NDLI: TACO: a toolkit for AMPL control optimization

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TACO: a toolkit for AMPL control optimization

Content Provider	Springer Nature Link
Author	Kirches, Christian Leyffer, Sven
Copyright Year	2013
Abstract	We describe a set of extensions to the AMPL modeling language to conveniently model mixed-integer optimal control problems for ODE or DAE dynamic processes. These extensions are realized as AMPL user functions and suffixes and do not require intrusive changes to the AMPL language standard or implementation itself. We describe and provide TACO, a Toolkit for AMPL Control Optimization that reads AMPL stub.nl files and detects the structure of the optimal control problem. This toolkit is designed to facilitate the coupling of existing optimal control software packages to AMPL. We discuss requirements, capabilities, and the current implementation. Using the example of the multiple shooting code for optimal control MUSCOD-II, a direct and simultaneous method for DAE-constrained optimal control, we demonstrate how the problem information provided by the TACO toolkit is interfaced to the solver. In addition, we show how the MS-MINTOC algorithm for mixed-integer optimal control can be used to efficiently solve mixed-integer optimal control problems modeled in AMPL. We use the AMPL extensions to model three control problem examples and we discuss how those extensions affect the representation of optimal control problems. Solutions to these problems are obtained by using MUSCOD-II and MS-MINTOC inside the AMPL environment. A collection of further AMPL control models is provided on the web site http://mintoc.de . MUSCOD-II and MS-MINTOC have been made available on the NEOS Server for Optimization, using the TACO toolkit to enable input of AMPL models.
Starting Page	227
Ending Page	265
Page Count	39
File Format	PDF
ISSN	18672949
Journal	Mathematical Programming Computation
Volume Number	5
Issue Number	3
e-ISSN	18672957
Language	English
Publisher	Springer Berlin Heidelberg
Publisher Date	2013-04-30
Publisher Institution	Mathematical Optimization Society
Publisher Place	Berlin, Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mixed-integer optimal control Differential-algebraic equations Domain specific languages Mathematical modeling Methods of nonlinear programming type Programming languages Explicit machine computation and programs Optimization Operations Research/Decision Theory Theory of Computation Mathematics of Computing
Content Type	Text
Resource Type	Article
Subject	Theoretical Computer Science Software

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