tfdata

Access transfer function model data.

📝 Syntax

• [numerator, denominator] = tfdata(sys)

• [numerator, denominator, Ts] = tfdata(sys)

• sys = tf(numerator, denominator)

• sys = tf(numerator, denominator, Ts)

📥 Input argument

• sys - a LTI model.

📤 Output argument

• numerator - polynomial coefficients: a row vector or as a cell array of row vectors.

• denominator - polynomial coefficients: a row vector or as a cell array of row vectors.

• Ts - Sampling time Ts, default: in seconds

📄 Description

The function tfdata(sys) retrieves the matrix data numerator, denominator from the transfer function model (LTI array) represented by sys.

If sys is initially in the form of a state-space model (LTI array), it is automatically converted to the transfer function representation before extracting the matrix data.

💡 Example

numerator = 10;
denominator = [20, 33, 44];
sys = tf(numerator, denominator)
[num, den] = tfdata(sys)

🔗 See also

tf.

🕔 History

Version	📄 Description
1.0.0	initial version