Application of Stewart Platform in the Low-Frequency Vibration Characteristic Test of Space Truss Deployable Antenna on Satellite

Table 2

Test result of each measuring point in -direction.

Measuring point	-direction		Time (s)		Initial frequency (Hz)	Fundamental frequency (Hz)
	Amplitude (με)		Initial time	First peak time
S1	-50	42.9	12.6	91	0.4	4.02
S2	-79.8	29.7		92.7
S3	-104.1	54.6		74.8
S4	-89	51		82
S5	-82.3	86		80.3
S6	-276	40		90
S7	-134	87		86
S8	-75	137		100
S9	-22	41		91.9
S10	-157	344		85
S11	-27	85		91.9
S12	-29	46		92.6
Dynamic displacement			: -8.2 ~ 8.75 mm; : -4.1 ~ 4.3 mm; : -61.8 ~ 64.3 mm