Structural System Identification with Extended Kalman Filter and Orthogonal Decomposition of Excitation

Figure 3

Identification results for nonlinear structural system.

(a) Stiffness of the 1st floor

(b) Stiffness of the 2nd floor

(c) Stiffness of the 3rd floor

(d) Damping of the 1st floor

(e) Damping of the 2nd floor

(f) Damping of the 3rd floor

(g) 𝛽 of the 1st floor

(h) 𝛽 of the 2nd floor

(i) 𝛽 of the 3rd floor

(j) 𝛾 of the 1st floor

(k) 𝛾 of the 2nd floor

(l) 𝛾 of the 3rd floor

(m) Displacement of the 3rd floor

(n) Velocity of the 3rd floor

(o) Acceleration of the 3rd floor

(p) Nonlinear displacement of the 3rd floor

(q) External force