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The formulation of criteria of BIBO stability of 3rd-order IIR digital filters in space of coefficients of a denominator of transfer function

机译:传递函数分母系数空间中三阶IIR数字滤波器的BIBO稳定性准则的制定

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摘要

Criterion for the BIBO stability of the IIR digital filters is well known. IIR filter is BIBO stable if and only if all of its poles are strictly inside the unit circle in the complex z-plane. To analyze the stability of biquad filters in the space of coefficients is constructed the famous “triangle of stability”. In this paper, this criterion extends on third order IIR digital filters.
机译:IIR数字滤波器的BIBO稳定性的标准是众所周知的。如果且仅当其所有极点都严格位于复z平面的单位圆内时,IIR滤波器才是BIBO稳定的。为了分析双二阶滤波器在系数空间中的稳定性,构造了著名的“稳定性三角形”。在本文中,此标准扩展到三阶IIR数字滤波器。

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