Sub harmonic oscillations in first order systems with delay

Nguyen Dong Anh, Nguyen Tien Khiem


The sub harmonic oscillations with frequency, which is n times smaller than that of exciting periodic force, in first order systems with delay are studied. The averaging equations for the am altitude and phase of the response are constructed. A detailed research of third order sub harmonic oscillation in the Duffing system is given.

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