Second Order Model Reduction Based on Diagonal Blocks of Gramians
In this paper, some new algorithms based on diagonal blocks of reachability and observability Gramians are presented for structure preserving model order reduction on second order linear dynamical systems. They are more suitable for large scale systems compared to existing Gramian based algorithms, namely second order balanced truncation methods. In experiments, they have similar performance as the existing techniques.
C. Teng "Second Order Model Reduction Based on Diagonal Blocks of Gramians", Advanced Materials Research, Vols. 317-319, pp. 2359-2366, 2011