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本文从频谱分析的概念出发,对电路瞬态过程数值解中常用的友模法之元件模型进行了误差分析,并在此基础上推导了修正计算的方法以减小模型的误差。修正的算法对常用的正弦激励电路可以完全消除固有误差,对于任意激励的电路则可求出误差最小的修正算法。修正算法对于减小瞬态过程的计算误差也具有显著的效果。 文中用实际算例对分析结论进行了验证。
Based on the concept of spectrum analysis, this paper analyzes the error of component model of friendly module commonly used in numerical solution of circuit transient process. Based on this, the method of correcting calculation is deduced to reduce the error of the model. The modified algorithm can completely eliminate the inherent error for the common sinusoidal excitation circuit, and the least error correction algorithm can be obtained for any excitation circuit. The correction algorithm also has a significant effect on reducing the calculation error of the transient process. In the paper, the actual example is used to verify the conclusion of the analysis.