An Improved Shuffled Frog Leaping Algorithm for Assembly Sequence Planning of Remote Handling Maintenance in Radioactive Environment

Table 2

Execution of the 50 optimal ASP comparison results under different population sizes.

Population size	60			120			180			240
	S	D	T	S	D	T	S	D	T	S	D	T
Assembly sequence related information	20			5			20			20
	21			20			10			10
	10			10			21			5
	5			21			26			21
	26			7			27			8
	27			6			29			26
	29			9			28			6
	28			26			5			9
	23			8			19			7
	15			22			16			22
	25			24			18			25
	22			23			23			24
	24			25			15			23
	19			27			25			27
	9			28			22			28
	6			29			17			29
	8			16			14			14
	7			18			24			18
	1			14			6			19
	4			19			9			16
	3			17			7			17
	2			15			8			15
	12			12			1			11
	13			11			3			13
	11			13			2			12
	17			3			4			2
	16			1			12			4
	14			4			11			3
	18			2			13			1
Changing times of assemble direction	5			3			3			4
Changing times of assemble tool	7			6			8			6
Unstable operation times	0			2			0			0
Single execution time/s	135			256			387			515
Fitness	2.9			2.1			2.5			2.4

Note: represents the assembly sequence, represents the assembly direction, and represents the assembly tool.