Results 21 to 30 of about 1,828,697 (335)

Nonlinear-Adaptive Mathematical System Identification

open access: yesComputation, 2017
By reversing paradigms that normally utilize mathematical models as the basis for nonlinear adaptive controllers, this article describes using the controller to serve as a novel computational approach for mathematical system identification.
Timothy Sands
doaj   +1 more source

Neuro-Fuzzy Network-Based Reduced-Order Modeling of Transonic Aileron Buzz

open access: yesAerospace, 2020
In the present work, a reduced-order modeling (ROM) framework based on a recurrent neuro-fuzzy model (NFM) that is serial connected with a multilayer perceptron (MLP) neural network is applied for the computation of transonic aileron buzz.
Rebecca Zahn, Christian Breitsamter
doaj   +1 more source

Exploiting structure in piecewise affine identification of LFT systems [PDF]

open access: yes, 2009
Identification of interconnected systems is a challenging problem in which it is crucial to exploit the available knowledge about the interconnection structure.
Date, P   +3 more
core   +1 more source

Approximate Reachability for Koopman Systems Using Mixed Monotonicity

open access: yesIEEE Access, 2022
We present a data-driven method for computing reachable sets for unknown nonlinear dynamical systems using a Koopman operator based approach. We find mixed-monotone decompositions for a class of Koopman lifted dynamics.
Omanshu Thapliyal, Inseok Hwang
doaj   +1 more source

Linear identification of nonlinear systems: A lifting technique based on the Koopman operator [PDF]

open access: yes, 2016
We exploit the key idea that nonlinear system identification is equivalent to linear identification of the socalled Koopman operator. Instead of considering nonlinear system identification in the state space, we obtain a novel linear identification ...
Goncalves, Jorge, Mauroy, Alexandre
core   +2 more sources

Parametric Identification of Nonlinear Fractional Hammerstein Models

open access: yesFractal and Fractional, 2019
In this paper, a system identification method for continuous fractional-order Hammerstein models is proposed. A block structured nonlinear system constituting a static nonlinear block followed by a fractional-order linear dynamic system is considered ...
Vineet Prasad   +2 more
doaj   +1 more source

Integrated Pre-Processing for Bayesian Nonlinear System Identification with Gaussian Processes [PDF]

open access: yes, 2013
We introduce GP-FNARX: a new model for nonlinear system identification based on a nonlinear autoregressive exogenous model (NARX) with filtered regressors (F) where the nonlinear regression problem is tackled using sparse Gaussian processes (GP).
Frigola, Roger, Rasmussen, Carl Edward
core   +1 more source

Identification of nonlinear model for rotary high aspect ratio flexible blade using free vibration response

open access: yesAlexandria Engineering Journal, 2020
Nonlinear identification of a narrow cantilever blade undergoing free vibration was studied. In the absence of forced excitation and because of general data deficiency of this system, the current identification methods cannot be applied with sufficient ...
Ibrahim Mahariq   +4 more
doaj   +1 more source

Sequential Monte Carlo Methods for System Identification [PDF]

open access: yes, 2015
One of the key challenges in identifying nonlinear and possibly non-Gaussian state space models (SSMs) is the intractability of estimating the system state.
Dahlin, Johan   +6 more
core   +2 more sources

Benchmarking Optimisation Methods for Model Selection and Parameter Estimation of Nonlinear Systems

open access: yesVibration, 2021
Characterisation and quantification of nonlinearities in the engineering structures include selecting and fitting a good mathematical model to a set of experimental vibration data with significant nonlinear features.
Sina Safari, Julián Londoño Monsalve
doaj   +1 more source

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