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

Table 2

Natural frequencies of the twofold 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 (%)
0.5	0.098	0.9 545	29.39	0.7 341	−0.49
1.0	0.097	0.8 558	16.01	0.7 391	0.19
1.5	0.095	0.8 140	10.34	0.7 391	0.19
2.0	0.094	0.7 906	7.17	0.7 385	0.11
2.5	0.092	0.7 756	5.14	0.7 381	0.05
10	0.075	0.7 220	−2.13	0.7 309	−0.92