2.3. Warehouse Layout Description
Automated stereoscopic warehouse has a total of A row of the shelf, each row has B column and C layer, one of
the closest to the ground as the first layer, the nearest to entrance and exit as the first column, there is a stacker
machine in each roadway, and a row of shelves on both sides of the roadway, a container (or pallet) on the shelf
sides can be made accessing operation by a stacker.
3. Model Building
3.1. The Objective Function and Constraint Conditions
In the process of optimization assigned on location selection , this article selects two optimizing principles that
are “nearest picking” principle based on in-out warehouse frequency and “first in first out” principle based on
turnover rate, this paper establishes the specific optimization objectives which are “minimizing the total operation
time” and “the total storage time of chosen goods is maximum”, combining with the constraint: warehouse
space limitation, the “multi-objective mathematical model of optimization assigned on location selection” is
built.