UPCommons està en procés de migració del dia 10 fins al 14 Juliol. L’autentificació està deshabilitada per evitar canvis durant aquesta migració.
Browsing by Author "Cecilia Piñol, Andreu"
Now showing items 1-20 of 30
-
A new nonlinear observer for liquid water estimation in fuel cells
(Institute of Electrical and Electronics Engineers (IEEE), 2024-05)
Article
Restricted access - publisher's policyFuel cells are electrochemical devices with some internal variables that cannot be measured, but have to be monitored in real-time. That is the case for the liquid water inside the fuel cell catalyst layer. This motivates ... -
A proportional-integral observer protocol for secure communication
(Elsevier, 2024)
Conference report
Open AccessIn this work, we present a novel observer-based masking protocol in order to secure the communication between nodes of a cyber-physical system. The approach is based on including multiplicative disturbances generated from ... -
Addressing the relative degree restriction in nonlinear adaptive observers: A high-gain observer approach
(2022-05)
Article
Open AccessThe design of adaptive observers is a common approach for the joint state and parameter-estimation problem. Nonetheless, there are still some obstacles that have to be solved to improve the design of adaptive observers and ... -
Advances in nonlinear observer design for state and parameter estimation in energy systems
(Universitat Politècnica de Catalunya, 2022-04-19)
Doctoral thesis
Open Access(English) Critical energy challenges are forcing a rapid modification of the current energy infrastructure. lndeed, larger renewable energy penetration, more distributed generation and storage, and higher degree of autonomy ... -
Canceling output disturbances in observer design through internal model filters
(2024-04)
Article
Open AccessThis work proposes a redesign method for nonlinear observers to reduce the effect of a particular class of output disturbances. Specifically, it is considered a disturbance composed of a term generated from a known system ... -
Chaotic masking protocol for secure communication and attack detection in remote estimation of cyber-physical systems
(Elsevier, 2027)
Conference report
Open AccessIn remote estimation of cyber-physical systems, the sensor measurement transmitted through network may be attacked by adversaries, leading to leakage risk of privacy (e.g., the system state), and/or failure of the remote ... -
Control adaptatiu d'una pila PEM de càtode obert
(Universitat Politècnica de Catalunya, 2017-06-15)
Bachelor thesis
Open AccessEn aquest projecte es dissenya un observador capaç d’estimar la saturació d’aigua líquida a la capa catalítica d’una pila de combustible de tipus PEM. En els primers apartats es presenta al lector la idea de la pila de ... -
Control no lineal adaptativo con identificación dispersa
(Universidade da Coruña. Servizo de Publicacións, 2021)
Conference report
Open AccessThis work presents a controller with parameter estimation focused on non-linear, unknown and time-variant systems. The proposal consists of an on-line learning algorithm to estimate the system equations, and a controller ... -
Detection and mitigation of false data in cooperative dc microgrids with unknown constant power loads
(Institute of Electrical and Electronics Engineers (IEEE), 2021)
Article
Open AccessThe rapid development and implementation of distributed control algorithms for DC microgrids has increased the vulnerability of this type of system to false data injection attacks, being one of the most prominent types of ... -
Estimación del estado de carga y coeficientes de difusión en baterías de flujo redox
(Universidade da Coruña. Servizo de Publicacións, 2021)
Conference report
Open AccessEstimation of the state of charge and diffusion coefficients in redox flow batteries. This paper presents an observer for the estimation of the state of charge of redox flow batteries. The observer is high gain and is ... -
K-contraction analysis for discrete-time systems
(Elsevier, 2024)
Conference report
Open AccessThe definition of k-contraction promises a useful generalization of the classical notion of contraction for dynamical systems. However, most of the k-contraction literature focuses on continuous-time systems. In this work, ... -
Library-based adaptive observation through a sparsity-promoting adaptive observer
(2021)
Conference report
Open AccessThis paper proposes an adaptive observer for a class of nonlinear system with linear parametrization. The main novelty of the technique is that the regressor vector is considered to be unknown. Instead, a library of candidate ... -
LMI conditions for k-contraction analysis: a step towards design
(2024)
Conference lecture
Open AccessRecently, k-contraction has been proposed as a generalization of contraction properties for nonlinear time-variant systems. Existing tools for k-contraction analysis exploit complex mathematical tools known as matrix ... -
Modelling and estimation in lithium-ion batteries: a literature review
(2023-09-27)
Article
Open AccessLithium-ion batteries are widely recognised as the leading technology for electrochemical energy storage. Their applications in the automotive industry and integration with renewable energy grids highlight their current ... -
Nonlinear adaptive observation of the liquid water saturation in polymer electrolyte membrane fuel cells
(2021)
Article
Open AccessEfficiency, reliability and lifetime of polymer electrolyte membrane fuel cells (PEMFCs) are significantly limited by inadequate water management. High-performance water active control algorithms cannot be implemented due ... -
Nonlinear observer for online concentration estimation in vanadium flow batteries based on half-cell voltage measurements
(Elsevier, 2024-06)
Article
Open AccessThis paper presents a nonlinear observer to estimate the active species concentrations in vanadium flow batteries. To conduct the estimation, the observer relies only on current, flow rate and two half-cell voltage ... -
Observador de alta ganancia con zona muerta ajustable para estimar la saturación de agua líquida en pilas de combustible tipo PEM
(Elsevier, 2020-04-01)
Article
Open AccessIn the area of PEM fuel cells, water management remains one of the most challenging issues affecting PEMFC efficiency and lifetime. Liquid water active control and supervision techniques are limited by the absence of online ... -
Observador de alta ganancia con zona muerta para pilas de combustible PEM de cátodo abierto
(2019)
Conference report
Open AccessEn este trabajo se presenta el diseño de un observador de estado para la estimación de la saturación de agua líquida en la capa catalizadora del cátodo de una pila de combustible PEM de cátodo abierto. El observador propuesto ... -
Observer for State and Parameter Estimation in PEM Fuel Cells
(Universitat Politècnica de Catalunya, 2020-07-31)
Master thesis
Open Access -
On addressing the security and stability issues due to false data injection attacks in DC microgrids an adaptive observer approach
(Institute of Electrical and Electronics Engineers (IEEE), 2022)
Article
Open AccessThis paper proposes an observer-based methodology to detect and mitigate false data injection attacks in collaborative DC microgrids. The ability of observers to effectively detect such attacks is complicated by the presence ...
