Data-driven balancing of linear dynamical systems

IV Gosea, S Gugercin, C Beattie - SIAM Journal on Scientific Computing, 2022 - SIAM
We present a novel reformulation of balanced truncation, a classical model reduction
method. The principal innovation that we introduce comes through the use of system …

Systematic complexity reduction of wave-to-wire models for wave energy system design

M Penalba, JV Ringwood - Ocean Engineering, 2020 - Elsevier
Wave-to-wire models are valuable tools for a variety of applications in the development of
successful wave energy converters. However, computational requirements of these wave-to …

Sampling and resolution characteristics in reduced order models of shallow water equations: Intrusive vs nonintrusive

SE Ahmed, O San, DA Bistrian… - International Journal for …, 2020 - Wiley Online Library
We investigate the sensitivity of reduced order models (ROMs) to training data spatial
resolution as well as sampling rate. In particular, we consider proper orthogonal …

Reduced order modeling of fluid flows: Machine learning, Kolmogorov barrier, closure modeling, and partitioning

SE Ahmed, S Pawar, O San, A Rasheed - AIAA Aviation 2020 Forum, 2020 - arc.aiaa.org
In this paper, we put forth a long short-term memory (LSTM) nudging framework for the
enhancement of reduced order models (ROMs) of fluid flows utilizing noisy measurements …

Model order reduction by balanced proper orthogonal decomposition and by rational interpolation

MR Opmeer - IEEE Transactions on Automatic Control, 2011 - ieeexplore.ieee.org
We show that model order reduction by rational interpolation (also known as moment
matching or rational Krylov) can be seen as the special case of balanced Proper Orthogonal …

Approximate low rank solutions of Lyapunov equations via proper orthogonal decomposition

JR Singler - 2008 American Control Conference, 2008 - ieeexplore.ieee.org
We present an algorithm to approximate the solution Z of a stable Lyapunov equation AZ+
ZA*+ BB*= 0 using proper orthogonal decomposition (POD). This algorithm is applicable to …

Convergent snapshot algorithms for infinite-dimensional Lyapunov equations

JR Singler - IMA journal of numerical analysis, 2011 - academic.oup.com
We consider two algorithms to approximate the solution Z of a class of stable operator
Lyapunov equations of the form AZ+ ZA*+ BB*= 0. The algorithms utilize time snapshots of …

Balanced POD for model reduction of linear PDE systems: convergence theory

JR Singler - Numerische Mathematik, 2012 - Springer
We consider convergence analysis for a model reduction algorithm for a class of linear
infinite dimensional systems. The algorithm computes an approximate balanced truncation …

Generalizations of data-driven balancing: what to sample for different balancing-based reduced models

S Reiter, IV Gosea, S Gugercin - arXiv preprint arXiv:2312.12561, 2023 - arxiv.org
The Quadrature-based Balanced Truncation (QuadBT) framework of arXiv: 2104.01006 is a"
non-intrusive" reformulation of balanced truncation; a classical projection-based model …

[图书][B] Design, validation and application of wave-to-wire models for heaving point absorber wave energy converters

M Penalba - 2018 - search.proquest.com
Design, Validation and Application of Wave-To-Wire Models for Heaving Point Absorber
Wave Energy Converters Abstract Ocean waves represent an untapped source of …