Layout Optimization of Flexible Manufacturing Cells Based on Fuzzy Demand and Machine Flexibility

Table 3

The variables in the MCs model.

variables	Description
	Product family
	The number of equipment
	The number of evaluation indices
	The number of process paths
	The number of MCs
	The number of highly flexible numerically controlled MCs
	Minimum equipment flexibility weight of highly flexible numerically controlled MC
	Equipment weight
	The value of the t-th evaluation item of equipment
	The s-th evaluation index of the t-th evaluation item of equipment
	The weight of the s-th index about the t-th evaluation item of equipment
	The weight of the t-th evaluation item of equipment
	Production quantity of product i
	Fuzzy demand quantity of product i
	Total number of highly flexible numerically controlled equipment
	The width of equipment
	The length of equipment
	The width of MC
	The length of MC
	The width of layout area
	The length of layout area
	The shortest distance between adjacent MCs
	The shortest distance between adjacent equipment in a MC