SciPy

scipy.signal.ss2tf

scipy.signal.ss2tf(A, B, C, D, input=0)[source]

State-space to transfer function.

Parameters:

A, B, C, D : ndarray

State-space representation of linear system.

input : int, optional

For multiple-input systems, the input to use.

Returns:

num : 2-D ndarray

Numerator(s) of the resulting transfer function(s). num has one row for each of the system’s outputs. Each row is a sequence representation of the numerator polynomial.

den : 1-D ndarray

Denominator of the resulting transfer function(s). den is a sequence representation of the denominator polynomial.

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