Modal Parameters Identification Method Based on Symplectic Geometry Model Decomposition

Figure 15

Identified instantaneous frequencies under different noise levels with symplectic geometric model decomposition in the simulation study (Case 3). (a) Identified instantaneous frequency of Mode 1. (b) Identified instantaneous frequency of Mode 2. (c) Identified instantaneous frequency of Mode 3. (d) Identified instantaneous frequency of Mode 4. (e) Identified instantaneous frequency of Mode 5.

(a)

(b)

(c)

(d)

(e)