Research Article

Identification of a Duffing Oscillator under Different Types of Excitation

Figure 2

Effect of noise corruption for Case 1-up. The r.m.s. of the entire time history is 0.0088 m. (a) Zoom just before the jump-down (large amplitudes). (b) Zoom after the jump (small amplitudes).
695025.fig.002a
(a)
695025.fig.002b
(b)