Genetic Programming Method for Satellite System Topology and Parameter Optimization

Table 3

Bounds, initial value, and optimization results of system-level design variable.

Subsystem	Parameter name	Symbol	Ranges	Initial	Result	Relative changes (%)
ADCS	Orbital altitude/km		[600, 1000]	979.3	736.1	-24.83
	Orbit inclination/°		[95, 105]	104.8	100.4	-4.20
Power	Local time of descending node/h		[8, 12]	9.167	10	9.09
	Life/a		[3, 10]	7.383	6.614	-10.42
Structure	Total mass of satellite/kg		[500, 2000]	2000	726.2	-63.69
	Envelope diameter/m		[0.4, 4]	2	1.414	-29.30
	Shell thickness/m		[0.005, 0.5]	0.02	0.01	-50.00
	Envelope height/m		[0.5, 6]	1.414	1	-29.28
	Material type		{1, 2, 3, 4}	1	2	\
	Safety factor		[1, 1.1]	1.01	1.078	6.73
	Bearing cylinder diameter/m		[0.1, 2]	0.2518	0.2367	-6.00