Search Results for author: Andrea Zanelli

Found 12 papers, 5 papers with code

Predictive stability filters for nonlinear dynamical systems affected by disturbances

no code implementations20 Jan 2024 Alexandre Didier, Andrea Zanelli, Kim P. Wabersich, Melanie N. Zeilinger

Predictive safety filters provide a way of projecting potentially unsafe inputs onto the set of inputs that guarantee recursive state and input constraint satisfaction.

Model Predictive Control

A Stiffness-Oriented Model Order Reduction Method for Low-Inertia Power Systems

no code implementations16 Oct 2023 Simon Muntwiler, Ognjen Stanojev, Andrea Zanelli, Gabriela Hug, Melanie N. Zeilinger

The fast modes are then truncated in the rotated coordinate system to obtain a lower-order model with reduced stiffness.

Asynchronous Computation of Tube-based Model Predictive Control

no code implementations24 Nov 2022 Jerome Sieber, Andrea Zanelli, Antoine P. Leeman, Samir Bennani, Melanie N. Zeilinger

Tube-based model predictive control (MPC) methods bound deviations from a nominal trajectory due to uncertainties in order to ensure constraint satisfaction.

Model Predictive Control

System Level Disturbance Reachable Sets and their Application to Tube-based MPC

no code implementations5 Nov 2021 Jerome Sieber, Andrea Zanelli, Samir Bennani, Melanie N. Zeilinger

Tube-based model predictive control (MPC) methods leverage tubes to bound deviations from a nominal trajectory due to uncertainties in order to ensure constraint satisfaction.

Model Predictive Control

Convergence Analysis of Homotopy-SGD for non-convex optimization

no code implementations20 Nov 2020 Matilde Gargiani, Andrea Zanelli, Quoc Tran-Dinh, Moritz Diehl, Frank Hutter

In this work, we present a first-order stochastic algorithm based on a combination of homotopy methods and SGD, called Homotopy-Stochastic Gradient Descent (H-SGD), which finds interesting connections with some proposed heuristics in the literature, e. g. optimization by Gaussian continuation, training by diffusion, mollifying networks.

An Efficient Real-Time NMPC for Quadrotor Position Control under Communication Time-Delay

1 code implementation21 Oct 2020 Barbara Barros Carlos, Tommaso Sartor, Andrea Zanelli, Gianluca Frison, Wolfram Burgard, Moritz Diehl, Giuseppe Oriolo

The advances in computer processor technology have enabled the application of nonlinear model predictive control (NMPC) to agile systems, such as quadrotors.

Robotics Systems and Control Systems and Control Optimization and Control

On the Promise of the Stochastic Generalized Gauss-Newton Method for Training DNNs

1 code implementation3 Jun 2020 Matilde Gargiani, Andrea Zanelli, Moritz Diehl, Frank Hutter

This enables researchers to further study and improve this promising optimization technique and hopefully reconsider stochastic second-order methods as competitive optimization techniques for training DNNs; we also hope that the promise of SGN may lead to forward automatic differentiation being added to Tensorflow or Pytorch.

Second-order methods

Transferring Optimality Across Data Distributions via Homotopy Methods

no code implementations ICLR 2020 Matilde Gargiani, Andrea Zanelli, Quoc Tran Dinh, Moritz Diehl, Frank Hutter

Homotopy methods, also known as continuation methods, are a powerful mathematical tool to efficiently solve various problems in numerical analysis, including complex non-convex optimization problems where no or only little prior knowledge regarding the localization of the solutions is available.

acados: a modular open-source framework for fast embedded optimal control

1 code implementation30 Oct 2019 Robin Verschueren, Gianluca Frison, Dimitris Kouzoupis, Niels van Duijkeren, Andrea Zanelli, Branimir Novoselnik, Jonathan Frey, Thivaharan Albin, Rien Quirynen, Moritz Diehl

The acados software package is a collection of solvers for fast embedded optimization, intended for fast embedded applications.

Optimization and Control

The BLAS API of BLASFEO: optimizing performance for small matrices

1 code implementation21 Feb 2019 Gianluca Frison, Tommaso Sartor, Andrea Zanelli, Moritz Diehl

This BLAS API has lower performance than the BLASFEO API, but it nonetheless outperforms optimized BLAS and especially LAPACK libraries for matrices fitting in cache.

Mathematical Software

BLASFEO: basic linear algebra subroutines for embedded optimization

6 code implementations8 Apr 2017 Gianluca Frison, Dimitris Kouzoupis, Tommaso Sartor, Andrea Zanelli, Moritz Diehl

BLASFEO is a dense linear algebra library providing high-performance implementations of BLAS- and LAPACK-like routines for use in embedded optimization.

Mathematical Software

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