Encapsulation Based Method for Natural Frequency Identification of Deployable Solar Arrays with Multiple Plates

Table 4

Natural frequencies of the threefold solar array in the horizontal direction.

Rope length L (m)	Suspension stiffness kx (N·mm^−1)	First-order natural frequency in the horizontal direction
		Test value (Hz)	Relative error of test (%)	Corrected value of mathematical model (Hz)	Corrected relative error (%)
1	0.097	1.0 198	6.72	0.9 580	0.25
2	0.094	0.9 769	2.23	0.9 571	0.16
3	0.091	0.9 589	0.35	0.9 561	0.05
4	0.088	0.9 488	−0.71	0.9 551	−0.05
5	0.086	0.9 423	−1.39	0.9 542	−0.15
10	0.075	0.9 276	−2.93	0.9 514	−0.44