Parameter optimization and initial value methods of PTA method for DC analysis

Recently, an efficient damped pseudo transient analysis method was proposed to find DC solutions for nonlinear circuits. However, the simulation efficiency is still not satisfactory. In this paper, for different kinds of circuits, we get some groups of PTRAN algorithm control parameters values by using a parameter optimization algorithm for pseudo-transient analysis to obtain higher efficiency during the DC analysis. Besides, an initial solution method for pseudo-transient analysis is proposed too. The simulation effectiveness is demonstrated by numerical examples.