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

Table 5

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

Suspension stiffness ky (N·mm^−1)	First-order natural frequency in the vertical direction
	Test value (Hz)	Relative error of test (%)	Corrected value of mathematical model (Hz)	Corrected relative error (%)
0.0 100	5.6 059	−4.51	5.8 237	−0.80
0.0 968	5.6 861	−3.14	5.8 371	−0.57
0.1 874	5.7 660	−1.78	5.8 486	−0.38
0.2 726	5.8 380	−0.56	5.8 570	−0.23
0.3 527	5.9 027	0.55	5.8 624	−0.14
0.4 282	5.9 606	1.53	5.8 648	−0.10