Results 61 to 70 of about 36,818 (303)

Characterization of Nitinol Produced by Laser Powder Bed Fusion for Mechanical Metamaterial Applications

Advanced Engineering Materials, EarlyView.
Stabilization of L‐PBF Ni50.7Ti49.3 under low‐cycle loading was investigated. Recoverable strain after cycling was dependent on the amount of applied load. Recovery ratio was 53.4% and 35.1% at intermediate and high load, respectively. The maximum total strain reached 10.3% at a high load of 1200 MPa.
Ondřej Červinek, Jakub Hurník, Miroslav Šmíd, Ondřej Zobač, Melanie Todt, Daniel Koutný   +5 more
wiley   +1 more source

A virtual actuator approach for the secure control of networked LPV systems under pulse-width modulated DoS attacks [PDF]

, 2019
In this paper, we formulate and analyze the problem of secure control in the context of networked linear parameter varying (LPV) systems. We consider an energy-constrained, pulse-width modulated (PWM) jammer, which corrupts the control communication ...
Escobet Canal, Teresa, Puig Cayuela, Vicenç, Quevedo Casín, Joseba Jokin, Rotondo, Damiano, Sánchez, Helem Sabina   +4 more
core   +2 more sources

Additive Gaussian Process Regression for Predictive Design of High‐Performance, Printable Silicones

Advanced Engineering Materials, EarlyView.
A chemistry‐aware design framework for tuning printable polydimethylsiloxane (PDMS) for vat photopolymerization (VPP) is developed using additive Gaussian process (GP) modeling. Polymer network mechanics informs variable groupings, feasible formulation constraints, and interaction variables.
Roxana Carbonell, Martha Leach, Hongtao Song, Carolyn Seepersad   +3 more
wiley   +1 more source

Additive Manufacturing of Continuous Fibre Reinforced Composites: Process, Characterisation, Modelling, and Sustainability

Advanced Engineering Materials, EarlyView.
Additive manufacturing provides precise control over the placement of continuous fibres within polymer matrices, enabling customised mechanical performance in composite components. This article explores processing strategies, mechanical testing, and modelling approaches for additive manufactured continuous fibre‐reinforced composites.
Cherian Thomas, Amir Hosein Sakhaei
wiley   +1 more source

Actuator Fault Estimation for Vehicle Active Suspensions Based on Adaptive Observer and Genetic Algorithm

Shock and Vibration, 2019
This paper is concerned with the problem of actuator fault estimation (FE) for vehicle active suspension systems. First, the fast FE approach, which combines the output error term with its derivative term in the FE algorithm, is extended to the active ...
Pan Jin, Wenping Xue, Kangji Li
doaj   +1 more source

Research on co-design of dual security control and communication for nonlinear CPS with actuator fault and FDI attacks

Measurement + Control, 2022
In this study, a co-design method of dual security control and communication is investigated for a nonlinear cyber–physical system (CPS) with an actuator fault and false data injection (FDI) attacks.
Li Zhao, Wei Li, YaJie Li
doaj   +1 more source

Health-aware control of an octorotor UAV system based on actuator reliability [PDF]

, 2017
A major goal in modern flight control systems is the need of improving the reliability. This work presents a reliable control approach of an octorotor UAV that allows distributing the control effort among the actuators using health actuator ...
Nejjari Akhi-Elarab, Fatiha, Salazar Cortés, Jean Carlo, Sanjuan Gómez, Adrián, Sarrate Estruch, Ramon   +3 more
core   +1 more source

Comments on actuator fault accommodation [PDF]

IFAC Proceedings Volumes, 2009
The present work concerns the problem of progressive accommodation to actuator failure. An optimal nonlinear controller synthesis approach is formulated on the basis of the closed loop stability objective. The authors show the interest of the proposed method even for a local analysis when a linear approximation is used.
Raharijaona, Thibaut, Outbib, Rachid, Ouladsine, Mustapha, Sahbi, Ghachem   +3 more
openaire   +2 more sources

Tailoring Functional Properties of Ti–Ni–Cu Shape Memory Alloy Thin Films for MEMS Actuators

Advanced Engineering Materials, EarlyView.
A comprehensive study of critical parameters required to develop well‐performing Ti–Ni–Cu thin film shape memory alloy microactuators is provided. Materials science and device integration aspects are integrated by addressing structural and physical relationships using complementary characterization techniques as well as a practical fabrication solution
Elaheh Akbarnejad, Aleksander Kostka, Gowtham Arivanandhan, Yujiao Li, Alan Savan, Manfred Kohl, Alfred Ludwig   +6 more
wiley   +1 more source

Actuator and sensor fault isolation in a class of nonlinear dynamical systems

Journal of Automation and Intelligence
Fault isolation in dynamical systems is a challenging task due to modeling uncertainty and measurement noise, interactive effects of multiple faults and fault propagation.
Hamed Tirandaz, Christodoulos Keliris, Marios M. Polycarpou   +2 more
doaj   +1 more source