hi how to solve below eqation in matlab command window in tf command

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how to put this below equation in command windows. here s2 means s to the power 2
H(S)=((s2 * Kd )+ (S * Kp) + Ki)/ s2(1+Kp) +s(1 +kp) +Ki
i want to pass numratoe to num and denominator to den varible
finally a=tf(num,den)

Accepted Answer

David K.
David K. on 12 Sep 2019
The tf function expects the num and den to be matrices that hold the coefficients to the numerator and denominator. In your case it would look like this:
num = [Kd , Kp , Ki];
den = [(1+Kp) , (1+kp) , Ki];
a = tf(num,den)

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