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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

Author

Allan CORNET

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