With the Fast Fourier Transform (FFT) algorithm in software design, capacitors being switched on or off are controlled by compound criterion.

在软件设计中，以快速傅立叶变换算法(FFT)为基础，采用复合控制方法控制电容器的投切。

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Because of the complexity and high order nonlinear property of the criterion, a derivative method for compound function is used to get reliability.

由于准则方程的高次非线性和复杂性，文中利用复合函数求导法则，直接针对基本随机变量求解。

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