The output $y$ is $\mathrm{true}$ at the time instant when the input $u$ becomes zero, provided the input $\mathrm{enable}$ is $\mathrm{true}$. At all other time instants, the output $y$ is $\mathrm{false}$. If the input $u$ is zero at a time instant when the $\mathrm{enable}$ input changes its value, then the output $y$ is $\mathrm{false}$.

The output is $\mathrm{true}$ only for an instant, so a plot of it will always appear $\mathrm{false}$.

$\mathrm{u\_pos}=\left(\mathrm{enable}\mathbf{and}0\le u\right)$

$y=\left(\mathrm{change}\left(\mathrm{u\_pos}\right)\mathbf{and}\mathbf{not}\mathrm{edge}\left(\mathrm{enable}\right)\mathbf{and}\mathbf{not}\mathrm{edge}\left(\mathrm{disable}\right)\right)$

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.