本文介绍零相移滤波器的工作原理及实现方法。
This paper introduce the principle and design of an zero-phase filter.
文中用逼近法和双线性变换法,设计了用于圆度测量的高斯数字逼近滤波器,并给出了零相移的递归滤波算法,计算量小,计算效率高,易于实现。
A series of Gaussian digital approximation filters used in roundness measurement were designed on the basis of approximation method and bilinear transformation.
该方法将控制器的设计转化为零相移低通数字滤波器的设计问题,借助于数字信号处理的理论和工具直接得到所需的控制器参数。
A repetitive controller can be obtained by designing a zero phase shift low pass filter. With the help of digital signal processing and software tools, it is easy to design a satisfactory controller.
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