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Placement Evaluation Function for Loading Objects in a Container

IP.com Disclosure Number: IPCOM000111783D
Original Publication Date: 1994-Mar-01
Included in the Prior Art Database: 2005-Mar-26
Document File: 2 page(s) / 33K

Publishing Venue

IBM

Related People

LeMaster, R: AUTHOR

Abstract

The Placement Evaluation Function, or PEF, provides a simple method for controlling the placement of objects into a container. The PEF provides an easily computed figure of merit for every possible placement of an object. The PEF is formulated so that, by choosing the placement with the best figure of merit, a particular loading of strategy is implemented. The PEF can also be formulated to consider factors that are non-numerical in nature, too.

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Placement Evaluation Function for Loading Objects in a Container

      The Placement Evaluation Function, or PEF, provides a simple
method for controlling the placement of objects into a container.
The PEF provides an easily computed figure of merit for every
possible placement of an object.  The PEF is formulated so that, by
choosing the placement with the best figure of merit, a particular
loading of strategy is implemented.  The PEF can also be formulated
to consider factors that are non-numerical in nature, too.

      The PEF is a linear function with a term for each parameter
that influences the placement decision.  Each term has a scaling
factor that reflects its importance relative to the other terms.  The
PEF has the following form:

                          f=c sub x x+c sub y y+c sub z z + sum from
i=1 to n of P sub i
where x, y, and z are the cartesian coordinates of a candidate
location for placing an object, relative to an origin of interest,
and P sub i is a term relating to a non-spatial loading parameter
that must be considered in selecting a location for the object.

      The c sub x, c sub y, c sub z terms are the coefficients of an
energy normal vector that controls the profile of the end of the load
woth respect to the chosen frame of reference.  The P sub i terms are
used to enforce consideration of loading parameters that are
non-spatial in nature (for example, that the objects of a given type
may only be pla...