Modal Parameters Identification Method Based on Symplectic Geometry Model Decomposition

<div>Identified instantaneous frequencies on the basis of empirical model decomposition in the simulation study (Case 3). (a) Identified instantaneous frequency from IMF 5. (b) Identified instantaneous frequency from IMF 4. (c) Identified instantaneous frequency from IMF 1–3.</div>

Shock and Vibration

fig14

Figure 14

Figure 14: Modal Parameters Identification Method Based on Symplectic Geometry Model Decomposition 