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

Figure 7

Experimental HHT algorithm evaluated from on-board computing and offline computing for the first frequency case.

(a) On-board band-pass filtered signal

(b) Offline band-pass filtered signal

(c) On-board IMF

(d) Offline IMF

(e) On-board Phase-unwrapping

(f) Offline Phase-unwrapping