An Enhanced Analytical Target Cascading and Kriging Model Combined Approach for Multidisciplinary Design Optimization

Table 3

Design variables for speed reducer.

Variables		Range	Units
	Gear face width		cm
	Teeth module		cm
	Number of teeth of pinion (integer variable)		/
	Distance between bearings 1		cm
	Distance between bearings 2		cm
	Diameter of shaft 1		cm
	Diameter of shaft 1		cm

, , and are the design variables of the gear subproblem. and are the design variables of the shaft subproblem. and are linking variables (coupling variables).