacobian check
routine. The automatically generated Jacobian Matrix by OCOMA can now be
checked with this routine. This feature is accessable in the Offline
command menu.

Obviously, the OCOMA code should be always correctly generated. With
this feature, you could make sure it is and you could also easily check
external functions you might have added.

Regards,

Tobias Jockenhoevel