摘要
本文将遗传算法引入FIR的窗函数设计中 ,提出了窗函数可以由一系列离散的介于 0～ 1的权值来取代的思路。根据预期频率特性的指标要求 ,我们建立了窗权值的优化模型 ,并通过遗传算法来求解 ,所得的优化解将使对应FIR滤波器的频率特性较好地满足预期频率特性的要求。本设计方法简单 ,工作量小 ,具有高的灵活性和鲁棒性 ,数值实验表明了本方法的有效性。
In this paper,we introduce genetic algorithm into the design of window function for FIR digital filters,and put forward the idea that the window function can be replaced by the discrete weight valuse among 0～1.Based on the frequency response criterion of the target FIR filter,we set up the model for window weight optimization and obtain the solutions by genetic algorithm.The solution will give the corresponding FIR filter a frequency response well fitted to the target filter.The method is simple and less time-wasted with high flexibility and robustness.Numerical experiment proves the efficiency of this method.
出处
《自动化与仪器仪表》
2001年第3期13-16,共4页
Automation & Instrumentation
