Analytical and Experimental Study Using Output-Only Modal Testing for On-Orbit Satellite Appendages

Table 5

Natural frequencies of test article under point excitation.

Mode	FRF PolyMax  (Ref.)   f(Hz)	Operational   PolyMax  f(Hz)	PULSE methods
			FDD  f(Hz)	EFDD  f(Hz)	SSI
					UPC  f(Hz)	PC   (Hz)	CVA  f(Hz)
1	3.47	4.98	4.85	4.60	4.60	4.75	4.84
2	21.50	21.39	21.0	21.11	21.21	21.33	21.41
3	28.26	28.25	28.25	28.31	28.28	28.28	28.28
4	60.39	59.28	59.50	59.38	59.49	59.43	59.45
5	87.84	87.91	87.75	87.78	87.81	87.81	87.81
6	120.1	120.1	120.5	120.0	120.1	119.8	120.1