Results 91 to 100 of about 247,675 (266)
International Journal of Adaptive Control and Signal Processing, EarlyView.This paper proposes two projector‐based Hopfield neural network (HNN) estimators for online, constrained parameter estimation under time‐varying data, additive disturbances, and slowly drifting physical parameters. The first is a constraint‐aware HNN that enforces linear equalities and inequalities (via slack neurons) and continuously tracks the ...
Miguel Pedro Silva
wiley +1 more source
Non-autonomous approximations governed by the fractional powers of damped wave operators
Electronic Journal of Differential Equations, 2019 In this article we study non-autonomous approximations governed by the fractional powers of damped wave operators of order $\alpha \in (0,1)$ subject to Dirichlet boundary conditions in an $n$-dimensional bounded domain with smooth boundary.
Marcelo J. D. Nascimento +1 more
doaj
Rates of Convergence for Conditional Expectations
The Annals of Probability, 1980 Let $\{X_n: n \geqslant 1\}$ be a sequence of i.i.d. random variables with bounded continuous density or probability mass function $f(x)$. If $E(\exp(\alpha|X_1|^\beta)) 0$ and $0 < \beta \leqslant 1, \mu = L(X_1), c_n = o(n^{1/(2 - \beta)})$ and $h$ is a measurable function such that $M = E(|h(X_1)|\exp(\alpha|X_1|^\beta)) < \infty$, then $$E(h(X_1)|
openaire +3 more sources
International Journal of Adaptive Control and Signal Processing, EarlyView.This work introduces an adaptive human pilot model that captures pilot time‐delay effects in adaptive control systems. The model enables the prediction of pilot–controller interactions, facilitating safer integration and improved design of adaptive controllers for piloted applications.
Abdullah Habboush, Yildiray Yildiz
wiley +1 more source
A Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller
International Journal of Adaptive Control and Signal Processing, EarlyView.Block Diagram of the Robust Adaptive One‐Sample‐Ahead Preview Super‐Twisting Sliding Mode Controller. ABSTRACT This article introduces a discrete‐time robust adaptive one‐sample‐ahead preview super‐twisting sliding mode controller. A stability analysis of the controller by Lyapunov criteria is developed to demonstrate its robustness in handling both ...
Guilherme Vieira Hollweg +5 more
wiley +1 more source
High order approximation theory for Banach space valued functions
Journal of Numerical Analysis and Approximation Theory, 2017 Here we study quantitatively the high degree of approximation of sequences of linear operators acting on Banach space valued di§erentiable functions to the unit operator. These operators are bounded by real positive linear companion operators.
George A. Anastassiou
doaj
Robust Switching Surfaces Sliding Mode Guidance for Terminal Rendezvous in Near Circular Orbit [PDF]
فصلنامه علوم و فناوری فضایی, 2018 The present study aims to present a safe, robust and fast orbital rendezvous guidance. The scheme improves the rate of convergence to equal point until the chaser spacecraft reaches the proximity target. Then, the robust guidance structure is transformed
seyed aliakbar kasaeian, Masoud Ebrahimi
doaj
Rate of Convergence in Bootstrap Approximations
The Annals of Probability, 1988 X\({}_ 1,X_ 2,..\). are iid random variables with zero mean and variance 1. Let C denote the collection \((X_ 1,...,X_ n)\), and let \((X_ 1^*,...,X_ n^*)\) be a collection drawn at random from C, by sampling with replacement. Define \[ \bar X=n^{- 1}\sum^{n}_{j=1}X_ j,\quad \bar X^*=n^{- 1}\sum^{n}_{j=1}X_ j^*,\quad {\hat \sigma}^ 2=n^{- 1}\sum^{n}_{j=
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Advanced Engineering Materials, EarlyView.This study investigates laser shock peening for enhancing fatigue performance of riveted aerospace aluminum joints. A comparative approach with cold expansion combines fatigue testing and synchrotron X‐ray methods. Integrating mechanical testing with residual stress and strain characterization provides insights into how different treatments affect the ...
Ogün Baris Tapar +6 more
wiley +1 more source
Advanced Engineering Materials, EarlyView.The release of foulers from protective marine coatings is determined by several interrelated material properties, including the strength of Young's modulus, the flexibility of chain segments, the surface free energy, and the magnitude of hydrodynamic stress.
Johann C. Schaal +2 more
wiley +1 more source