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Method for optimizing digital filter in numerical tool machine control systems, based on selecting window function to reduce effect of using an infinite number of filter coefficients
Method for optimizing digital filter in numerical tool machine control systems, based on selecting window function to reduce effect of using an infinite number of filter coefficients
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机译：基于选择窗口函数以减少使用无限数量的滤波器系数的影响的数控机床控制系统中数字滤波器的优化方法
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摘要
In a first step at least one filter characteristic parameter is established, characterizing a desired filter frequency response for the machine concerned - e.g. the machine resonant frequency. In step (S20) an optimization criterion is determined or specified to check the quality of the FIR (Finite Impulse Filters). In step (S30) a window function is selected to reduce the effect of using an infinite number of filter coefficients. In step (S40) a window function parameter is selected which can be varied according to the desired optimization within specific limits. In step (S50) for each variation of the filter parameter, here the window function parameter, the related value of the optimizing criterion determined for checking the optimizing quality. In step (S60) the window function is selected which best provides the specified criterion. With this window function in step (S70) the filter coefficients of the FIR filter are determined.
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