Results 111 to 120 of about 22,616,288 (249)

Prescribed Performance Ship Tracking Control With a Novel Predefined‐Time Performance Function

IET Intelligent Transport Systems
How to accurately process and achieve good transient performance in a short period of time is a key consideration factor for the system. A hyperbolic sine function is used to construct a novel predefined‐time convergent prescribed performance function ...
Han Xue, Xiangtao Wang
doaj   +1 more source

Prescribed-time cooperative formation control of unmanned surface vehicles for multi-target encirclement and tracking

Zhongguo Jianchuan Yanjiu
ObjectiveThis paper investigates the multi-objective collaborative encirclement and tracking control problem for underactuated unmanned surface vehicles (USVs) under unknown time-varying environmental disturbances. A decoupled control method for position
Xianlei LI, Haixiang XU, Wenzhao YU, Zhe DU, Chaoyi LI   +4 more
doaj   +1 more source

Proton pump inhibitors co-prescribed with warfarin reduce warfarin control as measured by time in therapeutic range

, 2019
Introduction: Warfarin is an oral anticoagulant that requires ongoing monitoring with time in therapeutic range (TTR), a common measure of the quality of warfarin control and likelihood of adverse events including bleeds.
Bertram, Victoria, Yeo, Kelly, Anoopkumar-Dukie, Shailendra, Bernaitis, Nijole   +3 more
core   +1 more source

Observer‐Based Adaptive Event‐Triggered Tracking Control for Fuzzy TS Systems With Premise Mismatch

International Journal of Adaptive Control and Signal Processing, EarlyView.
This paper presents an adaptive logistic event‐triggered observer‐based tracking controller for Takagi‐Sugeno fuzzy systems under constrained inputs and network delays. Leveraging a hybrid LMI and Secretary Bird Optimization approach, this strategy significantly minimizes communication overhead and computational burden while ensuring optimal reference ...
Oussama Djadane, Salama Makni, Mourad Kchaou, Ahmed El Hajjaji   +3 more
wiley   +1 more source

Resilient Prescribed-Time Safe Optimization for Fractional-Order Multi-Agent Systems Under False Data Injection Attacks

Fractal and Fractional
This paper studies resilient safe distributed optimization with practical prescribed-time performance for fractional-order multi-agent systems under false data injection attacks. Caputo dynamics are used to represent memory-dependent agent behavior.
Chao Lu, Chen Zhang, Yajun Xu, Pingyuan Yan, Zhihan Shi, Guangming Zhang   +5 more
doaj   +1 more source

Characterization of Defect Distribution in an Additively Manufactured AlSi10Mg as a Function of Processing Parameters and Correlations with Extreme Value Statistics

Advanced Engineering Materials, EarlyView.
Predicting extreme defects in additive manufacturing remains a key challenge limiting its structural reliability. This study proposes a statistical framework that integrates Extreme Value Theory with advanced process indicators to explore defect–process relationships and improve the estimation of critical defect sizes. The approach provides a basis for
Muhammad Muteeb Butt, Varma Kvvssn, Hossein Laieghi, Zia Uddin, Peyman Ansari, E. Kıvanç Sadak, Can Barış Toprak, Hüseyin Kızıl, Enrico Salvati   +8 more
wiley   +1 more source

Adaptive Prescribed-Time Bounded Consensus Tracking for Nonlinear Multi-Agent Systems with Actuator Faults

Mathematics
This paper addresses the prescribed-time (PT) bounded consensus tracking problem for high-order nonlinear multi-agent systems subject to actuator faults, system uncertainties, and unmatched disturbances under directed communication topologies.
Lei Zhao, Shiming Chen, Huanghuang Jin
doaj   +1 more source

A Numerical–Experimental Approach for Multi‐Matrix Fiber‐Reinforced Plastics Characterization Using Finite Element Model Updating

Advanced Engineering Materials, EarlyView.
A numerical–experimental framework is developed for characterizing multi‐matrix fiber‐reinforced polymers (MM‐FRPs) combining epoxy and polyurethane matrices. Harmonic bending tests are integrated with finite element model updating (FEMU) to simultaneously identify elastic and viscoelastic material parameters.
Rodrigo M. Dartora, Tales V. Lisbôa, Axel Spickenheuer, Rogério J. Marczak, Jakson M. Vassoler   +4 more
wiley   +1 more source

Fast Fixed-Time-Based Prescribed Performance Fault-Tolerant Control of Quadrotor UAV Systems

Drones
With the gradual development of science and technology, increasingly complex application environments impose higher requirements on the control performance of quadrotor unmanned aerial vehicles (UAVs).
Zhuang Liu, Dingmeng Chi, Jianing Tang, Yabin Gao   +3 more
doaj   +1 more source

A Simplified Laminar Flow Model for the Pultrusion of Glass Fiber/Polyethylene Terephthalate Commingled Yarns

Advanced Engineering Materials, EarlyView.
A simplified thermoplastic pultrusion model is developed to predict thermal fields in glass fiber/polyethylene terephthalate (GF/PET) composites with reduced computational cost. By combining effective material homogenization, validation against literature data, and Gaussian‐process‐based optimization, the study reveals how heating limits, pulling speed,
Elder Soares, Nadège Bouchonneau, Christian Jochum, Donald Radford   +3 more
wiley   +1 more source