A nonlinear model of op amp based on Volterra series theory in complex frequency domain is proposed. The comparison of theory and experiment is given.

本文提出了一个运算放大器复频域非线性模型的建立方法，并且将该方法所建立的运算放大器模型与实验测量的传递函数特性作了比较。

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For more denoising, a model structure of two canal filter is analyzed in terms of the complex frequency domain (z domain), and a algorithm for denoising is developed.

用复频域(z域)分析方法分析二通道滤波器的结构模型，提出测定信噪比的算法。

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A method based on complex frequency domain analysis is presented for the simplification of the partial differential model of non compressible fluid transportation process.

通过复频域分析，从理论上提出了一种建立输送管内不可压缩流体动态传送简化模型的方法。

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