A Study of Impedance, Frequency and Parametric Excitation of Oscillators
One dimensional and tow dimensional harmonic oscillators are described. According to B. I. Zeldovich article the definition of impedance is introduced. Exploration of small parametric oscillations of impedance and frequency is made. By numerical solution of lineal ODE systems (for 1D and 2D case) it was shown, that impedance plays the key role in the parametric resonance phenomena.