ZZ model method for initial condition analysis of dynamics networks

In order to analyze the initial condition of complicated dynamic network after switching, the author presents a zero₊ and zero ₊₊, or 0₊ and 0₊₊ (ZZ) model method. The author derives the ZZ model of dynamic elements and time-varying sources, thus making up a ZZ model circuit. It is shown that this method is superior to the conventional method for a complicated dynamic network. It is applicable whether and impulse exists or not, and whether the circuit is linear or not, singular or nonsingular, even if the excitation function only provides the initial functional value and slope. By using this method, the initial value and impulse weight of voltage and current at each point after switching can be found