含有强迫跃变量的动态电路经典法分析

The Classic Analysis Methods of the Dynamic Circuits Containing the Forced Instantaneousl Variables

介绍含有强迫跃变量的动态电路的经典法分析。对于在非冲激激励下、换路瞬间u_C或i_L发生跃变的动态电路,根据电荷守恒或磁通链守恒的原理,可方便求出u_C(0_+)或i_L(0_+)；文中推导出用以求解含有冲激量的i_C(t)或u_L(t)的简便公式,以具体电路为例,通过与拉普拉斯变换法求出的结果进行比较,验证了本文提出的方法及所推公式的正确性和有效性。

The paper introduces the classic analysis methods of the dynamic circuits containing the forced instantaneous variables. When the drives of circuits are not impulse functions δ （ t ）, and uc （ t ） or iL （ t ） of the circuits is forced to change instantaneously, uc（0＋ ） or iL（0＋ ） can be got easily according to the principle about conservation of charge or flux linkage. The handy formulas derived in this paper to find ic （t） or UL （ t ） which contains the impulse, can be used. For example, a circuit is solved with the method and the handy formulas, compared with the result obtained from Laplacian method so as to verify the correction and effi- ciency of the formulas.