OK, kein problem
Außerdem habe ich die Frage, nach welchem schema er hier die Formeln anordnet???
\documentclass[journal]{IEEEtranGerman}
\begin{align}
Wenn~ \exists \epsilon_{1}, \epsilon_{2}, R_{1}(>0, symm.), S_{1}, U_{1}, ~s.d. \nonumber\\
\nonumber\\
\begin{pmatrix} \nonumber\\
L_{1}+h_{MATI}M_{1} & h_{MATI}N_{1}^{T} \\
* & -h_{MATI}\epsilon_{1}^{-1}R_{1} \\
\end{pmatrix} & < 0 ~und \\
\begin{pmatrix} \nonumber\\
M_{1} & h_{MATI}N_{1}^{T} & h_{MATI}S_{1} \\
* & -h_{MATI}\epsilon_{1}^{-1}R_{1} & 0 \\
* & * & -h_{MATI}\epsilon_{1}R_{1}
\end{pmatrix} & < 0 , \\
\nonumber\\
wobei~ N_{1}=f(A, R_{1}, B, U_{1}), \nonumber\\
L_{1}=f(N_{1}, \epsilon_{2}, R_{1}, S_{1}), \nonumber\\
M_{1}=f(N_{1}, \epsilon_{2}), \nonumber\\
~dann~stabilisiert~ K=U_{1}R_{1}^{-1} ~obiges~Impulsives~System, \nonumber\\
wenn~ t_{k+1}-t_{k}=h_{k}\leq h_{MATI}~\forall~k\in\mathbb{N} \nonumber.
\end{align}