直流二阶电路全响应三要素法的两个实质性问题

Two Essential Problems of ThreeFactor Method for Complete Response of D.C.SecondOrder Circuit

首先论述状态变量稳态值等于初始值时二阶电路过渡过程的必要条件，然后论述状态变量的一阶导数初始值和固有频率的求法．

This article first discusses essential condition of transient of secondorder circuit when steadystate value of state variable is equal to initial value,then method of solution for firstorder derivative initial value and natural frequency of state variable is introduced.