Implementing factored form in MATLAB?
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I have a z transform in rational form as shown in attached photo
and i want to convert it into factored form
How can i implement it in MATLAB? I learnt from a google resource that we should use "zp2sos"command but i am not satisfied because output of "zp2sos"command does not looks like factored form
![](https://www.mathworks.com/matlabcentral/answers/uploaded_files/544842/image.png)
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Walter Roberson
2021년 3월 10일
By the way, you do not need to create an zpk intermediate form
z = tf('z');
H = (4*z^2+3*z+9)/(4*z^2+3*z-4)
H = [H, z/H] %just to give a more complicated system
HN = H.Numerator;
HD = H.Denominator;
HN = cellfun(@(C) C(find(C,1):end), HN, 'uniform', 0); %trim leading 0
HD = cellfun(@(C) C(find(C,1):end), HD, 'uniform', 0); %trim leading 0
Hsos = cellfun(@tf2sos, HN, HD, 'uniform', 0).';
celldisp(Hsos)
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