Results 111 to 120 of about 17,803,127 (308)

Controllability of nonlinear stochastic neutral fractional dynamical systems [PDF]

, 2017
In this paper, we obtain an equivalent nonlinear integral equation to the stochastic neutral fractional system with bounded operator. Using the integral equation, the sufficient conditions for ensuring the complete controllability of the stochastic ...
Trujillo, Juan J. J., Rajendran, Mabel Lizzy Lizzy, Balachandran, Krishnan   +2 more
core   +1 more source

An analytical adaptive optimal control approach without solving HJB equation for nonlinear systems with input constraints

IET Control Theory & Applications
This paper presents an analytical method to solve the optimal control problem for affine nonlinear systems with unknown drift dynamics. A new non‐quadratic cost function over an infinite horizon is presented that considers input constraints and includes ...
Zahra Tavanaei Sereshki, Heidar Ali Talebi, Farzaneh Abdollahi   +2 more
doaj   +1 more source

Architecture‐Driven Sensor Stability in Weft‐Knitted Engineering Textiles

Advanced Engineering Materials, EarlyView.
Textile‐integrated sensor architectures are systematically compared to evaluate their electromechanical behavior under combined mechanical and environmental loading. Pocket‐based integration exhibits stable and reproducible signals, whereas tunnel‐based routing shows higher sensitivity accompanied by increased variability.
Adnan Maroof Khan, Johannes Wendler, Dilbar Aibibu, Johannes Mersch, Michael Wöltje, Chokri Cherif   +5 more
wiley   +1 more source

Risk‐averse perimeter control for alleviating the congestion of an urban traffic network system with uncertainties

IET Intelligent Transport Systems
The perimeter control method is an effective way to alleviate traffic congestion that is based on Macroscopic Fundamental Diagrams (MFDs). However, the strategy may lead to congestion when it ignores the uncertainty of MFDs. To address this problem, this
Yuntao Shi, Ying Zhang, Xiang Yin, Weichuan Liu, Tingshen Cheng   +4 more
doaj   +1 more source

Adaptive Foam 3D Printing of Ultralight and Multifunctional Materials

Advanced Engineering Materials, EarlyView.
Adaptive foam 3D printing, enabled by expandable microspheres, imparts cellular structures to thermoplastic and thermosetting polymers, manufactured through a variety of processes including fused filament fabrication, direct ink writing, digital light processing, and inkjet printing.
Nariman Rajabifar, Amir Ameli
wiley   +1 more source

An adaptive approximation‐free control for leader‐follower tracking of multi‐agent systems with unknown nonlinearity and disturbance

IET Control Theory & Applications
Due to variable and complex work environments, nonlinearities, uncertainty and disturbances are inevitable in multi‐agent systems. Approximation‐free control can address these issues without involving approximators, such as fuzzy logic systems and neural
Xiaoyan Hu, Prathyush P Menon, Christopher Edwards, Guilin Wen, Hanfeng Yin   +4 more
doaj   +1 more source

Discrepancies Between Micro Versus Macroscale Viscoelastic Properties in a Microplastic‐Tissue Composite Model

Advanced Engineering Materials, EarlyView.
This study explores the discrepancies between bulk mechanics and spatial mapping in a tissue‐mimetic hydrogel model. Microplastic particles create localized stiff mechanical microenvironments that are detectable by cellular‐scale nanoindentation but leave bulk properties unchanged as measured by rheology.
Ahron T. Verschleisser, Baptiste Le Roi, Omri Leshem, Joshua M. Grolman   +3 more
wiley   +1 more source

Nonlinear Optimal Control for Stochastic Dynamical Systems

Mathematics
This paper presents a comprehensive framework addressing optimal nonlinear analysis and feedback control synthesis for nonlinear stochastic dynamical systems.
Manuel Lanchares, Wassim M. Haddad
doaj   +1 more source

On the controllability of a nonlinear control system

Computers & Mathematics with Applications, 1984
Nonlinear, time-invariant, finite-dimensional control systems are considered. Sufficient conditions for local controllability and global complete controllability are formulated. In the special case of a linear, finite-dimensional, time-invariant control systems these conditions are also necessary.
openaire   +2 more sources

Controlling Grain Growth in Powder Bed Fusion of Yttria‐Stabilized Zirconia Using Femtosecond Lasers: Challenges and Methodological Insights

Advanced Engineering Materials, EarlyView.
Binder‐free laser powder bed fusion of 8YSZ with a femtosecond laser is used to map process windows linking scan strategy, heat accumulation, and grain growth. Time‐resolved thermography and simulations reveal thermal regimes that enable continuous, vitrified, and fine‐grained 8YSZ surface layers without absorptive additives and demonstrate ...
Markus Kühn, Sarah Kaden, Andrea Barz, Daniel Störzner, Jens Bliedtner, Andrés Fabián Lasagni   +5 more
wiley   +1 more source