【 MATLAB 】residuez 函数介绍（Z变换部分分数扩展）

residuez

Z-transform partial-fraction expansion

Syntax

[r,p,k] = residuez(b,a)
[b,a] = residuez(r,p,k) 

Description

residuez converts a discrete time system, expressed as the ratio of two polynomials, to partial fraction expansion, or residue, form. It also converts the partial fraction expansion back to the original polynomial coefficients.

residualz将离散时间系统（表示为两个多项式的比率）转换为部分分数扩展或留数形式。 它还将部分分数展开转换回原始多项式系数。

[r,p,k] = residuez(b,a) finds the residues, poles, and direct terms of a partial fraction expansion of the ratio of two polynomials, b(z) and a(z). Vectors b and a specify the coefficients of the polynomials of the discrete-time system b(z)/<