On-Board Computing for Structural Health Monitoring with Smart Wireless Sensors by Modal Identification Using Hilbert-Huang Transform

Table 3

Modal frequencies obtained from on-board and offline computing in numerical example.

Mode	Frequency of on-board result	Frequency of offline result	Error
First order	1.91 Hz	1.98 Hz	3.60%
Second order	3.82 Hz	3.76 Hz	1.50%