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Affichage de 311 à 320 sur 2097

Article dans une revue

Equivalent-Input-Disturbance-Based Dynamic Tracking Control for Soft Robots via Reduced-Order Finite-Element Models

Shijie Li, Alexandre Kruszewski, Thierry-Marie Guerra, Tran Anh-Tu Nguyen

This article develops a systematic framework for dynamic tracking control of soft robots. To this end, we propose a new projector for the proper orthogonal decomposition algorithm to significantly reduce the large-scale robot models, obtained from finite-element methods (FEM), while preserving...

IEEE/ASME Transactions on Mechatronics, 2022, 27 (5), pp.4078-4089. ⟨10.1109/TMECH.2022.3144353⟩. ⟨hal-04278852⟩

Article dans une revue

A sufficient condition to design unknown input observers for nonlinear systems with arbitrary relative degree

Pedro Coutinho, Iury Bessa, Wen‐bo Xie, Tran Anh-Tu Nguyen, Reinaldo Martínez Palhares

Abstract This article addresses the problem of state and unknown inputs (UIs) estimation for nonlinear systems with arbitrary relative degree with respect to the UIs. For this purpose, a novel nonlinear unknown input observer (UIO) is proposed, which is able to decouple the UIs by using the...

International Journal of Robust and Nonlinear Control, 2022, 32 (15), pp.8331-8348. ⟨10.1002/rnc.6273⟩. ⟨hal-04278845⟩

Article dans une revue

Evaluation of Operational Resilience in Cyber-Physical Production Systems: literature review

Ali Attajer, Sondès Chaabane, Saber Darmoul, Yves Sallez, Fouad Riane

In Cyber-Physical Production Systems, smart production resources (e.g., augmented operators, machines, products) can collaborate according to innovative, adaptive, and autonomous ways. This context offers new methods and tools to deal with disturbances and operational risks effectively and...

IFAC-PapersOnLine, 2022, 55 (10), pp.2264-2269. ⟨10.1016/j.ifacol.2022.10.045⟩. ⟨hal-03837984⟩

Article dans une revue

Cascade Takagi–Sugeno fuzzy observer design for nonlinear uncertain systems with unknown inputs: A sliding mode approach

Cuong Nguyen, Anh‐tu Nguyen, Sebastien Delprat

This article investigates the design of Takagi–Sugeno (TS) fuzzy model-based observers for nonlinear systems with parametric uncertainties and unknown inputs. To address this challenging problem, two observers are constructed in cascade. Based on the sliding mode technique, the first observer...

International Journal of Robust and Nonlinear Control, 2022, 33 (15), pp.9066-9083. ⟨10.1002/rnc.6371⟩. ⟨hal-03930955⟩

Article dans une revue

Zonotopic observer designs for uncertain Takagi–Sugeno fuzzy systems

Masoud Pourasghar, Tran Anh-Tu Nguyen, Thierry-Marie Guerra

This paper addresses the zonotopic observer design for nonlinear systems affected by uncertainties, i.e., state disturbances and measurement noises using Takagi–Sugeno (TS) fuzzy technique. The system uncertainties are considered as unknown but bounded, which are handled via a set-membership...

Engineering Applications of Artificial Intelligence, 2022, 114, pp.105126. ⟨10.1016/j.engappai.2022.105126⟩. ⟨hal-04278847⟩

Article dans une revue

Influence of powder mixing method on properties of high entropy alloys of FeCrMnAlMo thin coatings obtained by magnetron sputtering

Y.Y. Santana, Mourtada-Aly Sow, Corinne Nouvellon, Catherine Cordier, Franck Béclin, Matthieu Touzin, A. Tromont, Xavier Noirfalise, Laurent Boilet, Jean-François Trelcat, Mirentxu Dubar, Hervé Morvan, Maxence Bigerelle

High Entropy Alloys of FeCrMnAlMo thin coatings obtained by magnetron sputtering were studied. The influence of the powder mixing method to obtain the targets used in the physical vapor deposition reactors was evaluated concerning the mechanical and tribological properties of the coatings. The...

Surface and Coatings Technology, 2022, Surface and Coatings Technology, 446, pp.128744. ⟨10.1016/j.surfcoat.2022.128744⟩. ⟨hal-03767586⟩

Article dans une revue

Time scale reachability and controllability of time‐varying linear systems

Bacem Ben Nasser, Mohamed Djemai, Michael Defoort, Taous‐meriem Laleg-Kirati

In this paper, we investigate the analysis of reachability and controllability for time-varying linear systems evolving on nonuniform time domains also known as arbitrary time scales. Based on appropriate operators, some necessary and sufficient conditions are derived to guarantee the reachability...

Asian Journal of Control, 2022, 24 (5), pp.2074-2088. ⟨10.1002/asjc.2661⟩. ⟨hal-03969319⟩

Article dans une revue

Membership Functions Integration Approach for State Feedback Control of T-S Fuzzy Systems

Wen-Bo Xie, Bo-Lin Xu, Chen Peng, Anh-Tu Nguyen

For the stability analysis problem of a T-S fuzzy system, a membership functions integration-based method is proposed to relax the existing conservatism. Firstly, indefinite integral functions are derived for the membership functions. Then with a piecewise linear approximation approach, the...

International Journal of Fuzzy Systems, 2022, 24 (6), pp.2931-2945. ⟨10.1007/s40815-022-01309-9⟩. ⟨hal-04278855⟩

Article dans une revue

Adaptive robust finite-time tracking control for quadrotor subject to disturbances

Yakoub Nettari, Moussa Labbadi, Serkan Kurt

Quadrotors are extremely agile UAVs with many unknowns regarding their moment of inertia, drag coefficients, and mass. Aside from aerodynamic turbulence, the quadrotor has a high level of nonlinearity due to its underactuated mechanical system. These last two factors cause issues that necessitate...

Advances in Space Research, 2022, 71 (1), pp.3803-3821. ⟨10.1016/j.asr.2022.09.016⟩. ⟨hal-03809801⟩

Article dans une revue

Surface Inspection and Description in Metrology and Tribology—Vol.1

Michal Wieczorowski, Maxence Bigerelle, Chris Brown, Pawel Pawlus, Rafal Reizer, Alejandro Pereira

The primary goal of this Special Issue was to present recent trends in surface inspection and description, from both metrological and tribological points of view [...]

Materials, 2022, 15 (16), pp.5636. ⟨10.3390/ma15165636⟩. ⟨hal-04489067⟩