The Discrete Transfer Function (or Transfer Function) component defines the transfer function between the input signal $u$ and the output signal $y$.

$\frac{y\left(z\right)}{u\left(z\right)}\=\frac{b_1{z}^{n_b-1}\+b_2{z}^{n_b-2}\+\cdots \+b_{n_b}}{a_1{z}^{n_a-1}\+a_2{z}^{n_a-2}\+\cdots \+a_{n_a}}$

State variables, $x$, are defined according to controller canonical form. Initial values of the states can be set as start values of $x$.

The component described in this topic is from the Modelica Standard Library. To view the original documentation, which includes author and copyright information, click here.