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Asymptotic analysis of the autoresonance capture in oscillating systems with combined excitation (1804.08372v1)

Published 23 Apr 2018 in math-ph, math.DS, and math.MP

Abstract: A mathematical model of autoresonance in nonlinear systems with combined parametric and external chirped frequency excitation is considered. Solutions with a growing amplitude and a bounded phase mismatch are associated with the autoresonant capture. By applying Lyapunov function method we investigate the conditions for the existence and stability of autoresonant modes and construct long-term asymptotics for stable solutions. In particular, we show that unstable regimes become stable when the system parameters pass through certain threshold values.

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