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我有分子和連續時間傳遞函數的分母。我想單獨獲得等效離散時間傳遞函數的分子和分母。是否存在`tf()`的反函數?
我的代碼如下:
SAMPLING_PERIOD = 0.01;
% Hc(s) = Bc(s)/Ac(s) = 25/(s^2 + 3s + 25);
Bc = [25];
Ac = [1, 3, 25];
Hc = tf(Bc, Ac);
Hd = c2d(Hc, SAMPLING_PERIOD);
[Bd, Ad] = inverse_tf(Hd); % I need a function like this
% My aim is to obtain Ad and Bd; where,
% Bd: Numerator of the corresponding discrete time system
% Ad: Denominator of the corresponding discrete time system
我該怎麼辦呢?