with \(\) \(l:=\ \frac{t}{\Delta t}\) and where \(i\left(k\right)\ =\ \left(k-1\right)n\) if \(\Delta t\ =\ n\ \delta t\) and \(t_{in}\left(k\right)=i\left(k\right)\ \delta t\). It can be verified that \(Q\left(t\right)\ =\ 0\ \) for \(t\ \ge t_c\). The discrete representation of the above equation is derived then as: