Results 31 to 40 of about 32,387,854 (357)

Fast finite difference time domain analysis of microstrip patch antennas [PDF]

open access: yes, 1991
Although the finite-difference-time-domain method has been successfully used to model microstrip-fed patch antennas, this has been achieved using uniform grids.
Daniel, EM, Railton, CJ
core   +1 more source

Event-Trigger-Based Finite-Time Fuzzy Adaptive Control for Stochastic Nonlinear System With Unmodeled Dynamics

open access: yesIEEE transactions on fuzzy systems, 2021
This article investigates the problem of finite-time fuzzy adaptive event-triggered control design for stochastic nonlinear nonstrict feedback systems with unmodeled dynamics. The fuzzy logic systems are adopted to identify the unknown nonlinearities and
Shuai Sui, C. L. P. Chen, Shaocheng Tong
semanticscholar   +1 more source

Adaptive Integral-Sliding-Mode Control for Spacecraft Single-Axis Pointing Using Two Torques

open access: yesIEEE Access, 2020
This paper deals with the attitude control problem of a nearly axis-symmetric spacecraft actuated by two torques perpendicular to its symmetry axis. As a result, the spacecraft symmetry axis is unactuated and the rotation about it is uncontrollable.
Tao Wang, Yingchun Zhang
doaj   +1 more source

Event-Triggered Adaptive Neural Network Trajectory Tracking Control For Underactuated Ships Under Uncertain Disturbance

open access: yesPolish Maritime Research, 2023
An adaptive neural network (NN) event-triggered trajectory tracking control scheme based on finite time convergence is proposed to address the problem of trajectory tracking control of underdriven surface ships.
Su Wenxue, Zhang Qiang, Liu Yufeng
doaj   +1 more source

Continuous Adaptive Finite Reaching Time Control and Second-Order Sliding modes [PDF]

open access: yes, 2013
This paper focuses on the design of adaptive finite reaching time control for first- and second-order dynamic systems with perturbation terms given in a regressive form. The uncertainties considered here are assumed to be bounded with unknown bounds. The
Spurgeon, Sarah K.   +3 more
core   +1 more source

Adaptive Fuzzy Fast Finite-Time Dynamic Surface Tracking Control for Nonlinear Systems

open access: yesIEEE Transactions on Circuits and Systems Part 1: Regular Papers, 2021
In this paper, we investigate the adaptive fast finite-time tracking control problem for a class of uncertain nonlinear strict-feedback systems by using backstepping technique and fast finite-time stable theory.
Huanqing Wang   +3 more
semanticscholar   +1 more source

Finite-time synchronization of Kuramoto-oscillator networks with a pacemaker based on cyber-physical system

open access: yesFrontiers in Physics, 2022
In this paper, we study the finite-time synchronization problem of a Kuramoto-oscillator network with a pacemaker. By constructing a cyber-physical system (CPS), the finite-time phase agreement and frequency synchronization of the network are explored ...
Pengchun Rao, Xiufeng Guo
doaj   +1 more source

Time-decoupled high order continuous space-time finite element schemes for the heat equation [PDF]

open access: yes, 2014
Copyright © by SIAMIn Comput. Methods Appl. Mech. Engrg., 190 (2001), pp. 6685—6708 Werder et al. demonstrated that time discretizations of the heat equation by a temporally discontinuous Galerkin finite element method could be decoupled by diagonalising
Kruse, C, Shaw, S
core   +1 more source

DASP Implementation of Continuous-Time, Finite-Impulse-Response Systems [PDF]

open access: yes, 2020
Digital Alias-free Signal Processing (DASP) uses random sampling to mitigate aliasing. This paper investigates the use of DASP for realization of continuous-time, linear, time-invariant systems with finite-duration impulse response.
Tarczynski, A.   +3 more
core   +1 more source

Direct experimental evidence of time-temperature superposition at finite strain for an amorphous polymer network [PDF]

open access: yes, 2015
The time-temperature superposition property of an amorphous polymer acrylate network is characterized at infinitesimal strain by standard dynamic mechanical analysis tests.
GILORMINI, Pierre   +4 more
core   +1 more source

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