Vibration Analysis of a Piecewise-Smooth System with Negative Stiffness under Delayed Feedback Control

Figure 5

Comparison between the amplitude-frequency responses of controlled and uncontrolled systems: ; ; . Solid lines: the responses of controlled system; dash lines: the responses of uncontrolled system; shaded regions: unstable regions. (a) ; (b) ; (c) ; (d) ; (e) ; (f) ; (g) ; (h) .

(a)

(b)

(c)

(d)

(e)

(f)

(g)

(h)