Search Results for author: Rodrigo A. González

Found 12 papers, 0 papers with code

Grey-box Recursive Parameter Identification of a Nonlinear Dynamic Model for Mineral Flotation

no code implementations7 May 2024 Rodrigo A. González, Paulina Quintanilla

This study presents a grey-box recursive identification technique to estimate key parameters in a mineral flotation process across two scenarios.

Statistical Analysis of Block Coordinate Descent Algorithms for Linear Continuous-time System Identification

no code implementations13 Apr 2024 Rodrigo A. González, Koen Classens, Cristian R. Rojas, James S. Welsh, Tom Oomen

Block coordinate descent is an optimization technique that is used for estimating multi-input single-output (MISO) continuous-time models, as well as single-input single output (SISO) models in additive form.

Consistency analysis of refined instrumental variable methods for continuous-time system identification in closed-loop

no code implementations13 Apr 2024 Rodrigo A. González, Siqi Pan, Cristian R. Rojas, James S. Welsh

In this paper, we address the consistency of the simplified refined instrumental variable method for continuous-time systems (SRIVC) and its closed-loop variant CLSRIVC when they are applied on data that is generated from a feedback loop.

Identification of Additive Continuous-time Systems in Open and Closed-loop

no code implementations2 Jan 2024 Rodrigo A. González, Koen Classens, Cristian R. Rojas, James S. Welsh, Tom Oomen

When identifying electrical, mechanical, or biological systems, parametric continuous-time identification methods can lead to interpretable and parsimonious models when the model structure aligns with the physical properties of the system.

Additive models

On the Relation between Discrete and Continuous-time Refined Instrumental Variable Methods

no code implementations31 May 2023 Rodrigo A. González, Cristian R. Rojas, Siqi Pan, James S. Welsh

The Refined Instrumental Variable method for discrete-time systems (RIV) and its variant for continuous-time systems (RIVC) are popular methods for the identification of linear systems in open-loop.

Relation

Parsimonious Identification of Continuous-Time Systems: A Block-Coordinate Descent Approach

no code implementations6 Apr 2023 Rodrigo A. González, Cristian R. Rojas, Siqi Pan, James S. Welsh

The identification of electrical, mechanical, and biological systems using data can benefit greatly from prior knowledge extracted from physical modeling.

An EM Algorithm for Lebesgue-sampled State-space Continuous-time System Identification

no code implementations6 Apr 2023 Rodrigo A. González, Angel L. Cedeño, María Coronel, Juan C. Agüero, Cristian R. Rojas

This paper concerns the identification of continuous-time systems in state-space form that are subject to Lebesgue sampling.

Identifying Lebesgue-sampled Continuous-time Impulse Response Models: A Kernel-based Approach

no code implementations6 Apr 2023 Rodrigo A. González, Koen Tiels, Tom Oomen

Control applications are increasingly sampled non-equidistantly in time, including in motion control, networked control, resource-aware control, and event-triggered control.

Kernel-based identification using Lebesgue-sampled data

no code implementations10 Mar 2023 Rodrigo A. González, Koen Tiels, Tom Oomen

Sampling in control applications is increasingly done non-equidistantly in time.

Non-causal regularized least-squares for continuous-time system identification with band-limited input excitations

no code implementations19 Mar 2021 Rodrigo A. González, Cristian R. Rojas, Håkan Hjalmarsson

In continuous-time system identification, the intersample behavior of the input signal is known to play a crucial role in the performance of estimation methods.

A Finite-Sample Deviation Bound for Stable Autoregressive Processes

no code implementations L4DC 2020 Rodrigo A. González, Cristian R. Rojas

In this paper, we study non-asymptotic deviation bounds of the least squares estimator in Gaussian AR($n$) processes.

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