Search Results for author: Mohamed Abdalmoaty

Found 9 papers, 0 papers with code

Finite Sample Frequency Domain Identification

no code implementations1 Apr 2024 Anastasios Tsiamis, Mohamed Abdalmoaty, Roy S. Smith, John Lygeros

The error rate is of the order of $\mathcal{O}((d_{\mathrm{u}}+\sqrt{d_{\mathrm{u}}d_{\mathrm{y}}})\sqrt{M/N_{\mathrm{tot}}})$, where $N_{\mathrm{tot}}$ is the total number of samples, $M$ is the number of desired frequencies, and $d_{\mathrm{u}},\, d_{\mathrm{y}}$ are the dimensions of the input and output signals respectively.

valid

Small Noise Analysis of Non-Parametric Closed-Loop Identification

no code implementations23 Mar 2024 Mohamed Abdalmoaty, Roy S. Smith

We revisit the problem of non-parametric closed-loop identification in frequency domain; we give a brief survey of the literature and provide a small noise analysis of the direct, indirect, and joint input-output methods when two independent experiments with identical excitation are used.

Optimal Data-Driven Prediction and Predictive Control using Signal Matrix Models

no code implementations22 Mar 2024 Roy S. Smith, Mohamed Abdalmoaty, Mingzhou Yin

Data-driven control uses a past signal trajectory to characterise the input-output behaviour of a system.

LEMMA

Online Identification of Stochastic Continuous-Time Wiener Models Using Sampled Data

no code implementations9 Mar 2024 Mohamed Abdalmoaty, Efe C. Balta, John Lygeros, Roy S. Smith

It is well known that ignoring the presence of stochastic disturbances in the identification of stochastic Wiener models leads to asymptotically biased estimators.

Frequency-Domain Identification of Discrete-Time Systems using Sum-of-Rational Optimization

no code implementations25 Dec 2023 Mohamed Abdalmoaty, Jared Miller, Mingzhou Yin, Roy S. Smith

We propose a computationally tractable method for the identification of stable canonical discrete-time rational transfer function models, using frequency domain data.

Continuous Time-Delay Estimation From Sampled Measurements

no code implementations20 Nov 2022 Mohamed Abdalmoaty, Alexander Medvedev

An algorithm for continuous time-delay estimation from sampled output data and known input of finite energy is presented.

Privacy and Security in Network Controlled Systems via Dynamic Masking

no code implementations14 Nov 2022 Mohamed Abdalmoaty, Sribalaji C. Anand, André M. H. Teixeira

We consider an adversary which first learns the system dynamics (privacy) using system identification techniques, and then performs a data injection attack (security).

Noise reduction in Laguerre-domain discrete delay estimation

no code implementations26 Jul 2022 Mohamed Abdalmoaty, Alexander Medvedev

This paper introduces a stochastic framework for a recently proposed discrete-time delay estimation method in Laguerre-domain, i. e. with the delay block input and output signals being represented by the corresponding Laguerre series.

DeepBayes -- an estimator for parameter estimation in stochastic nonlinear dynamical models

no code implementations4 May 2022 Anubhab Ghosh, Mohamed Abdalmoaty, Saikat Chatterjee, Håkan Hjalmarsson

Yet, estimating the unknown parameters of stochastic, nonlinear dynamical models remains a challenging problem.

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