Design Optimization of a Speed Reducer Using Deterministic Techniques

Table 2

Experiment results of the speed reducer problem by the proposed method with range reduction.

Iteration	Variable bound	Reported solution (𝑥1,𝑥2,𝑥3,𝑥4,𝑥5,𝑥6,𝑥7)	Accumulated CPU time (mm:ss)	Objective value	Error in constraint
1	[2.6,3.6]; [0.7,0.8]; [17,28]; [7.3,8.3]; [7.3,8.3]; [2.9,3.9]; [5,5.5]	(3.5, 0.7, 17.0, 7.3, 7.715291, 3.350039, 5.286628)	00:10	2994.408856	0.000157319
2	[3.5,3.500182]; [0.7,0.700011]; [17,17.000419]; [7.3,7.307746]; [7.715291,7.718508]; [3.350039,3.350290]; [5.286628,5.286654]	(3.5, 0.7, 17.0, 7.3, 7.7153190, 3.350282, 5.286654)	07:56	2994.471921	0.000000264