Fast and accurate method for computing non-smooth solutions to constrained control problems

Autor: Lucian Nita, Eduardo M. G. Vila, Marta A. Zagorowska, Eric C. Kerrigan, Yuanbo Nie, Ian McInerney, Paola Falugi

Publikováno v: European Control Conference

Introducing flexibility in the time-discretisation mesh can improve convergence and computational time when solving differential equations numerically, particularly when the solutions are discontinuous, as commonly found in control problems with cons

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e719af756883bd173f8fe32d09afb3e2
https://doi.org/10.23919/ecc55457.2022.9838569

Towards a Framework for Nonlinear Predictive Control using Derivative-Free Optimization

Autor: Eric C. Kerrigan, Alberto Oliveri, Lucian Nita, Ian McInerney, Yuanbo Nie

Publikováno v: Mcinerney, I, Nita, L, Nie, Y, Oliveri, A & Kerrigan, E C 2021, ' Towards a Framework for Nonlinear Predictive Control using Derivative-Free Optimization ', IFAC-PapersOnLine, vol. 54, no. 6, pp. 284-289 . https://doi.org/10.1016/j.ifacol.2021.08.558
7th IFAC Conference on Nonlinear Model Predictive Control

The use of derivative-based solvers to compute solutions to optimal control problems with non-differentiable cost or dynamics often requires reformulations or relaxations that complicate the implementation or increase computational complexity. We pre

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::dd2277662c876af7090a2b19c6db2f83
https://linkinghub.elsevier.com/retrieve/pii/S2405896321013331

Direct Transcription for Dynamic Optimization: A Tutorial with a Case Study on Dual-Patient Ventilation During the COVID-19 Pandemic

Autor: Omar J. Faqir, Jose Alonso Solis-Lemus, Peter E. Vincent, Eric C. Kerrigan, Steven A. Niederer, Steven Williams, Caroline H. Kennedy, Yuanbo Nie

Publikováno v: 59th IEEE Conference on Decision and Control 2020
CDC
2020 59th IEEE Conference on Decision and Control (CDC)

A variety of optimal control, estimation, system identification and design problems can be formulated as functional optimization problems with differential equality and inequality constraints. Since these problems are infinite-dimensional and often d

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c23a60fbe7646065ece5876a051f7e7e

Efficient Implementation of Rate Constraints for Nonlinear Optimal Control

Autor: Eric C. Kerrigan, Yuanbo Nie

We propose a general approach to directly implement rate constraints on the discretization mesh for all collocation methods, for both state and input variables. Unlike conventional approaches that may lead to singular control arcs, the solution of th

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e7b468f7d035dee6d1462dd727da8d2a

Capturing Discontinuities in Optimal Control Problems

Autor: Yuanbo Nie, Eric C. Kerrigan

Publikováno v: 2018 UKACC 12th International Conference on Control (CONTROL).

We present a method for automatically capturing discontinuous features when using hp-adaptive pseudo-spectral methods to solve an optimal control problem. The simultaneous reduction of the objective cost and the approximation error at discontinuities

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::666a11cec708a0b916abb9052bfeaa5f
https://doi.org/10.1109/control.2018.8516770