Results 71 to 80 of about 473,143 (311)

Finite-Time Trajectory Tracking Control for Overhead Crane Systems Subject to Unknown Disturbances

IEEE Access, 2019
In this paper, a finite-time trajectory tracking control method for overhead crane systems with unknown disturbances is proposed. The controller is designed in the framework of observer-based control design, therefore, it works well even in the presence ...
Menghua Zhang, Yongfeng Zhang, Xingong Cheng   +2 more
doaj   +1 more source

Scheduling for finite time consensus

2009 American Control Conference, 2009
We study the problem of link scheduling for discrete-time agents to achieve average consensus in finite time under communication constraints. We provide necessary and sufficient conditions under which finite time consensus is possible. Furthermore, we prove bounds on the consensus time and exhibit provably optimal communication policies.
Chih-Kai Ko, Ling Shi 0001
openaire   +2 more sources

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

Practical analysis of 3-D dynamic nonlinear magnetic field using time-periodic finite element method [PDF]

, 1995
A practical 3-D finite element method using edge elements for analyzing stationary nonlinear magnetic fields with eddy currents in electric apparatus, in which the flux interlinking the voltage winding is given, has been proposed.
Nakata, Takayoshi, Takahashi, Norio, Zhu, Hui Ling, Fujiwara, Koji, Muramatsu, Kazuhiro, Ohashi, Hiromitsu   +5 more
core   +1 more source

Rafting of Ni‐Based Superalloys Under Multiaxial Load as Understood by Phase‐Field Simulations and Critical Experiments

Advanced Engineering Materials, EarlyView.
Phase‐field simulations coupled with dislocation‐density‐based crystal plasticity modeling reproduce γ′ rafting behavior in single‐crystal Ni‐based superalloys under varied loading conditions. The model captures both macroscopic creep and microscopic morphology evolution, with results matching high‐temperature creep experiments.
Micheal Younan, David Bürger, Gunther Eggeler, Oleg Shchyglo, Ingo Steinbach, Muhammad Adil Ali   +5 more
wiley   +1 more source

Fractional-order backstepping sliding mode control for the speed tension and screw down system of the reversible cold strip rolling mill

Systems Science & Control Engineering
This paper investigates the robust control problem of the speed tension and screw down system of Reversible Cold Strip Rolling Mill (RCSRM). A finite-time observer is proposed to observe the uncertainties of the system. Based on the finite time observer,
Yujing Guo, Zhuang Ma, Minghao Lin
doaj   +1 more source

Finite-time control method for distributed formation of ships based on finite-time observer

Zhongguo Jianchuan Yanjiu, 2020
[Objectives] In order to solve the formation control problem of multiple ships whose velocity measurements cannot be used directly and the environment disturbances are bounded,a finite-time control method for the distributed formation based on finite ...
YU Lingling, WANG Xin, LI Li, HUANG Wei, FU Mingyu   +4 more
doaj   +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

Adaptive Super-Twisting Sliding Mode Control for Robot Manipulators with Input Saturation

Sensors
The paper investigates a modified adaptive super-twisting sliding mode control (ASTSMC) for robotic manipulators with input saturation. To avoid singular perturbation while increasing the convergence rate, a modified sliding mode surface (SMS) is ...
Chenghu Jing, Hui Zhang, Yafeng Liu, Jing Zhang   +3 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source