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Variational Trajectory Optimization Tool Set : Technical description and user's manual

Author
Wetzel, Todd A.
Published
Jul 1, 1993.
Physical Description
1 electronic document
Additional Creators
Queen, Eric M., Moerder, Daniel D., Bless, Robert R., and Cavanaugh, Michael D.
Online Version

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Restrictions on Access
Unclassified, Unlimited, Publicly available.
Free-to-read Unrestricted online access
Summary
The algorithms that comprise the Variational Trajectory Optimization Tool Set (VTOTS) package are briefly described. The VTOTS is a software package for solving nonlinear constrained optimal control problems from a wide range of engineering and scientific disciplines. The VTOTS package was specifically designed to minimize the amount of user programming; in fact, for problems that may be expressed in terms of analytical functions, the user needs only to define the problem in terms of symbolic variables. This version of the VTOTS does not support tabular data; thus, problems must be expressed in terms of analytical functions. The VTOTS package consists of two methods for solving nonlinear optimal control problems: a time-domain finite-element algorithm and a multiple shooting algorithm. These two algorithms, under the VTOTS package, may be run independently or jointly. The finite-element algorithm generates approximate solutions, whereas the shooting algorithm provides a more accurate solution to the optimization problem. A user's manual, some examples with results, and a brief description of the individual subroutines are included.
Other Subject(s)
Collection
NASA Technical Reports Server (NTRS) Collection.
Note
Document ID: 19930023192.
Accession ID: 93N32381.
L-17166.
NASA-TM-4442.
NAS 1.15:4442.
Terms of Use and Reproduction
No Copyright.
View MARC record | catkey: 15666893